THE HYDRO-FRACTURING IN-SITU STRESS MEASUREMENT AND ANALYSIS FOR WANJIAZHAI KEY WATER CONTROL PROJECT
万家寨水利枢纽水压致裂应力测量结果和分析

Hydrofracturing insitu stress mesasurements of three boreholes in Wanjiazhai key water control project have been carried out. The Maximum and the minimum horizontal stresses and the direction of the maximum horizontal stress are obtained. According to the test results, the stress state of this area is analyzed. The stability of the dam and the undergroundl pump station are discussed also.