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。
Third 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.
出处
《山东国土资源》
2005年第9期77-78,共2页
Shandong Land and Resources
关键词
开采上限
防水防砂技术
防砂煤柱
济宁
何岗煤矿
Mining upper bound
water and sand prevention technology
coal block for preventing sand
Jining city
Hegang coal mine
