摘要
软弱岩带的变形模量对于工程建设意义重大,当前变形试验方法难以表征原位条件下软弱岩带的变形模量,导致取值偏于保守。本文基于弹性力学推导了下卧软弱岩带变形模量的解析解,建立了一种新的软弱岩带变形模量的取值方法。在现场试验成果的基础上,采用有限元反演,数值模拟成果与试验计算成果较为吻合,证明该计算方法合理可行,较常规方法直接在软弱岩带上开展的试验成果大幅提高。
Deformation modulus of the weak rock zone has a great significance on the project construction.It is difficult for the current deformation test methods to characterize deformation modulus of the in-situ weak rock zone,which results in conservative values.In this paper,on the basis of theory of elasticity,analytical solution of deformation modulus of underlain weak rock belts is deduced.A new evaluation method of deformation modulus of weak rock zone is established.On the basis of field test and finite element inversion,it is shown that the calculation method is reasonably practicable between the results of numerical simulation and experiment calculation.It can greatly improve the test results that are conventionally and directly carried out on weak rock zone.
出处
《工程地质学报》
CSCD
北大核心
2011年第1期99-102,共4页
Journal of Engineering Geology
基金
岩体原位模量及空间特征研究(编号:40072090)
关键词
软弱岩带
变形模量
天然围压
原位条件
解析解
Weak rock zone
Deformation modulus
Natural pressure
In-situ
Analytical solution
