水平定向钻技术在岩土工程勘察中的应用

Application of Horizontal Directional Drilling Technology in Geotechnical Engineering Investigation

针对岩土工程勘察问题,提出一种新的水平定向钻技术,其具有勘察精度高、适用范围广、环境友好等特点,解决了传统垂直定向钻中设备移动困难、费时费力的问题,实现了远距离的精准钻芯检测。工程实践应用表明,水平定向钻技术通过取芯测试、地应力测试、综合测井、CCTV检测等流程,不仅可准确记录钻进速度、深度等指标,还能借助地面接收器对孔内影像实时观测,自动存储全部影像资料。

Aiming at the problems of geotechnical engineering investigation,a new horizontal directional drilling technology is proposed,which has the characteristics of high investigation accuracy,wide application range and environmental friendliness.It solves the problems of difficult equipment movement and time-consuming and laborious in traditional vertical directional drilling,and realizes remote accurate core detection.Engineering practice shows that the horizontal directional drilling technology can not only accurately record the drilling speed,depth and other indicators through coring test,in-situ stress test,comprehensive logging and CCTV detection,but also can automatically store all the image data by means of real-time observation of the borehole images with the help of the ground receiver.