考虑复杂地质成因的工程区地应力场反演  

Regression Analysis of Initial Geostress Field Considering Complex Geologic Origin

作　　者：景锋[1] 尹健民[1] 陈昊[1] 艾凯[1] 

机构地区：[1]长江科学院水利部岩土力学与工程重点试验室,武汉430010

出　　处：《长江科学院院报》2009年第9期51-54,共4页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金资助项目(50639090);长江科学院2009年中央级公益性科研院所基本科研业务专项资助项目(YWF0910)

摘　　要：地应力场多元线性回归是地应力场反演的主要方法之一,但当岩层地质成因复杂时,在反演中应合理考虑岩体地质成因。以国内某大型矿山复杂地质成因工程区地应力场反演为例,尝试在分析地质成因基础上,对现今的应力场进行分解,针对不同地质成因的地层边界施加不同的边界条件,基于线性叠加,利用多元线性回归分析法进行了地应力场反演。结果表明:考虑地质成因的地应力场反演结果符合一般应力场的分布规律,且反演精度高于不考虑地质成因的地应力场反演结果。The regression analysis of stress field is one important method of geostress field back analysis. But if rock stratum geologic origin is complex, the complex geologic origin in simulating initial stress field should be reasonably considered. On the basis of back analysis of stress field of some domestic large-scale mine site, through the assumption of linearity superimpostion and applying different boundary conditions for different geologic origin areas, a regression analysis of stress field is conducted by finite element method. The result shows that results of regression analysis of stress field considering complex geologic origin are in accord with general regularities of geostress field distribution, and the error is apparently less than that of conventional regression analysis of stress field.

关 键 词：地应力场 复杂地质成因 反演 回归分析 

分 类 号：P642[天文地球—工程地质学]