This document contains a resume for Tomasz Najder, a senior consultant and grouting contractor. It summarizes his role on two tunneling projects in Iceland from 2007-2009. The Siglufjörður and Ólafsfjörður tunnels involved mining through basalt rock with varying water inflows. Najder's responsibilities included pre-grouting, refilling caverns, post-grouting, and stopping water under high pressure. The document provides details on the tunnel lengths, diameters, gradients, and geology encountered on each project.
CV Tomasz Najder Part 4 2009.06.07 2016Tomasz Najder
Tomasz Najder is a senior consultant based in Stockholm, Sweden. He has worked as a consultant for Norconsult SA on the Greater Istanbul Water Supply Project from 2008-2009. This involved tunnel construction using an Earth Pressure Balance TBM underneath the Bosphorus strait. The TBM tunnel was 3.3km long and constructed the first tunnel between two continents, connecting Asia and Europe under the Bosphorus channel. Najder's role involved oversight of grouting activities to stabilize the ground and prevent water inflow during tunnel construction.
CV Tomasz Najder Part 2 2009.09.17 2016Tomasz Najder
Tomasz Najder is a senior consultant and grouting engineer based in Sweden. He has over 30 years of experience in tunneling projects. Some of his roles include senior grouting engineer for the Kárahnjúkar Hydroelectric Project in Iceland and vice president of Stabilator AB in Sweden. He specializes in grouting activities like pre-grouting, curtain grouting, concrete repairs, and sealing tunnels. Tomasz Najder provides consulting services and recommendations on grout compositions, procedures, and equipment for various tunneling and dam projects internationally.
CV Tomasz Najder Part 5 2010.02.12 2016Tomasz Najder
Tomasz Najder worked as a senior consultant on an underground tunnel repair project in Dammam, Saudi Arabia from 2008-2009. The project involved inspecting and repairing cracks, joints, and leaks in the tunnel structure through grouting methods. Najder provided engineering services and developed method statements for the grouting work. He also proposed a monitoring system to track the tunnel's performance over several years after completion. The document provides details on Najder's role, the tunnel repair scope, grouting activities, and engineering drawings and photos from the site.
CV Tomasz Najder Part 6 2016.01.17 2016Tomasz Najder
This document provides biographical information about Tomasz Najder and details his professional experience as a civil engineer. It lists his personal details, employment as co-owner and managing director of Najder Engineering AB since 2014, and experience on various tunneling, foundation, and infrastructure projects between 2008-2016 in Scandinavia, Europe, the Middle East, Asia, and Africa. The projects involved tasks such as grouting, underpinning, dam and slope stabilization.
Najder Eng. CV Tomasz Najder Part 3 2009.06.07 pdf.Tomasz Najder
This document contains biographical information about Tomasz Najder and details two tunneling projects he worked on in Iceland:
1. The Siglufjörður and Ólafsfjörður Tunnels. The Siglufjörður Tunnel is 3.875 meters long and the Ólafsfjörður Tunnel is 7.150 meters long. Both tunnels required grouting activities like pre-grouting and post-grouting to seal cracks and stabilize the rock.
2. Tomasz Najder's roles and responsibilities in the projects as a senior grouting consultant and contractor's representative from April 2007 to February 2009. He performed grouting
This document discusses various 3D printing technologies including fused deposition modeling (FDM), stereolithography (SLA), photopolymer phase change inkjets, selective laser sintering (SLS), and plaster-based 3D printing. It describes the basic processes and materials used for each technology. For FDM, it explains how a filament is extruded through a heated nozzle to fuse layers together and discusses common thermoplastic materials like PLA and ABS. For SLA, it describes how a laser cures liquid resin in layers. For SLS/DMLS, it explains how a high-power laser sinters or fuses powdered materials in layers.
The document discusses appropriate areas for investment and trade in Ukraine. It analyzes Ukraine's economic sectors including agriculture, mining, industry, automotive, construction, tourism, services, retail, and overall market potential. Agriculture shows high investment potential across activities that can increase productivity and yields. The automotive sector is seen as strategic due to low existing production compared to growing demand. Tourism is also an opportunity, particularly around Kiev and in Crimea. Overall, Ukraine presents opportunities for medium and long-term partnerships and trade given its population size, income levels, and geographical location bordering Europe.
Ringkasan dokumen tersebut adalah proses bisnis unit F&B yang meliputi pengumpulan data omset konsesioner, evaluasi bulanan, pengolahan data ke dalam sistem SAP, pengelolaan sewa ruang dan konsesi, proses settlement tagihan, serta keterampilan yang dibutuhkan seperti analisis bisnis, inovasi, komunikasi intra personal, dan kepekaan terhadap perubahan.
CV Tomasz Najder Part 4 2009.06.07 2016Tomasz Najder
Tomasz Najder is a senior consultant based in Stockholm, Sweden. He has worked as a consultant for Norconsult SA on the Greater Istanbul Water Supply Project from 2008-2009. This involved tunnel construction using an Earth Pressure Balance TBM underneath the Bosphorus strait. The TBM tunnel was 3.3km long and constructed the first tunnel between two continents, connecting Asia and Europe under the Bosphorus channel. Najder's role involved oversight of grouting activities to stabilize the ground and prevent water inflow during tunnel construction.
CV Tomasz Najder Part 2 2009.09.17 2016Tomasz Najder
Tomasz Najder is a senior consultant and grouting engineer based in Sweden. He has over 30 years of experience in tunneling projects. Some of his roles include senior grouting engineer for the Kárahnjúkar Hydroelectric Project in Iceland and vice president of Stabilator AB in Sweden. He specializes in grouting activities like pre-grouting, curtain grouting, concrete repairs, and sealing tunnels. Tomasz Najder provides consulting services and recommendations on grout compositions, procedures, and equipment for various tunneling and dam projects internationally.
CV Tomasz Najder Part 5 2010.02.12 2016Tomasz Najder
Tomasz Najder worked as a senior consultant on an underground tunnel repair project in Dammam, Saudi Arabia from 2008-2009. The project involved inspecting and repairing cracks, joints, and leaks in the tunnel structure through grouting methods. Najder provided engineering services and developed method statements for the grouting work. He also proposed a monitoring system to track the tunnel's performance over several years after completion. The document provides details on Najder's role, the tunnel repair scope, grouting activities, and engineering drawings and photos from the site.
CV Tomasz Najder Part 6 2016.01.17 2016Tomasz Najder
This document provides biographical information about Tomasz Najder and details his professional experience as a civil engineer. It lists his personal details, employment as co-owner and managing director of Najder Engineering AB since 2014, and experience on various tunneling, foundation, and infrastructure projects between 2008-2016 in Scandinavia, Europe, the Middle East, Asia, and Africa. The projects involved tasks such as grouting, underpinning, dam and slope stabilization.
Najder Eng. CV Tomasz Najder Part 3 2009.06.07 pdf.Tomasz Najder
This document contains biographical information about Tomasz Najder and details two tunneling projects he worked on in Iceland:
1. The Siglufjörður and Ólafsfjörður Tunnels. The Siglufjörður Tunnel is 3.875 meters long and the Ólafsfjörður Tunnel is 7.150 meters long. Both tunnels required grouting activities like pre-grouting and post-grouting to seal cracks and stabilize the rock.
2. Tomasz Najder's roles and responsibilities in the projects as a senior grouting consultant and contractor's representative from April 2007 to February 2009. He performed grouting
This document discusses various 3D printing technologies including fused deposition modeling (FDM), stereolithography (SLA), photopolymer phase change inkjets, selective laser sintering (SLS), and plaster-based 3D printing. It describes the basic processes and materials used for each technology. For FDM, it explains how a filament is extruded through a heated nozzle to fuse layers together and discusses common thermoplastic materials like PLA and ABS. For SLA, it describes how a laser cures liquid resin in layers. For SLS/DMLS, it explains how a high-power laser sinters or fuses powdered materials in layers.
The document discusses appropriate areas for investment and trade in Ukraine. It analyzes Ukraine's economic sectors including agriculture, mining, industry, automotive, construction, tourism, services, retail, and overall market potential. Agriculture shows high investment potential across activities that can increase productivity and yields. The automotive sector is seen as strategic due to low existing production compared to growing demand. Tourism is also an opportunity, particularly around Kiev and in Crimea. Overall, Ukraine presents opportunities for medium and long-term partnerships and trade given its population size, income levels, and geographical location bordering Europe.
Ringkasan dokumen tersebut adalah proses bisnis unit F&B yang meliputi pengumpulan data omset konsesioner, evaluasi bulanan, pengolahan data ke dalam sistem SAP, pengelolaan sewa ruang dan konsesi, proses settlement tagihan, serta keterampilan yang dibutuhkan seperti analisis bisnis, inovasi, komunikasi intra personal, dan kepekaan terhadap perubahan.
El documento describe diferentes tipos de virus informáticos. Explica que un virus es un malware que altera el funcionamiento normal de una computadora sin el permiso del usuario, y que se propaga al infectar otros archivos. Luego detalla seis tipos de virus: gusano/worm, caballo de Troya, bombas lógicas, hoax, de enlace, y residente.
The document describes a new diffractometer arrangement that combines the openness of a kappa goniometer configuration with an additional degree of freedom for detector movement. Specifically:
1) The detector will attach to a two-degree-of-freedom circle mounted on the vertical axis of an Enraf Nonius kappa goniometer, creating a (3s+2d) diffractometer.
2) This will allow the detector to rotate about the vertical axis as well as a horizontal axis, facilitating detection of out-of-plane scattering vectors.
3) The original servomotors are being replaced with stepper motors and gear trains for more precise sample placement and detection while reducing backlash
El documento describe los elementos clave que deben considerarse al diseñar una clase efectiva. Estos incluyen decidir el propósito y contenido de la clase, seleccionar los conceptos y habilidades a enseñar, diseñar segmentos de actividad, y distribuir el tiempo de clase de manera adecuada. También se debe considerar cómo evaluar el aprendizaje de los estudiantes. El diseño de la clase debe basarse en la construcción metodológica del profesor, teniendo en cuenta las características de los estudiantes y
Modelo de referência e método de avaliação paraqualityquality
O documento descreve o MPS.BR, um modelo brasileiro de melhoria de processos de software. O MPS.BR é dividido em três partes: o MR-MPS define sete níveis de maturidade; o MA-MPS fornece um método de avaliação; e o MN-MPS estabelece como instituições podem se credenciar para implantar o modelo.
The MyUniversity project aims to design and validate an integrated e-participation software platform to empower university stakeholders in transparent decision-making. The platform will be composed of an EU super portal and individual portals for universities in Bulgaria, Lithuania, Slovakia, Spain, and Sweden. It will allow students, professors, and other university members to provide input on educational policies and initiatives at both national and local levels. The universities will trial the platform for 20 months to test its ability to facilitate participation and collaboration.
Havaalanı konumunu, mülkiyeti, seyahat eden verimli yolculari veya hava trafigin sağlayan hizmet tarafindan konferans tesisleri sağlanması açısından önemli farklılıklar yoktur
El documento describe las características de los valientes en el ejército de Dios a través de la historia bíblica. Estos guerreros eran obedientes a la autoridad de Dios, buscaban fortalecerse en su presencia, y estaban bien entrenados y preparados para enfrentar al enemigo. El documento invita a los lectores a desarrollar un espíritu de valentía para defender el reino de Dios.
El documento describe los diferentes tipos de contratos laborales, incluyendo el contrato individual de trabajo, el contrato colectivo de trabajo y la convención colectiva de trabajo. Explica que la convención colectiva de trabajo es un acuerdo entre sindicatos de trabajadores y empleadores para regular las condiciones laborales, mientras que el contrato individual de trabajo es el acuerdo entre un trabajador y empleador para la prestación de servicios a cambio de una remuneración. También identifica a los sujetos principales de estos contratos como los trabajadores, empleadores
This document contains serial numbers and license keys for various software programs, including Nero, Microsoft Office, 3D Studio Max, and Adobe products. The majority are for retail licenses, but some are for site licenses. A wide range of applications are represented, from DVD authoring to 3D modeling to office productivity.
ö New Orleans 2012 draft paper 2011.01.27Tomasz Najder
This document provides information on rock grouting projects using polyurethane (PUR) resins in Iceland and Turkey. It summarizes projects from 1993-2009 that involved grouting in extreme geological and weather conditions. PUR and other resins like urea-silicate were used for grouting to improve rock stability, seal cracks, and fill cavities in complex basalt formations with high water flows. The document discusses the chemical properties and applications of one-component and two-component PUR resins as well as urea-silicate hybrid resins. It also summarizes specific projects in Iceland that demonstrated the effectiveness of PUR for grouting in cold temperatures and high water pressures/flows.
Paper Aachen- Najder engineering 2008.04.17Tomasz Najder
This document summarizes rock grouting projects in Iceland that involved tunneling through complicated geological conditions. It describes an emergency rock grouting project to seal tunnels in Isafjordur that encountered major faults with water inflows over 1,000 liters/second. Improvements were made to grouting procedures including using quick-setting cement grouts and polyurethane resins to stabilize the rock and reduce water inflows. It also discusses a project in Botnsheiði Tunnel that intersected a fault with up to 1 cubic meter/second of water. Grouting methods were optimized using accelerated cement mixes, lightweight sand, and polyurethane resins to stabilize the rock and seal cracks in extreme cold and
The document is a copyright notice for Najder Engineering that repeats for 68 pages. It states contact information for Najder Engineering and prohibits unauthorized copying of the document in whole or in part by any means without prior written permission.
Najder Engineering AB T-bana repairs 2016.03.22 compr.Tomasz Najder
The document is a 31-page report from Najder Engineering AB regarding repairs of subway tunnels using polyurethane resins. Each page contains contact information for Najder Engineering and a copyright notice. However, the document provides no other details on the tunnel repair project, as the content of the report is not shown beyond the first few pages which only contain boilerplate text.
Najder Engineering Södra Länken - grouting for repairs 2014.11.01Tomasz Najder
This document is a 27 page report on the sealing of shotcrete tunnel linings for the Södra Länken project in Stockholm using polyurethane resins. It describes the project, shows photos of the tunnel construction, and details the process of drilling holes in the rock and using pumps to inject two-component polyurethane resins to seal cracks in the lining and grout the surrounding rock.
- Grouting works were performed between an existing tailrace and new powerhouse excavation to address water ingress along a lineament. Initial drilling and grouting in September 2010 using GeoFoam had limited effect on water flow.
- Additional drilling and grouting was conducted in October 2010, including using cement grout and backfilling voids with concrete, gravel, and geotextiles. However, water flow continued to increase up to 20cm/sec.
- Final grouting in mid-October 2010 using two GeoFoam pumps injected over 12,000kg of GeoFoam into boreholes intersecting karstic cavities. This led to a measurable reduction in water flow, likely aided by previous ge
Water leak in karstic limestone at Theun-Hinboun Laos - 2010 compr. (2)Tomasz Najder
The document contains contact information for Najder engineering, an engineering company located in Saltsjöbaden, Sweden. It lists their address, phone numbers, email addresses, organization number, and website on each page for 40 pages. The information is repeated identically on each page.
0 Iceland - pictures from the tunnels 2010.01.09Tomasz Najder
The document reports on several tunneling projects in Iceland that encountered issues with water inflows and ground failures. These include the Breiđaldalur Tunnel and Botnsheiđi Tunnel projects in 1993 that experienced water inflows from faults, and several tunnels constructed as part of the Hydropower Kárahnjúkar Project from 2005-2007 that suffered from leaks, washouts, overbreaks and collapsing tunnel walls and crowns believed to be caused by faults in the ground.
The document discusses the Hedinsfjordur Tunnel project in Iceland. It provides details about the two tunnels that make up the project - the Olafs Tunnel which is 7.1km long, and the Siglu Tunnel which is 3.9km long. The tunnels presented construction challenges like water ingress pressures up to 32 bar and water temperatures as low as 2 degrees Celsius. Work on the project started in 2006 and the tunnels opened for traffic on October 2, 2010, providing an important new transportation link for Iceland.
El documento describe diferentes tipos de virus informáticos. Explica que un virus es un malware que altera el funcionamiento normal de una computadora sin el permiso del usuario, y que se propaga al infectar otros archivos. Luego detalla seis tipos de virus: gusano/worm, caballo de Troya, bombas lógicas, hoax, de enlace, y residente.
The document describes a new diffractometer arrangement that combines the openness of a kappa goniometer configuration with an additional degree of freedom for detector movement. Specifically:
1) The detector will attach to a two-degree-of-freedom circle mounted on the vertical axis of an Enraf Nonius kappa goniometer, creating a (3s+2d) diffractometer.
2) This will allow the detector to rotate about the vertical axis as well as a horizontal axis, facilitating detection of out-of-plane scattering vectors.
3) The original servomotors are being replaced with stepper motors and gear trains for more precise sample placement and detection while reducing backlash
El documento describe los elementos clave que deben considerarse al diseñar una clase efectiva. Estos incluyen decidir el propósito y contenido de la clase, seleccionar los conceptos y habilidades a enseñar, diseñar segmentos de actividad, y distribuir el tiempo de clase de manera adecuada. También se debe considerar cómo evaluar el aprendizaje de los estudiantes. El diseño de la clase debe basarse en la construcción metodológica del profesor, teniendo en cuenta las características de los estudiantes y
Modelo de referência e método de avaliação paraqualityquality
O documento descreve o MPS.BR, um modelo brasileiro de melhoria de processos de software. O MPS.BR é dividido em três partes: o MR-MPS define sete níveis de maturidade; o MA-MPS fornece um método de avaliação; e o MN-MPS estabelece como instituições podem se credenciar para implantar o modelo.
The MyUniversity project aims to design and validate an integrated e-participation software platform to empower university stakeholders in transparent decision-making. The platform will be composed of an EU super portal and individual portals for universities in Bulgaria, Lithuania, Slovakia, Spain, and Sweden. It will allow students, professors, and other university members to provide input on educational policies and initiatives at both national and local levels. The universities will trial the platform for 20 months to test its ability to facilitate participation and collaboration.
Havaalanı konumunu, mülkiyeti, seyahat eden verimli yolculari veya hava trafigin sağlayan hizmet tarafindan konferans tesisleri sağlanması açısından önemli farklılıklar yoktur
El documento describe las características de los valientes en el ejército de Dios a través de la historia bíblica. Estos guerreros eran obedientes a la autoridad de Dios, buscaban fortalecerse en su presencia, y estaban bien entrenados y preparados para enfrentar al enemigo. El documento invita a los lectores a desarrollar un espíritu de valentía para defender el reino de Dios.
El documento describe los diferentes tipos de contratos laborales, incluyendo el contrato individual de trabajo, el contrato colectivo de trabajo y la convención colectiva de trabajo. Explica que la convención colectiva de trabajo es un acuerdo entre sindicatos de trabajadores y empleadores para regular las condiciones laborales, mientras que el contrato individual de trabajo es el acuerdo entre un trabajador y empleador para la prestación de servicios a cambio de una remuneración. También identifica a los sujetos principales de estos contratos como los trabajadores, empleadores
This document contains serial numbers and license keys for various software programs, including Nero, Microsoft Office, 3D Studio Max, and Adobe products. The majority are for retail licenses, but some are for site licenses. A wide range of applications are represented, from DVD authoring to 3D modeling to office productivity.
ö New Orleans 2012 draft paper 2011.01.27Tomasz Najder
This document provides information on rock grouting projects using polyurethane (PUR) resins in Iceland and Turkey. It summarizes projects from 1993-2009 that involved grouting in extreme geological and weather conditions. PUR and other resins like urea-silicate were used for grouting to improve rock stability, seal cracks, and fill cavities in complex basalt formations with high water flows. The document discusses the chemical properties and applications of one-component and two-component PUR resins as well as urea-silicate hybrid resins. It also summarizes specific projects in Iceland that demonstrated the effectiveness of PUR for grouting in cold temperatures and high water pressures/flows.
Paper Aachen- Najder engineering 2008.04.17Tomasz Najder
This document summarizes rock grouting projects in Iceland that involved tunneling through complicated geological conditions. It describes an emergency rock grouting project to seal tunnels in Isafjordur that encountered major faults with water inflows over 1,000 liters/second. Improvements were made to grouting procedures including using quick-setting cement grouts and polyurethane resins to stabilize the rock and reduce water inflows. It also discusses a project in Botnsheiði Tunnel that intersected a fault with up to 1 cubic meter/second of water. Grouting methods were optimized using accelerated cement mixes, lightweight sand, and polyurethane resins to stabilize the rock and seal cracks in extreme cold and
The document is a copyright notice for Najder Engineering that repeats for 68 pages. It states contact information for Najder Engineering and prohibits unauthorized copying of the document in whole or in part by any means without prior written permission.
Najder Engineering AB T-bana repairs 2016.03.22 compr.Tomasz Najder
The document is a 31-page report from Najder Engineering AB regarding repairs of subway tunnels using polyurethane resins. Each page contains contact information for Najder Engineering and a copyright notice. However, the document provides no other details on the tunnel repair project, as the content of the report is not shown beyond the first few pages which only contain boilerplate text.
Najder Engineering Södra Länken - grouting for repairs 2014.11.01Tomasz Najder
This document is a 27 page report on the sealing of shotcrete tunnel linings for the Södra Länken project in Stockholm using polyurethane resins. It describes the project, shows photos of the tunnel construction, and details the process of drilling holes in the rock and using pumps to inject two-component polyurethane resins to seal cracks in the lining and grout the surrounding rock.
- Grouting works were performed between an existing tailrace and new powerhouse excavation to address water ingress along a lineament. Initial drilling and grouting in September 2010 using GeoFoam had limited effect on water flow.
- Additional drilling and grouting was conducted in October 2010, including using cement grout and backfilling voids with concrete, gravel, and geotextiles. However, water flow continued to increase up to 20cm/sec.
- Final grouting in mid-October 2010 using two GeoFoam pumps injected over 12,000kg of GeoFoam into boreholes intersecting karstic cavities. This led to a measurable reduction in water flow, likely aided by previous ge
Water leak in karstic limestone at Theun-Hinboun Laos - 2010 compr. (2)Tomasz Najder
The document contains contact information for Najder engineering, an engineering company located in Saltsjöbaden, Sweden. It lists their address, phone numbers, email addresses, organization number, and website on each page for 40 pages. The information is repeated identically on each page.
0 Iceland - pictures from the tunnels 2010.01.09Tomasz Najder
The document reports on several tunneling projects in Iceland that encountered issues with water inflows and ground failures. These include the Breiđaldalur Tunnel and Botnsheiđi Tunnel projects in 1993 that experienced water inflows from faults, and several tunnels constructed as part of the Hydropower Kárahnjúkar Project from 2005-2007 that suffered from leaks, washouts, overbreaks and collapsing tunnel walls and crowns believed to be caused by faults in the ground.
The document discusses the Hedinsfjordur Tunnel project in Iceland. It provides details about the two tunnels that make up the project - the Olafs Tunnel which is 7.1km long, and the Siglu Tunnel which is 3.9km long. The tunnels presented construction challenges like water ingress pressures up to 32 bar and water temperatures as low as 2 degrees Celsius. Work on the project started in 2006 and the tunnels opened for traffic on October 2, 2010, providing an important new transportation link for Iceland.
CV Tomasz Najder Part 1 2009.09.15 2016Tomasz Najder
Tomasz Najder is a civil engineer from Poland with over 40 years of experience in geotechnical engineering. He has worked as a consultant, contractor, and lecturer on projects in Sweden, Poland, Iceland and other countries. Some of his areas of expertise include soil improvement techniques, ground anchors, micropiles, grouting, and underpinning of historical structures. He is currently a senior consultant at his own firm, Najder Engineering, in Sweden.
0. Part 00 EE, Extreme engineering. 2010.02.15 - part 2 slide showTomasz Najder
The document describes the Héðinsfjarðargöng Project, which involved constructing a 3,300m tunnel using an Earth Pressure Balance Type TBM. This was the first tunnel ever built between two continents, connecting Iceland and Greenland under the sea. During construction, leakage was observed at the face of the Ólafsfjördur Tunnel, which was part of this project. The document also discusses some of the speaker's past projects involving slope protections, gabion walls, and waterproofing systems.
0. Part 00 EE, Extreme engineering. 2010.02.15 - part 1 slide showTomasz Najder
Tomasz Najder is a civil engineering consultant with over 40 years of experience in tunneling, mining, and related fields. He has worked on numerous major infrastructure projects around the world, including tunneling projects in Iceland, Poland, and Sweden. Some of his most notable work includes serving as the grouting expert on the Breiđalsheiđi and Botnsheiđi Road Project in Iceland, which involved tunneling through difficult rock conditions, and working as the senior grouting engineer on the massive Kárahnjúkar Hydropower Project in Iceland, which included over 70km of tunneling.
0. Part 00 EE, Extreme engineering. 2010.02.15 - part 1 slide show
CV Tomasz Najder Part 3 2009.06.07 2016
1. sid 1 av 6
Najder engineering®
Movägen 3; SE-133 36 Saltsjöbaden/Sweden
Tel: +46 8 717 5714 Fax: +46 8 717 6042 Mobil: +46 (0)704 217 012
Org. no: 490911-2148 VAT-no: SE490911214801 E-mail: tomasz.najder@hotmail.com http://najder.se/
Stockholm, 07.06.2009 (2016)
TomaszNajder (Ph.D Civ. Eng.) - Part3
Personalia Date of birth: 1951-08-30
Address: Movägen 3, SE-133 36 Saltsjöbaden (Sweden)
Tel: 0046 (8) 717 57 14, fax: 0046 (8) 717 60 42, mobile: 0046 (0)704 217 012
E-mail: tomasz.najder@hotmail.com
Legal status: married, 2 children (adults).
Experience
Since 07/2005 Najder Engineering®
Stockholm
Senior Consultant within family company.
Activities as Senior Grouting Consultant and Contractor's Representative
For Metrostav- Héðinsfjarðargöng Project 04/2007- 02/2009.
Tunnel Contractor: Metrostav a.s. Divize 5, Na Zatlance 1350/13,
150 00 Praha 5 / The Czech Republic.
Metrostav a.s., á útlibú á Islandi, Skeifunni 11, 108 Reykjavík / Iceland.
Project description:
- The D&B 2 tunnels with clearance profile according to Norwegian profile T 8.5:
1. Siglufjörður Tunnel:
Total length 3.875 m.
Mined section length 3.650 m.
Mined cross section 52.83 m2
.
Cross section at widening 75.25 m2
.
Open cut (west portal) 125 m.
Section with 1% gradient (driven uphill) 1.625 m.
Section with 3% gradient (driven downhill) 2.025 m.
Open cut (east portal) 100 m.
Mined section volume 200.000 m3
.
2. Ólafsfjörður Tunnel:
Total length 7.150 m.
Mined section length 6.925 m.
Mined cross section 52.83 m2
.
Cross section at widening 75.25 m2
.
Open cut (west portal) 150 m.
2. sid 2 av 6
Najder engineering®
Movägen 3; SE-133 36 Saltsjöbaden/Sweden
Tel: +46 8 717 5714 Fax: +46 8 717 6042 Mobil: +46 (0)704 217 012
Org. no: 490911-2148 VAT-no: SE490911214801 E-mail: tomasz.najder@hotmail.com http://najder.se/
Section with 1% gradient (driven uphill) 1.450 m.
Section with 3% gradient (driven downhill) 5.475 m.
Open cut (east portal) 75 m.
Mined section volume 380.000 m3
.
Siglufjörður Tunnel Geology
Dominating rock is basalt with sub-horizontal bedding, with changing porosity and with transfer to
fine-grained facia. Variability of the massif in the horizontal direction is given by the conditions
during the overthrust creation (e.g. gas effects, liquid circulation, cooling of lava), therefore even the
transition into the smear of volcanic breccias of soil character are not uncommon.
During the excavation the sedimentary tuff layer was identified for the length of 400m. Its thickness
was approximately 1m with slight dip to SW. The encountered dykes are also of basaltic character,
NS direction with the steep dip, the thickness usually in metres.
Some encountered faults with the thickness between 1m to 5m are formed by mylonitized rock and
they have certain negative impact on the tunnel excavation. Less widespread is NW-SE tectonics,
which is probably younger than NS tectonics. It could be characterized by the breccias disturbance of
the rock with local caverns.
At the same time the larger water inflows could be encountered.
Ólafsfjörður Tunnel Geology
The excavation so far is in volcanic tertiary rocks, mostly basalts and partially volcano-clastics.
The basalts are fine to medium grained, compact and also foamed by gas, often with zeolite.
The dykes are formed also by basalt, but more brittle and more broken than in Siglufjörður Tunnel.
Volcano-clastic sediments are represented by scoria and red sandstone. In the basalt formations there
are interbedds of nearly horizontal fine-grained tuff layers.
The rock classification (according to the Czech Standard CSN 73 1001) is predominantly between
R2 –R4, the Q value according to the Barton NGI classification is 0.08 to 7.0.
The rock mass is heavily broken. The main joint sets are orientated either perpendicularly to the
tunnel axis, or parallel to it. Their dip is very steep, mostly around 80º.
In many places the rock is heavily broken as a result of tectonic forces. Up to the station km 13.100
the water inflows into the tunnel were not significant with low impact on the excavation itself.
Only behind this station the water ingress started to be higher, in the station of km 12.940 the water
inflow reached more than 2.000 l/min.
4. sid 4 av 6
Najder engineering®
Movägen 3; SE-133 36 Saltsjöbaden/Sweden
Tel: +46 8 717 5714 Fax: +46 8 717 6042 Mobil: +46 (0)704 217 012
Org. no: 490911-2148 VAT-no: SE490911214801 E-mail: tomasz.najder@hotmail.com http://najder.se/
Grouting activities:
- Pre grouting with ordinary cement- , micro cement or ultra fine cement grouts and polyurethane
resins (even in extremely cold water temperature like +1 ºC).
- Refilling of caverns as pre- and post grouting with urea-silicate foams.
- Post grouting for sealing and rock stability (consolidation grouting) with cement grouts (even
accelerated), polyurethane resins and urea-silicate foams.
- Stopping of water under pressure > 20 bars in warm and very cold water (like +1 ºC).
5. sid 5 av 6
Najder engineering®
Movägen 3; SE-133 36 Saltsjöbaden/Sweden
Tel: +46 8 717 5714 Fax: +46 8 717 6042 Mobil: +46 (0)704 217 012
Org. no: 490911-2148 VAT-no: SE490911214801 E-mail: tomasz.najder@hotmail.com http://najder.se/
References:
1. Håkan Stille, Professor at Royal Institute of Technology KTH, Geokonsult Stille AB.
Mobile: 0046 708-62 29 97 (Sweden).
2. David Cyroň, Ermin Stehlik, Metrostav a.s., divize 5.
Telephone: 00354 840 1311 (Iceland).
3. Björn A. Hardarson, Senior Geotechnical Engineer, GEOTEK.
Telephone: 00354 511 1450 (Iceland).
4. Mike Talliss, Contract Manager, Mott MacDonald and VIJV.
Mobile: 00354 894 6378 (Iceland).