Trenchless technology involves installing underground utilities with minimal digging by using innovative methods. The document discusses various trenchless methods for new installations like microtunneling and horizontal directional drilling, as well as rehabilitation methods like pipe bursting and slip lining. It provides details on the processes and gives an example case study of using horizontal directional drilling to install an optical fiber cable underneath a road and museum with constraints. Trenchless technology provides advantages over traditional trenching like less traffic disruption, shorter timelines, and minimizing impacts on surrounding soil and structures.
Trenchless Technology is the the science science of installing, repairing and renewing underground pipes, ducts and cables using techniques which minimize or eliminate the need for excavation.
It is basically basically making a tunnel below the surface and installing service lines like water or gas pipes, pipes, electric or tele communication cables etc.,with out any disruption to the public .
Trenchless construction. Trenchless construction includes such construction methods as tunneling, microtunneling (MTM), horizontal directional drilling (HDD) also known as directional boring, pipe ramming (PR), pipe jacking (PJ), moling, horizontal auger boring (HAB) and other methods for the installation of pipelines and cables below the ground with minimal excavation.
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Trenchless Technology is the the science science of installing, repairing and renewing underground pipes, ducts and cables using techniques which minimize or eliminate the need for excavation.
It is basically basically making a tunnel below the surface and installing service lines like water or gas pipes, pipes, electric or tele communication cables etc.,with out any disruption to the public .
Trenchless construction. Trenchless construction includes such construction methods as tunneling, microtunneling (MTM), horizontal directional drilling (HDD) also known as directional boring, pipe ramming (PR), pipe jacking (PJ), moling, horizontal auger boring (HAB) and other methods for the installation of pipelines and cables below the ground with minimal excavation.
trenchless technology pdf
trenchless technology methods
trenchless pipe technologies
trenchless technology contractors
trenchless technology institute
trenchless technology center
trenchless technology conference
trenchless construction methods
interesting civil engineering topics
civil engineering topics for presentation
seminar topics pdf
best seminar topics for civil engineering
civil seminar topics ppt
civil engineering seminar topics 2019
seminar topics for mechanical engineers
mechanical engineering seminar topics 2018
Connecting opposite shores of a lake, sea or river, has always been one of
the major tasks to be faced by Civil Engineering, it being a fundamental need
for the development of the areas surrounding a waterway. Nowadays, this
issue is still topical and of great importance, as it is proved by the numerous
large infrastructures which have been built or planned to be built in the last
years all over the world, such as, for instance the Channel Tunnel, linking the
shores of France with the ones of the United Kingdom, the Immersed Tunnel
under construction in the Bosporus Strait (Turkey) or the Suspension Bridge
designed to connect Calabria and Sicily in the Messina Strait (Italy).
Numerous other important and noticeable cases could be mentioned, however
the aforementioned ones probably represent the most advanced examples of
the structural solutions which are traditionally most widely used to link areas
divided by the presence of waterways: Cable Supported Bridges (i.e.
Suspension or Cable stayed Bridges), Underground Tunnels and Immersed
Tunnels.
An underwater tunnel is a passage, gallery, or roadway beneath a body of water. Underwater tunnels are used for highway traffic, railroads, and subways; to transport water, sewage, oil, and gas; to divert rivers around dam sites while the dam is being built; and for military and civil defence purposes.
Modern underwater tunnelling begins by constructing an immersed tube within a pre-dug trench on the river or sea floor. To do this, pre-fabricated sections of steel tube are floated into position and strategically sunk into the trench.
The complexity of the design issues related to these classic technological solutions, increases as the distance to be covered grows up, so that the
crossing of long span waterways can be, in many cases, very difficult and
sometimes impossible. Moreover, the traditional systems feature some
disadvantages which in some cases are of great importance, leading to the
necessity to find alternative technical solutions.
In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
Here is the some basic information regarding Tunneling & Rock Drilling Equipments which I have collected from different resources (Internet,Professors,Experts,Engineers,Companies etc). It would be very helpful for M.Tech students of Construction Engineering & Management.
-RAJARSHI
Connecting opposite shores of a lake, sea or river, has always been one of
the major tasks to be faced by Civil Engineering, it being a fundamental need
for the development of the areas surrounding a waterway. Nowadays, this
issue is still topical and of great importance, as it is proved by the numerous
large infrastructures which have been built or planned to be built in the last
years all over the world, such as, for instance the Channel Tunnel, linking the
shores of France with the ones of the United Kingdom, the Immersed Tunnel
under construction in the Bosporus Strait (Turkey) or the Suspension Bridge
designed to connect Calabria and Sicily in the Messina Strait (Italy).
Numerous other important and noticeable cases could be mentioned, however
the aforementioned ones probably represent the most advanced examples of
the structural solutions which are traditionally most widely used to link areas
divided by the presence of waterways: Cable Supported Bridges (i.e.
Suspension or Cable stayed Bridges), Underground Tunnels and Immersed
Tunnels.
An underwater tunnel is a passage, gallery, or roadway beneath a body of water. Underwater tunnels are used for highway traffic, railroads, and subways; to transport water, sewage, oil, and gas; to divert rivers around dam sites while the dam is being built; and for military and civil defence purposes.
Modern underwater tunnelling begins by constructing an immersed tube within a pre-dug trench on the river or sea floor. To do this, pre-fabricated sections of steel tube are floated into position and strategically sunk into the trench.
The complexity of the design issues related to these classic technological solutions, increases as the distance to be covered grows up, so that the
crossing of long span waterways can be, in many cases, very difficult and
sometimes impossible. Moreover, the traditional systems feature some
disadvantages which in some cases are of great importance, leading to the
necessity to find alternative technical solutions.
In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
Here is the some basic information regarding Tunneling & Rock Drilling Equipments which I have collected from different resources (Internet,Professors,Experts,Engineers,Companies etc). It would be very helpful for M.Tech students of Construction Engineering & Management.
-RAJARSHI
Stripping of liners from pipes using hdd technology (2007)Western Pipeway
In the Spring of 2007 Harry Baum made a presentation at the annual North American Society for Trenchless Technology convention, which was held in San Diego, California. Harry originally contacted Steve Wentworth about his concept--a process/tool to strip failed polyethylene liners from the inside of buried pipes.Steve and Harry perfected that concept and filed for patent protection on the tool. Harry then hired Fishel Co. as a sub-contractor to assist with the work.
Learn more about Western Pipeway at http://www.westernpipeway.com
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.
Underground Wiring System : A Comprehensive Guide by We-Bore-ItWe-Bore-It
Underground wiring is widely implemented by drilling contractors all around the world for burying cables – as the name implies – under the ground. They are preferred in situations where overhead cables are not feasible to implement, especially in heavily populated areas. This document by We-Bore-It explains various advantages and disadvantages of underground wiring system and the different installation methods used for it.
Directional Boring or Horizontal Directional Drilling has replaced all the traditional drilling methods. It has several benefits and has found its way into applications like waterways, roadways, and more. This technique is time-saving and requires less resources comparatively. This piece explains how the entire drilling process is performed while highlighting its benefits as well.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. CONTENTS
Introduction
Definition
Purpose
Methods of trenchless technology
Effect of trenchless technology on surrounding soil
Case Study
Advantages
Limitation
Conclusion
References
3. Introduction
Digging of open trenches is a common practice for laying of almost
all underground utility services.
Cities with growing population have road congestion, vehicular
traffic jams, increasing accidents, pollution problems, etc.
If streets are excavated for laying pipes and cables the situation will
more difficult.
If it happens in rainy season it involves dewatering.
To overcome this problem Trenchless Technology is the best
solution.
4. Definition
Trenchless technology can be defined as an innovative process of
installing utilities, rehabilitating and reconstructing the existing
underground utilities without digging the ground or minimum
digging.
It also means no demolition of buildings, dislocation of traffic, or
disruption of existing sub surface cable or pipe network.
5. Purpose
Gas pipeline
Oil pipeline
Water pipeline
Sewer pipeline
Electric power lines and cables
Data communication cables
Telecommunication cables
6. METHODS of
TRENCHLESS TECHNOLOGY
Trenchless technology methods system have been categorized in to two groups
1) New installation
Micro tunneling
Horizontal directional drilling
Guided drilling
2) Rehabilitation and Renovation
Pipe bursting
Slip lining
Pipe eating
Spray-On Lining
7. MICRO TUNNELING
Micro tunneling is a method of installing new pipelines.
Suitable for pipe dia. less than 1000mm and sewerage work where
surface disruption should be minimum.
Fig. showing Process of micro tunnelling
8. HORIZONTAL DIRECTIONAL
DRILLING
Horizontal drilling systems are widely used for installing pipes under major
obstacles such a large rivers and airports runways.
HDD proceeds in 3 stages
Driving Pilot Hole
Pre-reaming
Pull Back
11. PIPE BURSTING
It is a method of replacing burried pipelines such as sewer, water or
natural gas pipelines.
An expending device called expander head is introduced into the
defective pipelines through a launching pit.
As it travels through the pipelines towards the receiving pit, it breaks
the pipe into many small pieces, pushing the pieces into the
surrounding soil.
New pipe is attached to the back of the expander head,replacing the
line immidiately.
13. SLIP LINING
Slip lining is the oldest method and used for repairing leaks.
Slip lining involves the insertion of a new pipe in an existing pipe.
A new pipe whose dimensions are smaller than the dimensions of
existing pipe is either pulled or pushed into the host pipe.
Polyvinyl chloride pipes are generally used as a new pipes.
After a new pipe has been installed, the space between new pipe and
old pipe is grouted.
15. Effect of trenchless technology on
surrounding soil
New Installation
The primary subsurface risks associated with trenchless construction
are
Heave
Subsidence
Frac-out
Collision with underground obstacles.
Trenchless rehabilitation methods are considered to have little to no
effect on the existing soil, with the exceptions of pipe bursting and
pipe splitting.
16. Case Study
Location: Khan Market, New Delhi, OFC (Optical Fibre Cable)
Project Name: Horizontal Directional Drilling.
Client: Mahanagar Telephone Nigam Limited (MTNL)
Requirements: Installation of 20cm diameter OFC to supply 4G line.
Distance: 100m
Crossing: Underneath the road and old Museum.
Pit Size: Launch pit 4.5m x 1.5m
17. Constraints:
Fully enclosed Garden at the centre of the museum with all plant and
equipment having to be transported through the public galleries to the
job site.
Cable to be installed to connect the enclosed garden to a service area in
a basement 12m away.
The cable route would be beneath the public gallery with installation
being completed during the museum’s opening hours.
Space in the basement was extremely limited.
The cable needed to be installed just 200mm below the buildings
foundations.
Ground Conditions: Hard packed soil and gravel.
Installation Time: 2 Days
18. Trenchless Solution:
To allow all equipment to be moved to the job site through the
museum by man power each 12m cable was divided into three 4m
long sections.
Based on the calculated trajectory of the “blind shot” into the
basement portable runners were placed in the launch excavation.
Initial set-up was very quick allowing two complete 4m sections of
cable to be installed by the end of the first day. Only 1 hour into the
second day.
Welding of the final section of the first duct was complete and
breakthrough into the basement was observed by a very happy client.
Soil removal was achieved by a combination of air pressure and
high pressure jetting to remove final residues.
19. ADVANTAGES OF TRENCHLESS
TECHNOLOGY
A. No Digging -
The only digging involve for the access shaft located some 200M spacing.
Even this shaft can be covered up with steel plates over which the traffic can
flow during busy day time. During lean time traffic period the shafts can be
open up & the work can carry out.
Therefore the disturbance to traffic is minimum or negligible.
B. Trenching below the structure -
It can be used to lay the services below the valuable property and existing
structure like building
C. Across the River or Lake -
It is very use full for laying the service line of gas line below the river or lake.
20. D. Time required -
Trenchless excavation is much faster than a conventional excavation
which may take extra time for shoring, strutting, dewatering,
backfilling etc. All of these can be avoided in Trenchless excavation.
Trenchless technology required about 1 to 3 days where traditional
digging required about 1 to 4 weeks.
E. Site space requirement -
At crossing trenchless technique requires 30 m2 to 80 m2 area
whereas traditional excavation requires @ 300 m2
21. Limitation
If the underground strata consist of both soil and hard material like
rock or boulders different type of machine will be required which
may inconvenient and uneconomical.
Ground obstacle like existing services, old pipe lines etc. May
create a problem
Precise control of gradient and alignment are sometime difficult to
achieve.
Equipment for trenchless technology are presently not manufactured
in India, additional time has to allowed while planning the work.
The machine operator should have extensive experience in this work.
22. CONCLUSIONS
Environmental friendly
Reduce environment Construction hazards
Reduce noise and air quality impacts
Reduce traffic congestion
Cost effective
Trenchless technology is the new way forward
23. REFRENCES
Sai kumar Daddala, Munasir Mohidin, “study of trenchless
technology” , INDSTT
Su Trenchless Technology Selection Guidelines. (2010). New Delhi:
Indian Society For Trenchless Technology.
Onkar K. Chothe,V.S. Kadam , “Comparative Study of traditional
method and innovative method for Trenchless Technology: A
Review” , International Research Journal of Engineering and
Technology (IRJET)
www.istt.com