Abstract： To explore the village protection coal pillar size and cut the top pressure relief to the surface protection, numerical simulation software of UDEC was used to verify the feasibility of different coal pillar retention schemes. From the perspective of the advanced influence range of mining on the surface, it was considered that the surface settlement could be controlled within a reasonable range by reducing the village protection coal pillar from 200 m to 180 m and cooperating with the roof cutting and pressure relief measures to achieve precise roof fracturing. This study provided reference for other similar mines.
董 飞. 综放工作面顶板精准预裂与村庄保护煤柱留设尺寸研究[J]. 煤炭与化工, 2023, 46(4): 22-24.
Dong Fei. Research on precise pre-splitting of roof and the size of coal pillar for village protection in fully mechanized caving face. CCI, 2023, 46(4): 22-24.
