To solve the problem of deformation control of concentrated main roadways under mining influence, No. 22104 Face of Yaping Mine was taken as the engineering background in this paper. Combined with theoretical analysis and numerical simulation methods, the instability and deformation mechanism of concentrated main roadways as well as the layout position of pressure relief roadways were systematically analyzed. The research results showed that the protective coal pillars of main roadways on the goaf side were subjected to long-term residual stress and suffered plastic failure. Secondary fracture of overlying strata was induced, and large deformation was thus generated in concentrated main roadways. Accordingly, a mechanical model of pressure relief roadways was established, and the relational expressions for the load and limit width B of bearing coal pillars were derived. A FLAC3D numerical model was built to analyze the stress field and energy field, and the reasonable width of bearing coal pillars was determined to be 15 m. Relevant theoretical references were provided by this study for similar mines.
田 野1，刘吟苍2，王向鹏1. 采动影响下大巷卸压机理及承载煤柱留设研究[J]. 煤炭与化工, 2026, 49(6): 8-13，22..
Tian Ye1, Liu Yincang2, Wang Xiangpeng1. Study on pressure relief mechanism of main roadways and retention of bearing coal pillars under mining influence. CCI, 2026, 49(6): 8-13，22..
