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地震 ›› 2001, Vol. 21 ›› Issue (2): 59-64.

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非均匀岩石钻孔崩落方位的模拟与研究*

刘威, 石耀霖   

  1. 中国科技大学研究生院,北京 100039
  • 收稿日期:2000-07-06 修回日期:2000-10-11 出版日期:2001-04-30 发布日期:2022-10-27
  • 作者简介:刘威,男,辽宁海城人年在读博士生主要从事地球动力学计算机图形学研究。
  • 基金资助:
    国家重点基础研究发展规划项目(G98040706)

Simulation and study on orientation of bore hole breakout in inhomogeneous rocks

LIU Wei, SHI Yao-lin   

  1. Graduate School, University of Science and Technology of China, Beijing 100039
  • Received:2000-07-06 Revised:2000-10-11 Online:2001-04-30 Published:2022-10-27

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RFPA方法进一步应用的前景。

关键词: 钻孔崩落, RFPA方法, 地应力测量

Abstract: Bo re 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 st ress predicted by idealistic elastici ty. We use a Weibull dist ribution to describe the scat ter of mechanical property of rocks, and apply the RFPA method to simulate the bore hole breakout in inhomogeneous rocks to study theiro rientation dist ribution and possible errors. It is also shown that the RFPA method has broad future of application.

Key words: Bore hole breakout, RFPA method, Stress measurement

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