摘要
钻孔崩落法是地应力测量的一种重要方法 ,但是考虑到岩石力学性质的非均匀性 ,崩落方位角会偏离最小主应力方向。用 Weibull分布来描述岩石力学性质的离散性 ,用 RFPA方法对非均匀岩石的钻孔崩落方位角进行了模拟。通过对模拟结果的分析 ,研究了非均匀岩石钻孔崩落方位角的分布情况。指出了
Bore hole breakout is an important method to measure the orientation of earth stress. For inhomogeneous rocks, actual orientation of break out usually deviates from the minimum compressional stress predicted by idealistic elasticity. We use a Weibull distribution to describe the scatter of mechanical property of rocks, and apply the RFPA method to simulate the bore hole breakout in inhomogeneous rocks to study their orientation distribution and possible errors. It is also shown that the RFPA method has broad future of application.
出处
《地震》
CSCD
北大核心
2001年第2期59-64,共6页
Earthquake
基金
国家重点基础研究发展规划项目!( G980 4 0 70 6)
