不同岩石条件下地应力解除测量技术可靠性的试验研究

TEST AND STUDY OF RELIABILITY OF STRESS RELIEF BY OVERCORING TECHNIQUES IN DIFFERENT ROCK CONDITIONS

本文介绍一种简单而实用的方法,用来试验和评价各种地应力解除测量技术和仪器在不同岩石和应力条件下的工作可靠性和适用性.提供了试验的主要结果,对岩石的不连续性、不均质性和各向异性对测量结果的影响作出了定量分析并提出了校正这些影响的方法.为改善现有地应力测量仪器的工作性能,提高测量精度,对测量过程和计算方法做出了一系列重大改进.试验也为如何根据具体岩层条件选用合适的测量方法提供了科学依据.

This paper proposes a simple and practical approach to test and evaluate the reliability and suitability of overcoring stress measurement devices under different rock conditions. The major experimental results are presented. Quantitative analyses of the effect of discontinuity, nonhomogeneity and anisotropy of rock masses on measuring results were performed and techniques are recommended to minimize the effect. Improvements were made on measuring process and calculation methods to increase the measuring accuracy. Test results also provide a scientific basis for choosing suitable devices Under given rock conditions.