This document discusses rock tunnel engineering. It introduces different types of tunnels and their purposes. Tunnels can have various cross-sectional shapes and be located underground in different ground types. Tunnels are constructed using methods like cut-and-cover, drilling and blasting, or mechanized boring machines. Geotechnical investigations for tunnels are challenging due to uncertainties in ground conditions. Rock mass classification systems help characterize rock strength. The principles of tunnel stabilization and design aim to control ground movements rather than carry ground loads by mobilizing the strength of the surrounding ground.
Necessity/advantage of a tunnel, Classification of Tunnels,
Size and shape of a tunnel, Alignment of a Tunnel, Portals and Shafts,
Methods of Tunneling in Hard Rock and Soft ground, Mucking, Lighting
and Ventilation in tunnel, Dust control, Drainage of tunnels, Safety in
tunnel construction.
tunnel lining may be permanent or temporary based upon their use and requirement. design of lining is done in two parts one is temporary or initial lining design and other is permanent design of the lining. empirical and theoretical methods are major design methods.
Practices in Planning, Design and Construction of Head Race Tunnel of a Hydro...Mohit Shukla
This paper has been selected for oral presentation as well as inclusion in the conference proceedings of the ICCCGE 2016 : 18th International Conference on Civil,Construction and Geological Engineering held in Toronto, Canada during June,
13-14, 2016. This paper was also able to find a position in the international conference of Dams and Hydropower held at Laos in May 2016.
Necessity/advantage of a tunnel, Classification of Tunnels,
Size and shape of a tunnel, Alignment of a Tunnel, Portals and Shafts,
Methods of Tunneling in Hard Rock and Soft ground, Mucking, Lighting
and Ventilation in tunnel, Dust control, Drainage of tunnels, Safety in
tunnel construction.
tunnel lining may be permanent or temporary based upon their use and requirement. design of lining is done in two parts one is temporary or initial lining design and other is permanent design of the lining. empirical and theoretical methods are major design methods.
Practices in Planning, Design and Construction of Head Race Tunnel of a Hydro...Mohit Shukla
This paper has been selected for oral presentation as well as inclusion in the conference proceedings of the ICCCGE 2016 : 18th International Conference on Civil,Construction and Geological Engineering held in Toronto, Canada during June,
13-14, 2016. This paper was also able to find a position in the international conference of Dams and Hydropower held at Laos in May 2016.
Tunnel is an artificially constructed underground passage to by- pass obstacles safely without disturbing the over burden. This module explains about tunnels, their parts, types and importance.
This is a ppt on tunneling safety for 2-4. There are lots of tunnels and the OSHA rules are 45 years old. These are the issues I would consider. I need to fine tune this later. John Newquist johnanewquist@gmail.com
A Review Study on Methods of Tunneling in Hard Rocksijsrd.com
This article presents a review on the different methodologies that are used for tunnels excavations in hard rocks in present era. Growing needs for modern transportation and utility networks have increased the demand for a more extensive and elaborate use of underground space or through high mountains / hills. As a result, more projects have to be completed in various ground conditions and one of which is more challenging is to carry out excavation work in hard rocks. Significant technological advances have rendered these projects possible, but have also given rise to new challenges as many of these projects have to be completed in difficult conditions, with very strict environmental constraints, particularly in urban areas where the potential impact of tunneling on existing structures is a major concern. This paper addresses the main aspects of tunneling and underground works performed in hard rocks. A summary is presented of the more recent advances and widely adopted techniques in these regards.
Tunnel T80 across Pir Panjal Mountain Range: The Longest Transportation Tunne...Hitesh Khanna
The Presentation Covers the General Technical Features of Tunnel T 80 across Pir Panjal Mountain Range, for Kashmir Rail Link. This presentation was made at Civil Engineering Society, IIT Kanpur on 30th September 2013.
Join Ron Prychitko & Lorne Mielty for an overview of various Bridge-Plate, Multi-Plate and Tunnel Liner Plate applications. Through the presentation of various case studies they will cover product selection criteria for corrugated steel plate structures and best practices including assembly and installation.
Case study examples will include bridges, culverts, wildlife passes, mine portals, pedestrian tunnels and more.
What You’ll Learn:
-Learn about unique applications that solve demanding -problems
-Advantages of soil/steel structures
-Construction process for structures
-Available product, application and design resources
-General Canadian Codes and Standards will be referenced
Who Should Attend
-Bridge / Structural Engineers
-Municipal & Transportation Engineers
-Municipal, Provincial and Federal Infrastructure personnel
-Developers
-Earthworks & Highways Contractors
-Mining Engineers & Contractors
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Tunnel is an artificially constructed underground passage to by- pass obstacles safely without disturbing the over burden. This module explains about tunnels, their parts, types and importance.
This is a ppt on tunneling safety for 2-4. There are lots of tunnels and the OSHA rules are 45 years old. These are the issues I would consider. I need to fine tune this later. John Newquist johnanewquist@gmail.com
A Review Study on Methods of Tunneling in Hard Rocksijsrd.com
This article presents a review on the different methodologies that are used for tunnels excavations in hard rocks in present era. Growing needs for modern transportation and utility networks have increased the demand for a more extensive and elaborate use of underground space or through high mountains / hills. As a result, more projects have to be completed in various ground conditions and one of which is more challenging is to carry out excavation work in hard rocks. Significant technological advances have rendered these projects possible, but have also given rise to new challenges as many of these projects have to be completed in difficult conditions, with very strict environmental constraints, particularly in urban areas where the potential impact of tunneling on existing structures is a major concern. This paper addresses the main aspects of tunneling and underground works performed in hard rocks. A summary is presented of the more recent advances and widely adopted techniques in these regards.
Tunnel T80 across Pir Panjal Mountain Range: The Longest Transportation Tunne...Hitesh Khanna
The Presentation Covers the General Technical Features of Tunnel T 80 across Pir Panjal Mountain Range, for Kashmir Rail Link. This presentation was made at Civil Engineering Society, IIT Kanpur on 30th September 2013.
Join Ron Prychitko & Lorne Mielty for an overview of various Bridge-Plate, Multi-Plate and Tunnel Liner Plate applications. Through the presentation of various case studies they will cover product selection criteria for corrugated steel plate structures and best practices including assembly and installation.
Case study examples will include bridges, culverts, wildlife passes, mine portals, pedestrian tunnels and more.
What You’ll Learn:
-Learn about unique applications that solve demanding -problems
-Advantages of soil/steel structures
-Construction process for structures
-Available product, application and design resources
-General Canadian Codes and Standards will be referenced
Who Should Attend
-Bridge / Structural Engineers
-Municipal & Transportation Engineers
-Municipal, Provincial and Federal Infrastructure personnel
-Developers
-Earthworks & Highways Contractors
-Mining Engineers & Contractors
-Road Superintendents
A presentation of a precast segmental casting yard setup showing the required sequential steps. At the time, I worked for Parsons Brinckerhoff as Lead Construction Engineer.
Diaphragm wall: Construction and DesignUmer Farooq
Diaphragm walls are concrete or reinforced concrete walls constructed in slurry-supported, open trenches below existing ground.
Concrete is placed using the Tremie installation method or by installing pre-cast concrete panels (known as a pre-cast diaphragm wall). Diaphragm walls can be constructed to depths of 150 meters and to widths of 0.5 to 1.50 meters.
Areas related to circles - Area of sector and segment of a circle (Class 10 m...Let's Tute
Areas related to circles - Area of sector and segment of a circle (Class 10 maths).
Let's tute is an E-school or E- platform which is free for the student.Students will watch "MATHS" Videos for conceptual understanding.
Contact Us -
Website -www.letstute.com
YouTube - www.youtube.com/letstute
DAMS
Types of dams
Selection of dam sites
Geological characters for investigation
Selection of the dam type
Gravity dams
butress dams
embankment dams
arch dams
cupola dams
composite dams
Bhakra Dam
Mir Alam multi-arch dam
Idukki Dam
Tehri Dam
Ujani Dam or bhima dam
Dam is a solid barrier constructed at a suitable location across a river valley to store flowing water.
Storage of water is utilized for following objectives:
Hydropower
Irrigation
Water for domestic consumption
Drought and flood control
For navigational facilities
Other additional utilization is to develop fisheries
Tunnel Engineering: Introduction to tunneling
Size and shape of tunnel and suitability
Tunneling in hard rock, and soft material
Shield method
Safety measures
Ventilation, lighting and drainage of tunneling
Influence of geological condition on foundation and design of buildingDarshan Darji
these ppt is about Influence of geological condition on foundation and design of building. This Ppt clear your doubt about this influence of geological condition on foundation and design of building.
This presentation provides you the conceptual knowledge as per DBATU, Lonere Last Year BTech Civil subject, Infrastructure Engg. Module-V Tunnel Engineering
Shape and Size of Tunnel Shafts, Pilot Tunnels, Tunneling in Hard Rock, Tunneling in Soft Materials, Drilling-Patterns, Blasting, Timbering, Mucking, Tunnel Lining, Advances In Tunneling Methods, Safety Measures, Ventilation, Lighting and Drainage of Tunnels
etc.
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Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
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Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
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This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
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How libraries can support authors with open access requirements for UKRI fund...
Ecg533 rock-tunnel-engineering
1. Rock Tunnel Engineering
INTRODUCTION
•
Tunnel – a hole in the ground to provide for desired movement or as
mobility channel.
•
Serves as highway, railroad, pedestrian passageway, water
conveyance, waste water transport, hydropower generator, utility
corridor, storage, etc.
•
Tunnel shape: circular, multicurve, horseshoe, arched, flat-roofed.
•
Location: under mountain, cities, river, lakes, straits, bays etc.
•
Ground: soft ground, mixed face, rock, layered, wet, flowing or
squeezing ground.
•
Tunnel constructed ; cut and cover method, drilling and blasting,
mechanized ; TBM , Roadheader,etc.
@DRZBM,Faculty Civil Engg.UiTM
1
2. Example of Underground tunnel Layout
Trans – Tokyo Bay Tunnel.
Example of Underground tunnel Layout
Hampton Roads Bridge-Tunnel,Virginia.1957
@DRZBM,Faculty Civil Engg.UiTM
2
3. Example of Underground tunnel Layout
Soil tunnel- Ribbed support
system
Pergau Dam Tunnel,Kelantan
Smart Tunnel-Tunnel Boring Machine
@DRZBM,Faculty Civil Engg.UiTM
3
6. Geotechnical Investigations Challenges
•
Vast uncertainty in all underground projects.
•
The cost and feasibility of the project is dominated by geology.
•
Every feature of geologic investigation is more demanding than
foundation engineering projects.
•
The regional geology must be known.
•
Engineering properties drastic change with a wide range of
conditions eg time, season, rate and direction of loading etc.
•
Groundwater is the most difficult condition/parameter to predict and
the most troublesome.
•
It is guaranteed that the actual stratigraphy, groundwater flow and
behaviour encountered during construction will be compared with
the geotechnical team’s prediction.
Rock Classification
• Physical rock description- rock types,
Intact strength, weathering state,
Discontinuities.
• Rock mass classification system; RQD
(core loss –indicate a weakness in the
rock),RMR, Q-system.
@DRZBM,Faculty Civil Engg.UiTM
6
7. PRINCIPLE OF TUNNEL STABILIZATION AND DESIGN
• The most important part of design to stabilize ground
movement, not to carry ground load.
• The most important part of tunnel lining is the ground
that surrounds it.
• The most important component of the ground is the
groundwater.
• Most important element of lining construction is to secure
full, continuous contact between the lining and the
ground.
PRINCIPLE OF TUNNEL STABILIZATION AND DESIGN
• The most efficient tunnel stabilization and lining system is
one that mobilizes the strength of the ground by permitting
controlled ground deformation.
• Selection of type of lining depends on excavation methods
that suited ground characteristics, of which ‘ stand-up’ time
is most significant. It affects the magnitudes of ground
deformation and lining loads
• Axial stiffness of the lining permits it to distribute nonuniform ground loads by mobilizing passive pressure from
surrounding ground, thereby modify ground deformation.
• Flexural stiffness of lining is inefficient in modifying ground
deformation
@DRZBM,Faculty Civil Engg.UiTM
7
8. PRINCIPLE OF TUNNEL STABILIZATION AND DESIGN
• Multistage lining can absorb large flexural deformation
and redistribution of ground stresses
• Dimension of lining are controlled by water sealing,
constructability, facility usage rather than ground load
• Load and pressures vary along the length of tunnel
owing to variations in geology and construction
proficiency
• The largest loads on the lining may come from
construction processes
MECHANISM OF FAILURE AND LOAD ANALYSIS
Effect of joint orientation on crown stability
@DRZBM,Faculty Civil Engg.UiTM
8
10. Forces acting on tunnel; support in inclined
strata .( Terzaghi,1964)
E3 : Load on 2-stage
lining system
@DRZBM,Faculty Civil Engg.UiTM
10
11. Load Analysis
- Reinforced rock arch loading
Circular Tunnel : deformation characteristics &
behaviour of flexible rings
c) Partially confined ring concentrated load
a) Unconfined ring -Uniform
radial load
b) Unconfined ring concentrated load
@DRZBM,Faculty Civil Engg.UiTM
d) Fully confined ring- random
load
11
12. Example of analysis using numerical simulation method
TUNNEL LINING
•
Unlined rock- massive and stable rock formation
•
Rock reinforcement systems – sound rock but have structural defects
( rock joints)eq: rock reinforcement to knit the rock mass together so
that it is self-supporting short bolt, untensioned steel dowels, tensioned
steel bolt,
•
Dowel or bolts provide temporary stabilization
•
Shot-crete; stabilization of rock tunnels excavated by drill-and-blast
methods. Shot-crete provide early support in rock with limited ‘stand-up’
time.
•
Ribbed system- timber, steel H-section in poor rock condition
•
Segmental lining- soft ground tunnel
•
Poured concrete –poured-in-place concrete in wet- ground, water
leakage, water proofing membrane
@DRZBM,Faculty Civil Engg.UiTM
12
14. Ground-structure interaction – characteristics of lining
behaviour
• Tunnel lining behaviour is a 4D problem
• During construction, ground conditions at the tunnel
heading involve both transverse arching and longitudinal
arching or cantilevering from unexcavated face.
• All ground properties are time-dependent, The timing of
lining installation is an important variable.
EXAMPLE OF LINING
Steel Fiber Reinforced Concrete Precast
Tunnel Segments
•Tunnel segments are precast and packaged in
a precasting facility before delivery and
placement on site. Steel fiber reinforced
concrete is cast or pumped directly inside the
formworks.
•With respect to design load conditions, it is
possible to use 100% fiber reinforced concrete
in precast tunnel segments.
Fiber reinforced concrete can be applied to precast concrete construction
with excellent results and several key advantages:
•Better aesthetic quality of the product
•Higher mechanical strength in terms of toughness, flexural and shear stress
•Faster industrialized production process through the partial or total elimination of
steel reinforcement cages
•Improved damage resistance during transportation and placing
•Reduced concrete thickness as no reinforcement cover depth is required
•Improved durability in aggressive environments
@DRZBM,Faculty Civil Engg.UiTM
14