某抽水蓄能电站水压致裂法地应力测试分析

The stress test analysis for the hydraulic fracturing applied in a pumped-storage power station

由于水压致裂法能在深钻孔中测量岩石应力并且具有花费较少的优点,因而得到了广泛的应用。测量原理表明,水压致裂应力测量过程中的一些特征压力点,如破裂压力Pb、重张压力Pr、关闭压力Ps等与岩石应力有关。实例分析证实,水压致裂法应用于地应力分析是合理可行的。

The hydraulic fracturing has the advantages of a less costly in measuring the rock stress in deep drilling and therefore is widely applied. Its Measuring principle indicates that some feature pressure points in the process of hydraulic fracturing stress measurement have relation with rock stress, such as the breakdown pressure Pb, re--pressure Pr, closure pressure Ps etc. The practice Analysis confirmed that the method is reasonable and practicable when it is used in the stress analysis.