高抽巷的合理空间层位及抽采效果分析

发布时间：2018-07-22 21:07

【摘要】：为解决综放面、采空区及上隅角瓦斯频繁超限问题,以五阳煤矿7603综放面为工程背景,提出了高抽巷抽采瓦斯方案,通过理论计算得到高抽巷与煤层顶板垂直距离为35m,与回风巷水平距离为40m;利用数值模拟对5种方案下瓦斯抽采效果进行分析,得到当高抽巷位于层位2时,即S=40m,H=35m时瓦斯抽采效果最好,上隅角和回风巷瓦斯浓度为0.5%~0.7%;工业性试验结果表明:正常生产期间回风巷瓦斯浓度在0.5%~0.6%范围内,上隅角瓦斯浓度在0.6%~0.8%范围内,瓦斯浓度能够控制在0.8%以内,保证了7603综放面正常安全高效生产,为类似条件工作面回采提供指导。
[Abstract]:In order to solve the problem of frequently exceeding the limit of gas in fully mechanized caving face, goaf and upper corner, taking 7603 fully mechanized caving face of Wuyang Coal Mine as the engineering background, the scheme of gas drainage in high roadway is put forward. Through theoretical calculation, the vertical distance between high drainage roadway and coal seam roof is 35 m, and the horizontal distance between high drainage roadway and return air roadway is 40 m.The results of gas extraction under five schemes are analyzed by numerical simulation, and it is obtained that when high drainage roadway is located at level 2, The results of industrial test show that the gas concentration in return air lane is in the range of 0.5 ~ 0.6% during normal production, and the gas concentration in upper corner is 0.8%, and the gas concentration in upper corner is within 0.8% of the gas concentration in the upper corner during normal production, the concentration of gas in the return air lane is in the range of 0.5 ~ 0.6%, and the gas concentration in the upper corner is in the range of 0.8%. The gas concentration can be controlled within 0.8%, which ensures the normal, safe and efficient production of 7603 fully mechanized caving face, and provides guidance for the mining of similar working face.
【作者单位】：中国矿业大学矿业工程学院;中国矿业大学煤炭资源与安全开采国家重点实验室;
【基金】：煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM11X02)
【分类号】：TD712.6

【相似文献】