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巷道长壁采煤法在白狐沟矿的管理应用 被引量:3
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作者 郝根雄 《内蒙古煤炭经济》 2006年第7期114-115,共2页
在煤层厚度≥2m,倾角≥40°时采用巷道长壁采煤法的经验及今后改进设想。
关键词 巷道长壁采煤 回采率 安全
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巷道长壁深孔爆破采煤方法的实践 被引量:2
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作者 张成庆 王瑞 《煤矿安全》 CAS 北大核心 2002年第10期38-40,共3页
鹤岗矿务局兴山矿根据煤层厚、倾角大的特点 ,积极引进巷道长壁深孔爆破采煤法 ,并结合本矿的生产实际 ,制定出有针对性的安全措施 ,取得了良好的经济效益 ,为复杂区、大倾角。
关键词 厚煤层 巷道长壁采煤 深孔爆破 煤层 赋存条件 地质构造
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Coal bursts in the deep longwall mines of the United States 被引量:21
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作者 Christopher Mark 《International Journal of Coal Science & Technology》 EI 2016年第1期1-9,共9页
Coal bursts involve the sudden, violent ejection of coal or rock into the mine workings. They are a particular hazard because they typically occur without warning. During the past 2 years three US coal miners were kil... Coal bursts involve the sudden, violent ejection of coal or rock into the mine workings. They are a particular hazard because they typically occur without warning. During the past 2 years three US coal miners were killed in two coal bursts, following a 6-year period during which there were zero burst fatalities. This paper puts the US experience in the context of worldwide research into coal bursts. It focuses on two major longwall mining coalfields which have struggled with bursts for decades. The Utah experience displays many of the "classic" burst characteristics, including deep cover, strong roof and floor rock, and a direct association between bursts and mining activity. In Colorado, the longwalls of the North Fork Valley (NFV) also work at great depth, but their roof and floor strengths are moderate, and most bursts have occurred during entry development or in headgates, bleeders, or other outby locations. The NFV bursts also are more likely to be associated with geologic structures and large magnitude seismic events. The paper provides a detailed case history to illustrate the experience in each of these coalfields. The paper closes with a brief discussion of how US longwalls have managed the burst risk. 展开更多
关键词 Underground mining COAL BURST LONGWALL Strata control
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Analysis for interaction of supports and surrounding rock of gateways in longwall minging
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作者 伍永平 《Journal of Coal Science & Engineering(China)》 2001年第2期30-35,共6页
Gateway supporting in long wall mining has been a problem that restricts the mine production and safety, the paper sets up an interaction model between support and surrounding rock (rock mass structure) and probes the... Gateway supporting in long wall mining has been a problem that restricts the mine production and safety, the paper sets up an interaction model between support and surrounding rock (rock mass structure) and probes the elementary theory about ground pressure behaviors of gateway. Based on the analysis of supporting theories, some new viewpoints about gateways supporting and ground pressure controlling are put forward. 展开更多
关键词 support surrounding rock INTERACTION GATEWAY long wall mining
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