水布垭工程地下厂房区三维地应力测试研究

Three Dimensional Geostress Test in Underground Plant Area of Shuibuya Project

清江水布垭水利枢纽工程地下厂房区水压致裂法地应力测试成果表明：地下厂房区是以自重为主导的应力场，为中等地应力水平地区；地应力场的构成符合该地区地质力学机制。

This paper presents the principle and methods of hydrofracturing goestress measurement in underground plant area of Shuibuya Project on Qingjiang River.The test result shows that the constitute of geostress field accords with the geomechanics mechanism of this area,the gravitational stress is predominant in the geostress field ,which belongs to medium geostress level.