济宁何岗煤矿风化氧化带内煤层安全开采之探讨

Study on Mining Coal Strata Safely in Weathering and Oxidation Belt of Hegang Coal Mine in Jining City

摘要:

济宁何岗煤矿一采区3煤在风化氧化带内,对其开采的防水防砂基本技术思路是:施工水文观测孔,观测回采后对第四系下组含水层的影响程度,为提高开采上限打好基础;并控制采高,加强顶板管理,控制顶板在工作面斜长方向上的不均匀冒落,以确保安全开采。

Abstract:

hird coal stratum of Hegang coal mine occurs in weathering and oxidation belt.Basic technical thoughts for preventing water and sand during mining period are as follows: building hydro-observation well,observing effect degree to Quaternary water-bearing layer after stoping,setting a good basis for promoting mining upper bound,controlling mining depth,strengthening roof management,and controlling differential roof collapse in oblique backwell.Thus, safe mining can be guaranteed.