上层煤回采后重复开采下层煤时地表岩层移动参数分析

Parameter Analysis on Surface Rock Movement in the Repeated Mining of Lower Coal after Upper Coal Mining

经对东曲矿14402工作面岩层移动观测站的观测、分析,总结了上层煤回采后重复开采下层煤时地表岩层的移动规律和实践经验,能为今后煤矿村庄保护煤柱的留设提供了宝贵的基础数据。

working face of in the repeated future layout of Through the observation and analysis of rock Dongqu Mine, the study summarizes the surface mining of lower coal after upper coal mining, building protection coal pillars under villages. movement observation station at No.14402 rock movement law and practice experience which provides precious basic data for the