通过对各种地应力测量方法的对比研究,格鲁兹(Glotzi)压力盒的考查,模拟材料的试验研究,和CYG-00型液压应力计与试件加压方向成不同夹角(0°、45°、90°)的模拟试验,我们首次提出了采用“液压钻孔应力计”直接测定软岩应力的方法和原理。本文介绍液压钻孔应力计的结构原理、使用方法和模拟试验结果。 Through the comparative study of various ground stress measurement methods, the examination of the Glotzi pressure cell, the experimental study of the simulated material, and the CYG-00 type hydraulic stress gauge have different angles with the pressure direction of the test piece (0°). For the simulation test of 45° and 90°, we first proposed the method and principle of using “hydraulic borehole stress gauge” to directly determine the stress of soft rock. This article describes the structure principle, use method and simulation test results of hydraulic drilling stress gauges.