反分析在岩土工程中的应用

Opposite Analysis Used in Rock Engineering

众所周知,岩体是极其复杂的地质体,它具有非均质各向异性特点,故工程一般都要通过大量的试验测定,来确定岩体应力场和其它力学参量,不但费工费时,而且往往很难得到理想的效果。本文在国内外成果研究的基础上,应用力学计算理论,根据工程部份变形观测资料,反演确定宽域的初始地应力和弹性模量值。反分析可以大大减小试验工作量,达到相互验证,提高工程效应。并通过实例计算,说明对工程具有一定的实用价值。

It is well -known that a rock body is an extremely complex geologic body,which has different directional features of anisotropy ; therefore, the rock body stress fields and-other mechanic parameters are generally determined through a large number of tests. In this way,not only much work and time are wasted,but also the result is difficultly obtained and not ideal. Based on the researches on some achievements at home and abroad,this paper deals with the computation of theory by using mechanics,observation of data according to partial deformation of engineering and determination of original crustal stress of wide field and elastic modulus value by using opposite analysis method can greatly reduce the amount of testing work,test and verify each other,and improve engineering efficiency. Through sample computation,it has been proved that this method is of certain practical value in engineering.