SOME PROBLEMS OF IN-SITU CRUSTAL STRESS MEASUREMENTS
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摘要: 国内外实测资料证实地表附近构造应力受多种影响因素的干扰,经常叠加着非构造应力(如地形等引起的应力).本文讨论了地应力测量前后值得注意的若干问题:地应力测量前应充分考虑测量孔位的选定和地形地貌、岩性、断裂等的影响;地应力测量后应对测值的各种影响因素和可靠性进行分析,进行岩石力学性质校正和对比分析以及测值的代表性分析等。Abstract: Measuring data at home and abroad confirm that tectonic stress near the surface is interfered with by several influence factors and is usually overlapped by non-tectonic stress,e.g.stress caused by topography.This paper discusses the problems that need consideration before and after crustal str ess measurements.Before the measurements,we should give full consideration to the determination of measuring sites and the influences of landforms,rock types,fractures and so on.After the measurements,an analysis on the various influence factors and reliability of measuring values and correction and comparative analysis of the mechanical properties of rocks,as well as a representative analysis of the measuring values are necessary.
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Key words:
- geostress measurement /
- geostress /
- tectonic stress /
- non-tectonic stress
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