河流下断层煤柱区残采工作面安全开采分析  

Safety Mining Analysis of Residual Mining Working Face in Coal Pillar Area Around Fault under River

作　　者：张玉军[1] ZHANG Yu-jun(Coal Mining ＆ Designing Department, Tiandi Science ＆ Technology Co. , Ltd. , Beijing 100013, China)

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤矿开采》2016年第5期64-67,共4页Coal Mining Technology

基　　金：中国煤炭科工集团资助项目:半固结砂岩含水层下采煤突水溃砂机理及防治(2014MS004)

摘　　要：以权家河煤矿河流下断层煤柱区残采回采为例, 在分析确定5329 残采工作面覆岩类型的基础上, 预计了断层存在条件下的导水裂缝带高度, 对地面河流和第四系含水层这一复合水体留设了防水安全煤岩柱, 并确定了合理开采厚度, 根据河流与工作面、断层的空间关系, 在回采的不同阶段留设了不同的断层煤柱.研究结果表明 针对5329 工作面埋深浅的条件, 采高控制在2. 3m 的条件下能满足留设防水煤柱岩柱的要求; 在距切眼120m 阶段, 开采该阶段需要留设的断层煤柱尺寸不小于21m, 120 ~ 停采线阶段, 需要留设的最小断层煤柱尺寸为72. 5m, 才能保证安全回采.It taking residual mining of coal pillar area around fault under river of Quanjiahe coal mine, and overburden types of 5329residual working face were determined, then water flowing fractured zone height under fault situation was predicted, water proof safetycoal and rock pillar was arranged under compound water situation, which include surface river and the Quaternary aquifer, reasonablemining thickness was determined, according spacial position relation of river, working face and fault, different size fault coal pillarwas arranged in different mining step. The research showed that based on the shallow mining depth of 5329 working face, miningheight kept as 2. 3m, then the demand that water proof coal and rock pillar could be meet, when during the step that to open-off cut about120m, fault coal pillar size during mining step not less than 21m, when the step to 120m to mining stop line, the minimal coalpillar size is 72. 5m, then mining safety could be guaranteed.

关 键 词：河流下 断层煤柱 残采工作面 安全性 

分 类 号：TD823.83[矿业工程—煤矿开采]