Research On The 3D-FSM·DDM IBEM Numerical System And Applications In Mining Engineering

Compared with the Finite Element Method (FEM), the Boundary Element Method (BEM) has many advantages, such as decreasing data input quantity, reducing the dimensions of the question, occupying the fewer computer memory, saving the time of computation, having the higher computation precision and solving continuous field point. It is established strictly to the infinite field question. So the BEM has the superiority to many actual problems, especially for the far field Rock and Soil engineering projects.This article has consummated the elastic 3D-FSM·DDM IBEM numerical simulation system more completely based on the results which is researched and developed by the predecessors. And it also has researched and developed several 3D-FSM·DDM numerical simulation subsystem, i.e. the multi-medium 3D-FSM·DDM numerical simulation subsystem; the 3D-FSM·DDM coupling IBEM analysis subsystem with considering the joint slip and separation; the initial ground stress back analysis method and usable program based on the 3D-FSM IBEM with considering the influence of terrain and tectonic stress; the 3D-FSM·DDM BEM preprocessing subsystem and post-processing subsystem adapting to the master program of 3D-FSM·DDM IBEM numerical system.It has been proved that the 3D-FSM·DDM IBEM numerical simulation system is reliable and has high computing precision through the comparison and confirmation of many numerical examples and actual underground engineering. It has a strong applicability for the engineering problems, such as, the multi-medium question; the discontinuous rock-mass question which including joints, faults, cavities and so on; the far field initial ground stress forecasting, etc.. The research results have the extensive application prospect in the rock and civil engineering, especially in underground engineering numerical analysis. The result has higher academic value and actual appliance foreground.When the 3D-FSM·DDM IBEM numerical simulation system is consummated, it will be a large-scale application software of 3D-BEM with the independent intellectual property rights. It will make the contribution to the correlation research and the application.