A Cost Comparison for Open-Cut and Trenchless Method in City Natural Gas Pipeline Network

摘要

The present work aims at cost comparison of open cut method with the trenchless method that uses Horizontal Direction Drilling. The use of trenchless method is significantly increasing over open cut method. The execution cost of laying network is sum of cost of laying pipeline and cost of restoration of surface. Due to reducing cost of laying network by trenchless method, the reduction in cost of laying has gone down by 50 percent in last six years 2011 -2017 by trenchless method.There are five type of surfaces viz Normal Soil, Brick on edged soling, Cement concrete road, Interlocking tile road and Bituminous road are found in city gas pipeline network . The restoration charge for all the surfaces remained unchanged for last six years i.e, 2011 to 2017. This work includes cost comparison of pipeline laying network for all five type of surfaces in both open cut and trenchless method......