Non-Dig Directional Mechanism Research on Hard Rock Stratum
Non-dig underground pipeline laying technology is used widely in municipal construction,railway transportation,communications,water conservancy and transportation of petroleum and natural gas fields.Hard rock Non-dig construction is a construction field with high technology and construction difficulty in recent years.This paper analyzed the current domestic and international hard rock directional methods and types by used and pointed out its advantages and disadvantages,and putted forward a swing driving mode combined with the eccentric bit and DTH to realize Non-dig directional drilling in hard rock.The directional drilling principle is that in directional drilling the eccentric bit lateral force as a fulcrum deflection drilling through the swing mechanism,in order to avoid the drill pipe in curved segment of the cycle characteristics of destruction.On the other hand normal drilling is to use the swing mechanism and the drill pipe coordination with turn slowly to reduce drill speed and the drill pipe damage.The orientation principle is analyzed to solve oriented technology problems and key technologies in hard rock the Non-dig drilling and provides a new method.
Non-Dig Leaf Swing Driving Mode Swing DTH directed agencies Rock Stratum Drilling
Liping Wu Yinzhu Wu
Professor, Changchun Institute of Technology; No.3066, Tongzhi Street, Changchun City Jilin Province 130021
国际会议
北京
英文
1725-1731
2012-10-14（万方平台首次上网日期，不代表论文的发表时间）