In the present scenario of vast growing construction techniques, the traditional
“Dig-lay-cover”/”open trench” techniques seems to be ineffective in various utilities .Presently
Telecommunication, power, water, sewerage and related underground utility system and services in most metro cities are under great pressure .So any further dislocation in these system and services for a long or short span will adversely effect both its users as well as other on going
developmental projects . Hence there is an urgent need for “Trenchless technology” to develop as well as to rehabilitate all these utilities .With a close look on world wide development it seems that Trenchless technology is still in infant stage in India. Planners and Designers need to understand the opportunities that the alternative Trenchless technology have to offer available with continuing economic advantages. With Trenchless installation refurbishment and rehabilitation techniques, a wide range of social, technical and economic advantages will also be readilyavailable.The present study investigates, analyses and offers the methods , factors affecting Trenchless technology ,its advantages and comparative study with other and there by way of Implementing this in a better way.

Introduction:
Trenchless technology is the science of installing , repairing and renewing
underground pipes , ducts and cables using techniques which minimize or eliminate the need
for excavation. Nearly all the service organization have a huge involvement in underground
pipelines, cables and conduits. Each has a particular interest in installing new pipe lines at
minimum cost. Many of these services require conduits too small for man entry and conven-
tional tunneling techniques are not available. Traditional open trench method seems ineffective
for present requirement like under roads, railway tracks, highways, sewers, drains, cables etc.
without any disruption to traffic as it is not necessary to dig up or cut across the road. Other
obstacles encountered in adopting this old methods are described as follows:

 obstructions on roads, busy areas diversions have to be provided before start of digging
of work and entailing avoidable expenditure.
 The cost of fuel as well as additional time wastage is huge over the total period of constr-
uction though not directly attributable to project cost.
 cutting dip trenches in congested areas ,cracks appear on the adjacent buildings resulting in
stay orders.
 damage cost to other service lines/cables present in ground due to lack of application of
modern tools.
 Enormous amount of excavated earth has to be carted away regularly on a day to day basis
causing noise and dust pollution . the same earth has to be brought back for refilling .
 Trees ,shrubs , gardens may have to destroyed damaging environment.