Taking the horizontal directional drilling crossing project of Jialing River as an example,when the construction is blocked by complex formation conditions,the technical feasibility and economic applicability of pipe ramming construction and full-rotation drill rig for obstacle clearance are comprehensively analyzed.The drilling arrangement,process flow and equipment selection of the full-rotation drill rig for obstacle clearance construction site are introduced.At the same time,solutions are given for the actual problems encountered in the construction,which provide reference for the smooth progress of the horizontal directional drilling crossing construction under complex formation conditions.
维普
万方数据