深井大采高近距离煤层蹬空开采矿压实测规律研究  

Measurement Study on Stress of Short Distance Coal Seams in Deep Shaft Mining above Hollow

作　　者：刘超军 宋天奇[2] 齐文跃[2] 孔国强[2] 王军[2] 

机构地区：[1]阳煤集团新景煤矿,山西阳泉045000 [2]中国矿业大学矿业工程学院,江苏徐州221008

出　　处：《煤炭技术》2017年第3期24-27,共4页Coal Technology

摘　　要：针对深部近距离煤层群在蹬空开采条件下,动压巷道受多次采掘影响、变形严重、难以支护和维护等技术难题,采用现场实测分析的方法,通过对安徽省某矿1282(3)工作面采场及两巷矿压进行了实测研究。结果表明,当留设180 m大巷保护煤柱时,初采期间老顶来压程度不均匀;停采前,风巷超前支承压力影响区范围在煤壁前方140 m左右,支承压力剧烈影响区在煤壁前方22 m左右。停采50 d后,大巷的变形速率逐渐稳定,保证了矿井高效安全生产。For deep mining under the condition of close distance coal seam group above hollow, roadway influenced by multiple mining dynamic pressure, serious deformation, difficult to support and maintenance and other technical problems, by the method of in-situ test through a study on the measured pressure of the 1282（3） working face and two lane of a coal mine in Anhui province. The results show that when protecting 180 m pillar by main roadway, during the period of beginning miningthe level of main roof weighting is uneven. Before stopping coal mining, the return-air way abutment pressure zone around 140 m ahead of the coal wall, abutment pressure drastically affected area ahead of the coal wall around 22 m. Stop after 50 days, main roadway deformation rate stable gradually, to ensure the high-efficiency and safe production of the mine.

关 键 词：蹬空开采 支架阻力 巷道位移 停采线 

分 类 号：TD823.81[矿业工程—煤矿开采]