TRENCHLESS TECHNOLOGY

ABSTRACT

Trench less technology is the science of installing, repairing and renewing underground Pipes, ducts and cables using techniques which minimize or eliminate the need for excavation. It can reduce environmental damage, Social costs and produce in alternative to open trench method of installation, renewal and repair it includes in, development of all kinds of underground napping techniques, tunneling devices and specialist materials and equipment.

INTRODUCTION

Trench less technology is basically making a tunnel below the surface and staling service lines like water or gas pipes, electric or telecommunication cables etc. with out any disruption to the public. It also makes it possible to install the utilities under rivers canals and other obstacles with no disruption of flow and with minimum or no damage to the environment.

ADVANTAGES OF NO-DIG TECHNOLOGY

(a) It reduces damages of valuable surface.

(b) It reduces the danger of improperly compacted excavations.

© It saves resources.

(d) It is accident free.

(e) It avoids traffic jam.

(f) It makes the use of the line(track) of the old pipe possible.

(g) It saves underground space (pipe busting).

(h) It reduces the impact on the environment.

(i) It provides the hassle-free road surface.

(j) It is possible to lay service lines across railway track, narrow lanes etc. When open trenching is impossible.

(k) Presence of a canal, pond, river etc. across the root poses no problems to the trench less technology systems.

(l) Without disturbing the traffic and life on the surface, the lines can be laid below ground in a much shorter time by using this technology.

(m) For replacement, repair and rehabilitation of old water and sewer lines in cities, it is very helpful to use trench less technology without disturbing the normal life on the surface.

CONCLUSION

With all round developments in various fields like petrochemicals where conveyance of gas, crude and refined products over long distances is common, telecommunication and power, water supply and sewerage etc. and mushrooming growth of high- rise buildings in and in and around the cities 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. Also if costs benefit analysis of the two systems (i.e. open trenching methods and trenchelss technology methods) is conducted, considering both direct and indirect costs, it will help us make informed divisions on technology selection, under different circumstances.