The engineering background of the centralized belt roadway in the 75 mining area of Wuyang Coal Mine in the overburden of the mining face was taken as study background. The FLAC3D numerical simulation was used to simulate the deformation characteristics and stress distribution of the surrounding rock under different conditions in the overburden. The laws and the failure characteristics of the plastic area were systematically analyzed and studied. It was concluded that as the vertical distance from the working face increased, the horizontal and vertical stresses of the rock masses in each layer showed a decreasing trend, and when the roadway was arranged in the stability in the bending subsidence zone was higher than that in the overburden collapse zone and the fracture zone. At the same time, aiming at the technical problems of weak, broken and difficult support of the surrounding rock in the centralized belt road of Wuyang Mine, a "bolt + anchor cable combined support" surrounding rock control scheme was proposed. After the plan, the maximum moving amount of the top and floor was 200 mm, and the maximum deformation of the two sides was 164 mm. This support scheme can effectively control the deformation of the surrounding rocks of the centralized belt roadway and ensure the stability during its service life.
谢 俊. 顶板不同区域巷道围岩变形规律及稳定性控制技术研究[J]. 煤炭与化工, 2020, 43(1): 9-14.
Xie Jun. Study on deformation law and stability control technology of surrounding rock in different areas of roof. CCI, 2020, 43(1): 9-14.