条带开采煤柱长时效应分析及置换开采方式研究  

Study on Long Time Effect and Replacement Mining Method for Coal Pillar in Strip Mining

作　　者：邵小平[1] 丁自伟[1] 尉迟小骞 张杰[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《煤炭工程》2015年第8期57-59,63,共4页Coal Engineering

基　　金：陕西省教育厅科研计划项目资助(13JS064);国家自然科学基金项目资助(51204133);西安科技大学培育基金(201350);西安科技大学博士启动基金(2014QDJ033)

摘　　要：陕北榆阳区地方中小煤矿老式房柱式开采煤柱稳定性存在较大安全隐患,可能影响煤柱后期的置换开采,基于此,通过对煤柱长时效应进行分析,指出现阶段"采12留8"窄条带开采煤柱的长期稳定性优于房柱式开采的矩形煤柱,并给出了条带煤柱置换开采的工作面通风方法和充填方式,提出了前进式充填后退式煤柱置换的开采方式,为陕北中小煤矿保水开采煤柱的稳定性及提高回采率提供了一种新思路。The old room and pillar mining methods, commonly used in medium and small coal mines in Yuyang district of northern Shaanxi province, has potential safety hazard, which may affect the replacement mining of coal pillars. Based on the long time effect analysis of coal pillars, the paper pointed that the long - term stability of narrow coal pillar in ＂mining 12 remaining 8＂ was better than that of rectangular coal pillar in room and pillar mining. A working face ventilation method of replacement mining and a filling method were introduced, and a mining way was proposed with advancing filling and backing coal pillar replacement. The study provided a new idea for ensuring the coal pillar stability and recovery rate of water- preserved mining in medium and small coal mines in northern Shaanxi province.

关 键 词：条带开采 保水开采 煤柱长时效应 煤柱置换 前进式充填 

分 类 号：TD823.7[矿业工程—煤矿开采]