水体下综放开采的安全煤岩柱留设方法研究.docVIP

网络出版时间与地址: 2011 － 11 － 15 15: 02;  HYPERLINK http://www/ www. cnki. net / kcms / detail /11. 2402. TD. 1502. 007. html ［编者按］ 水灾是煤矿主要灾害之一，据调查，我国受采空积水区、底板承压含水层、顶板松散层 含水层等各类水体威胁的煤矿占一半以上，矿井防治水工作 形 势 严 峻。2010 年发生重特大突水事故 7 起， 死亡多人。因此做好煤矿防治水工作对矿井的安全生产和资源利用具有重要作用。基于此，本期特开辟矿井 防治水专题，报道了有关防治水工作中取得的先进科技成果和研究中提出的新见解，供同仁界探讨，以推进 我国煤矿防治水科技进步。 水体下综放开采的安全煤岩柱留设方法研究 许延春，刘世奇 ( 中国矿业大学 ( 北京) 资源与安全工程学院，北京 100083) 摘 要: 为了合理留设水体下特厚煤层综放开采的安全煤岩柱，根据实测资料回归得出了适用于综 放开采工作面中硬、软弱覆岩条件下的 “两带” 高度的计算公式，提出了水体下综放开采安全煤 岩柱保护层的 “有效隔水厚度法” 和 “最小安全厚度法” 的留设方法，分别提出防砂安全煤岩柱、 中等富水性水体和强富水性水体防水安全煤岩柱保护层的留设值。在此基础上，完成了水体下综放 开采条件下中硬、软弱覆岩的安全煤岩柱的留设方法。 关键词: 综放开采; 安全煤岩柱; 留设方法; 富水性 中图分类号: 文献标志码: 文章编号: 0253 － 2336 ( 2011) 11 － 0001 － 04 TD823. 83 A Study on Method to Set Safety Coal and Rock Pillar for Fully Mechanized Top Coal Caving Mining Under Water Body XU Yan-chun，LIU Shi-qi ( School of Resources and Safety Engineering，China University of Mining and Technology ( Beijing) ，Beijing 100083，China) Abstract: In order to rationally leave the safety coal and rock pillars under the water body for the fully mechanized top coal caving mining in the ultra thick seam，based on the calculation formula of the two zone heights suitable for the fully mechanized top coal caving mining face under the middle hard and soft weak overburden strata regressively obtained with the site measure information，the left method of the effective water insulated thickness method and the min safety thickness method were provided to the safety coal and rock pillar pro- tective layer for the fully mechanized top coal caving mining under water body． The left value of the sand prevention safety coal and rock pillar and water prevention safety coal and rock pillar protective layer under the middle watery water body and rich watery water body was individually provided． Based on the basis，the left method of the coal and rock pillars under the middle hard and soft weak overburden strata water body was completed for the fully mecha