Mechanical Analysis of Trenchless Directional Drill String in Horizontal Section and Slant Section

摘要：

　　Trajectory of trenchless directional drill strings included slant section,bending section and horizontal section.Trenchless directional drill strings were under axial compression force during drilling process,while under axial tension force during hole reaming process and pulling back process.Because the trajectory and strength of trenchless directional drill string were influenced by the force exerted on each section,mechanical models of directional drill string were established to analyze the deflection equations and reaction forces in slant section and horizontal section under axial tension force and axial compression force.The boundary conditions in each section were taken as fixed constraint at one end and active constraint at the other end.After the analysis,the expressions of reaction forces as well as the deflection equations were deduced.And also,the reaction forces in horizontal section were got with given parameters of trenchless directional drill string based on the expression of reaction forces.

关键词： Directional Drill String Trenchless Technology Mechanical Analysis Horizontal Section Slant Section

作者: Yinping Cao Yihua Dou Hui Xia

作者单位: Lecturer, College of Mechanical Engineering, Xian Shiyou University, Xian 710065 Professor, College of Mechanical Engineering, Xian Shiyou University, Xian 710065 Master, College of Mechanical Engineering, Xian Shiyou University, Xian 710065

会议类型: 国际会议

会议名称: 第四十届国际海事委员会会议

会议地点: 北京

会议语种:英文

页码: 1789-1797

在线出版日期: 2012-10-14（万方平台首次上网日期，不代表论文的发表时间）