地应力测量值得注意的若干问题  

SOME PROBLEMS OF IN-SITU CRUSTAL STRESS MEASUREMENTS

作　　者：谭成轩[1] 孙叶[2] 王连捷[1] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]中国地质科学院城市与工程场地稳定性研究中心,河北三河燕郊065201

出　　处：《地质力学学报》2003年第3期275-280,260,共7页Journal of Geomechanics

基　　金：国家自然科学基金项目(No.49802017)资助。

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。Measuring data at home and abroad confirm that tectonic stress near the surface is interfered with by several influence factors and is u sually overlapped by non-tectonic stress,e.g.stress caused by topography.This p aper discusses the problems that need consideration before and after crustal str ess measurements.Before the measurements,we should give full consideration to th e determination of measuring sites and the influences of landforms,rock types,fr actures and so on.After the measurements,an analysis on the various influence fa ctors and reliability of measuring values and correction and comparative analysi s of the mechanical properties of rocks,as well as a representative analysis of the measuring values are necessary.

关 键 词：地应力 构造应力 非构造应力 地应力测量 

分 类 号：P553[天文地球—构造地质学]