Boundary Element Method And Program Of Joint Fissure Damage In Rock Mass Mechanics

The boundary element method is applying more and more abroader in rock mass engineering. While apply in isotropy rock mass mostly. Although it has some developments in anisotropy rock mass, it still lacks applications in joint fissure damage rock mass. This paper has do some research in-depth about the application of boundary element method in joint fissure damage rock mass on the basis of formers' work, several boundary element programs which apply in different kind rock mass are empoldered. The main contents are asfollow:1. Some research about the application of boundary element method(BEM) in anisotropy rock mass has been done. The Asio-twofs program which applies in anisotropy rock mass is compiled on the basis of twofs program applying in isotropy rock mass. The effect of joint on excavations is analysed.2. The constitutive model of rock mass including many cracks under the acting of compressive stress and tangential stress is introduced into BEM. Boundary value problems in anisotropy rock mass including many cracks are studied. The Cra-twofs program computing boundary value problems in anisotropy rock mass including cracks is compiled on the basis of twofs program computing problems in anisotropy rock mass. The effect of crack on excavations is analysed.3. Two-dimension constitutive model of anisotropy and damage rock mass is introduced into BEM. Boundary value problems in anisotropy damage rock mass are studied and the Dam-twofs program is compiled. The effect of rock mass damage on excavations is analysed.4. Studied the application of BEM in heterogeneous rock mass and compiled the Liner-twofs program analysing and computing the excavations with lining in anisotropy rock mass. The effect of lining on excavations is analysed. The boundary value problems in anisotropy damage rock mass and anisotropy rock mass including cracks are separately studied.