【摘要】 水压致裂法是直接测量地壳较深部应力的有效方法.本文介绍了水压致裂法原地应力测量的基本原理、技术方法和主要的仪器设备;给出了1980年在河北省易县和1981年在江苏省新沂县两次野外实测试验结果;对所测得的原地应力的大小和方向及诱发裂缝形态进行了初步讨论;并将水压致裂法测量结果与套芯法结果做了对比.更多还原

【Abstract】 The hydraulic fracturing technique is an efficient method for direct determination of in-situ stress in deep (boreholes. This article describes the general principle, technique and instrumentation of hydrofracturing, presents the results of two field hydro-fracturing tests performed in Yisian County, Hebei Province (1980) and Xinyi County, Jiangsu Province (1981) respectively, and gives the magnitudes and directions of the in-situ stresses obtained. The results obtained by hydrofracturing are compared with those by overcoring at the same test sites.更多还原