Results 121 to 130 of about 234 (181)

Trenchless Technology

Water and Environment Journal, 1990
ABSTRACTThis paper outlines some of the technical developments which have given rise to the rapid advance in trenchless construction. The paper then discusses some of the other factors ‐ political, administrative, and legal ‐ which affect the adoption of the new technology.
exaly   +2 more sources

Development and applications of trenchless technology in China

Tunnelling and Underground Space Technology, 2008
Abstract Trenchless technology has developed for almost 10 years in China since the first symposium on trenchless technology was held in Beijing (Peking) in 1996 and the China Society for Trenchless Technology-CSTT was established in 1998. Driven by the dramatically increased demand for underground pipeline installation throughout the nation, China ...
Baosong Ma, M Najafi
exaly   +2 more sources

Geotechnical Investigations for Trenchless Technology

New Pipeline Technologies, Security, and Safety, 2003
The paper discusses improved methods for planning and executing geotechnical investigations for trenchless technology projects. The investigation process and its three phases: planning, investigation, and reporting are reviewed in some detail, and presented is an iterative approach along with anticipated inputs and outputs.
Tom Richardson, Mohamed Younis, Paul Headland   +2 more
openaire   +1 more source

Economics of Trenchless Technology

1992
Operators are faced with the difficult decision of determining when it is economical to use trenchless methods over conventional technology. Trenchless methods have been historically selected for the following reasons: 1. Restoration costs are high. 2. Municipal authorities prohibit the open-cut trenching of key streets or highways.
Steven R. Kramer, William J. McDonald, James C. Thomson   +2 more
openaire   +1 more source

Developments in trenchless technology

Tunnelling and Underground Space Technology, 1989
Abstract It has been a matter of economic necessity to improve the efficiency of old underground plants by devising systems of rehabilitation rather than by providing the much greater funds required for their traditional replacement. With the worldwide “explosion” in surface traffic, replacing outworn services and installing new ones by disruptive ...
openaire   +1 more source

An Overview of Common Methods in Trenchless Technology

Construction and Materials Issues 2001, 2001
The demand for installing new underground utility systems in congested areas with existing utility lines has increased the necessity for innovative systems to go underneath in-place facilities. Environmental concerns, social (indirect) costs, new safety regulations, difficult underground conditions (existence of natural or artificial obstructions, high
Mohammad Najafi, Yona Rasis, Sanjiv Gokhale   +2 more
openaire   +1 more source

Trenchless Technology in India — An Overview

2020
Liberalization, globalization and privatization policy of the Government of India has generated positive response for the foreign participation in development of Indian economy and industry and has created unprecedented opportunities for industrial and economic growth.
openaire   +1 more source

Selection Method for Trenchless Technologies

Journal of Infrastructure Systems, 1997
Trenchless technologies offer contractors and end users (primarily municipalities) a broad spectrum of tools from which to select when installing or rehabilitating underground infrastructure. Due to the large and expanding number of trenchless methods available, the decision as to which tool to use for any given underground infrastructure problem is no
openaire   +1 more source

TRENCHLESS TECHNOLOGY APPLICATIONS FOR UTILITY INSTALLATION

Arboricultural Journal, 1997
In recent years there have been increasing claims of damage to tree roots caused by the installation of utilities—cable, gas water, electricity and telecommunications.
James Thomson, Peter Rumsey
openaire   +1 more source

Development of trenchless technology

1993
Trenchless technology broadly brings under one banner a variety of non-disruptive techniques for installing, replacing or renovating underground pipes and cables without open-cut excavation. The term was introduced as recently as the early 1980s.
openaire   +1 more source