套筒致裂单孔三维地应力测试法的原理与应用

Principle and application of three-dimensional in-situ stress test method by single hole sleeve fracturing

详细介绍了一种操作简单,应用广范,计算结果全面且具有较高精度的地应力测试方法及其原理。该方法使用JHDC-1型套筒致裂地应力测试仪,依据弹性力学的相关理论并结合矿井实际地质条件,仅凭一孔致裂即可确定测试点最大、最小水平地应力和构造应力的数值,并且可以进一步推算出主地应力的大小和方位。该测试方法简便、快捷,非常适合煤矿井下地应力测试。

This paper introduces a kind of in-situ stress test method and principle which have advantages of simple in operation,wide application and comprehensive calculation results with high precision. Using JHDC-1 in-situ stress sleeve fracturing test instrument,and according to the elastic mechanics theory combining with actual geological conditions in coal mine,the maximum and minimum horizontal stress and tectonic stress of the test point can be determined only by one hole fracture,and the value and orientation of principal stress of the test point can also be calculated. This test method is simple,fast and very suitable for coal mine ground stress test.