Deformation and failure mechanism and control technology of large cross-section goaf roadway in thick coal seam
WANG Hailiang
REN Dongdong
HAN Weidong
HUANG Xiaohu
MA Teng
Abstract：The roadway along the goaf is highly susceptible to deformation,instability,and damage due to multiple mining operations.Taking the 1505W of a coal mine thick coal seam fully mechanized top coal caving mining face as the research background,numerical simulation method was used to explore and analyze the instability and failure mechanism of the surrounding rock of the goaf roadway,and a control plan of"shallow,deep,and surface"of the surrounding rock was proposed.The on-site test results indicate that the proposed control scheme can form a unified whole for the shallow and deep surrounding rocks of the roadway,which can effectively suppress the deformation of the surrounding rocks along the goaf,and improve the stability of the roadway.
Keywords：thick coal seamlarge cross-sectiongoaf roadwaydeformation of surrounding rockoptimize support
Publication Date：2024-04-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 78-83,94 )