Usage and Applications of Horizontal Directional Drilling
Horizontal Directional Drilling (HDD) is the fastest growing trenchless technology for the installation of pipes,conduits,and cables in underground bore-path construction.This is can be referred to the suitability of the technique for different soil conditions (hard and loose soils),applicability in crossing natural barriers such as rivers,lakes,and valleys,and artificial barriers such as highways and airport runways.Also,the technique has the less construction and restoration cost of new water and wastewater pipes and for rehabilitation of failing pipes in urban areas where excavation is unrequired or impossible.The 12 HDD operational units in 1984 increased to 2,000 HDD operational units in 1995.Approximately,17,800 HDD unites were manufactured and sold during the period between 1992 and 2001 in the North America.About 32,135 units has been manufactured and sold worldwide including the year 2011 (projected statistics for 2011),80% (25,708 units) were manufactured in USA.In this paper,HDD survey was conducted to get the current market and industry position of HDD technology by analyzing 14 responses from HDD contractors and consultants in USA.Topics studied included observed HDD applications in different soil conditions,project parameters (diameters,lengths,depths of boreholes,product pipe and materials),and HDD rig size and applications.
Mohmd Sarireh Mohammad Najafi Lawrence Slavin
Full-time Lecturer, Tafila Technical University, Department of Civil Engineering, P.O. Box 179, Tafi Director of the Center for Underground Infrastructure Research and Education(CUIRE), The University Principal, Outside Plant Consulting Services, Inc., 15 Lenape Avenue, Rockaway, NJ, 07866
国际会议
北京
英文
1835-1847
2012-10-14（万方平台首次上网日期，不代表论文的发表时间）