特厚煤层综放工作面沿空巷道合理煤柱宽度与围岩控制  

Narrow Coal Pillar Width and Surrounding Rock Control of Gob-side Entry Driving with Extra-thick Coal Seam by Fully Mechanized Mining Face

作　　者：李生鑫 杜朝阳 翟春佳 LI Shengxin;DU Zhaoyang;ZHAI Chunjia(Datong Coal Mine Group Madaotou Coal Industry Co., Ltd., Datong 037003, China;College of Resource and Safety Engineering, China University of Mining ＆ Technology （Beijing）, Beijing 100083, China)

机构地区：[1]大同煤矿集团马道头煤业有限责任公司,山西大同037003 [2]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2018年第5期147-150,共4页Safety in Coal Mines

摘　　要：煤柱宽度是影响特厚煤层综放沿空掘巷围岩稳定的重要因素。以马道头煤矿8211工作面回风平巷为工程背景,通过理论分析和数值模拟研究了煤柱的合理宽度,确定煤柱宽度为8m。分析了窄煤柱情况下沿空巷道围岩的控制难点,结合现场实际生产地质条件综合确定了不对称支护方案。现场试验表明,综放沿空巷道围岩控制效果好,具有较好的经济效益和社会效益。The width of coal pillar is an important factor affecting the stability of surrounding rock of gob-side entry driving with extra-thick coal seam by full-mechanized mining. Taking the return airway of 8211 working face as engineering background, the reasonable width of coal pillar was studied through theoretical analysis and numerical simulation, and the pillar width was determined as 8 m. The controlling difficulty of surrounding rock in gob-side entry driving was analyzed under the narrow coal pillar. The asymmetric support scheme was confirmed by combining the actual productive geological conditions. The field test shows that the control effect of the surrounding rock is good, and it has good economic and social benefits.

关 键 词：特厚煤层 沿空掘巷 窄煤柱 不对称支护 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]