Rapid modeling of space structure of rock mass and the method of equivalent assignment

Abstract

Accurately grasping the spatial distribution characteristics of fractures is an important basis for computation and analysis of rock engineering. On the basis of field investigation, probability statistics, and numerical simulation, the fast modeling method of fracture with special probability and statistical distribution is proposed. The server connection between COMSOL and MATLAB is established. In the COMSOL with MATLAB programming environment, the fast modeling program of fissure space structure is developed. Aiming at the difficulty of mesh generation due to high fracture aspect ratio, programming language was used to interpolate the material parameters of fissure space structure and construct the equivalent assignment method of fissure space structure. Based on the field fracture investigation in an underground mine, probabilistic data analysis of fracture data is carried out, and the fast modeling and equivalent assignment method is applied to realize the efficient modeling and assignment for the field investigation of fissure spatial structure.

Analysis of fractures of a hard rock specimen via unloading of central hole with different sectional shapes

“…Because a large amount of energy is stored in the hard rockmass, the excavation unloading of deep tunnels and chambers will lead to stress redistribution and concentration, which create favorable conditions for rock fracturing and instability . In situ measurements have shown extremely unconventional failure phenomena in deep mining and tunneling engineering such as slabbing, zonal disintegration, and rockburst, which are of great threats to safe and efficient underground construction and activity . Therefore, it is necessary to gain better insight into the failure characteristics and mechanism response of hard rock around deep tunnels…”

Study on bearing capacity characteristics of steel structure support in soft rock roadway

“…Based on the experience of roadway supporting engineering in Mengnuo lead-zinc mine, this paper discusses the bearing characteristics of different supporting steel frame structures. [20][21][22] The main conclusions are as follows:…”