关键词: 泥质软岩, 反演法, 底鼓, 联合支护, 数值模拟

Abstract: Aiming at the problems such as serious bottom heave and difficult roadway maintenance in No. 1 coal centralized roadway in Danhou Mine, combined with the field measurement data, based on the Mohr-Coulomb strength criterion, the distribution characteristics of in-situ stress field are obtained by inversion method; Method to determine the disturbance scale between the roadway and the coal seam; according to the actual situation of the mine, analyze the mechanism of the roadway heave and determine the type of heave; based on the supporting principle of key parts, a reasonable support scheme is proposed. The numerical simulation results show that the optimized support scheme effectively controls the deformation of the surrounding rock and the heave, and the integrity of the surrounding rock is significantly improved to ensure the safe production of the mine.