TRENCHLESS TECHNOLOGY

TRENCHLESS TECHNOLOGY TRENCHLESS TECHNOLOGY - Start

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TRENCHLESS TECHNOLOGY - Description

Rohit. . Chaurasia. 71. /08. WHAT IS . TRENCHLESS TECHNOLOGY?. . Trenchless technology is basically making tunnel below the surface and installing service lines like gas pipes or telecommunication cables without disruption to flow and minimum damage to the environment.. ID: 582569 Download Presentation

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TRENCHLESS TECHNOLOGY




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Presentations text content in TRENCHLESS TECHNOLOGY

Slide1

TRENCHLESS TECHNOLOGY

Rohit

Chaurasia

71

/08

Slide2

WHAT IS TRENCHLESS TECHNOLOGY?

Trenchless technology is basically making tunnel below the surface and installing service lines like gas pipes or telecommunication cables without disruption to flow and minimum damage to the environment.

Slide3

TRENCHLESS TECHNOLOGY METHODS

New InstallationRehabillation and Renovation

Slide4

New Installation

MicrotunellingHorizontal directional DrillingShort Drive SystemGuided Drilling

Slide5

Microtunnelling

Remote controlled mechanical tunnel systems where the soil is removed from cutting head with the new pipe line which is advanced by pipe jacking

Slide6

Horizontal Directional Drilling

Genraly used for installing pressure pipes under major obstacles like large rivers, airports etc.Tunnels of approximately 1.5 km long and of up to 1200mm diameter can be made with the help of horizontal directional drilling.

Slide7

Short Drive Systems

Auger BoringImpact MolingRod pushingPipe Ramming

Slide8

Auger boring

Auger Boring also known as “bore and jack”It involves simultaneous jacking a steel case forward while removing soil via rotating auger flight.

Slide9

Impact Moling

Moling is a method, which forms the borehole by compressing the Earth that immediately surrounds the compacting device.

Slide10

Rod pushing

Rod pushing is the technique in which bore of 50mm diameter is formed by displacement . It is used for the installation of pipes of 15mm diameter over 30-40 mm lengths.

Slide11

Pipe Ramming

Pipe Ramming, the pipe is rammed through the soil by using a device attach to the end of the pipe. This method is not suitable where there are solid rock formations. Usually up to 2000 mm diameter pipes can be laid by this technique.

Slide12

Guided Drilling

Guided drilling employs the excavation or soil displacement with compact light weight rig for rapid mobilisation.

Slide13

Rehabilitation & Rennovation

Pipe BurstingPipe EatingRelining the existing pipesLocalised repairSliplining

Slide14

Pipe Bursting

An existing pipeline can be replaced with pipeline of the same or larger dimension without opening the ground.

Slide15

Pipe Eating

Pipe eating is online microtunnel replacement technique.The existing pipeline is crushed and removed through a new pipeline.

Slide16

Relining the Existing Pipes

This method require access, usually by manholes, at both end of the pipes.Pipe is relined at the places where the joints have moved or sections are missing ,but the passage should be available.

Slide17

Localized Repairs

Local defects may be found in pipes are due to cracking or joint failures.Chemical grouting with urethane and similar materials are used in sewer rehabilitation.

Slide18

Sliplining

A new pipeline of smaller diameter is inserted into the defective pipe.The inserted pipe is then expanded to fit tightly against the existing wall.

Slide19

Pre-requisites

Site investigationCondition surveyUnderground detection

Slide20

Advantages of “No-Dig” Technology

Reduces damages of valuable surface.

Save resources.

Accident free.

Avoids traffic jam

Reduces impact on environment.

Saves underground space.

Slide21

Conclusions

With all round developments in various fields like petrochemicals where conveyance of gas, crude and refined products over long distances is common, telecommunication and water supply and sewerage etc. It is becoming increasingly necessary that these lines are laid underground leaving space above surface comparatively free. i.e., Adoption of trench less technology is the only remedy.

Slide22

Thank you

THANK

YOU


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