岩体变形模量的尺寸效应

Size effects on deformation modulus of rock

岩土工程中,现场岩体的承压板试验和变形试验可看作是不同尺寸岩体的变形试验。在某工程的现场岩石力学试验中,对同一组试点的岩体先后进行了承压板变形试验和承载力试验,研究了岩体变形模量的尺寸效应,结果表明,岩体变形模量主要受岩体中的裂隙发育状况控制,当岩体质量较好时,可以由承载力试验曲线来确定岩体的变形特性,这一做法具有一举两得的效果。

In geotechnical engineering, the rock mass deformation test and bearing capacity test can be taken as rock mass deformation test of different sizes. In order to explore the size effects on deformation modulus of rock, the authors carried out in-situ deformation tests and then bearing capacity tests for the same specimens. The results show that deformation modulus of rock are mainly affected by joints in rock mass. When rock masses are of good quality, the deformation modulus can be measured from bearing capacity test, so the experiments are multifunctional.