沿空留巷巷旁支护体最优宽度研究

Study on the optimal width of side support body along gob side entry

以济宁三号煤矿183_上04工作面为工程背景,建立了沿空留巷巷旁支护体力学模型,并利用FLAC数值模拟软件对沿空留巷巷旁支护体宽度进行研究。通过对不同宽度巷旁支护体围岩应力、顶底板及两帮变形量分析,确定了留巷巷旁支护体最优宽度。

Based on the engineering background of upper 183-04 work face of Jining No.3 Mine, a mechanical model of roadway side support along gob was established, and the width of roadway side support along gob was studied by using FLAC numerical simulation software.Based on the analysis of surrounding rock stress, the deformation of roof and floor and two sides of roadway side support with different widths, the optimum width of roadway side support was determined.