大同矿区双系特厚煤层相互影响下安全高效开采技术

发布时间：2018-06-24 11:43

本文选题：特厚煤层 + 综合探测　；参考：《煤炭科学技术》2017年08期

【摘要】：针对多煤层开采后当各煤层覆岩裂隙发育联通,采空区间积水、有害气体下泄等问题,以大同矿区双系煤层开采相互影响为工程背景,采用物理相似模拟、现场实测的研究手段确定了双系煤层开采覆岩裂隙联通,在分析确定了大同矿区双系煤层开采覆岩裂隙联通的基础上,针对双系联通带来的上覆采空区积水下泄、双系采空区漏风的技术难题,分别研究了多层采空区积水综合探测和立体排放水技术体系以及双系采空区流场动态平衡多点调控技术与装备,有效解决了上覆侏罗系煤层采空区积水威胁,避免了矿井自燃火灾与工作面有毒有害气体超限问题,保证了矿井的安全高效生产。
[Abstract]:In view of the problems such as the development of cracks in overburden rock of each coal seam, the accumulation of water among the goaf and the release of harmful gas after the mining of multiple coal seams, taking the mutual influence of mining of dual system coal seams in Datong mining area as the engineering background, the physical similarity simulation is adopted. On the basis of analyzing and determining the connection of overlying rock fissure in double-system coal seam mining in Datong mining area, the field measured research means have determined the joint of overlying rock fissure in double-system coal seam mining, aiming at the drainage of water in the overlying goaf brought by double-system coal seam. In this paper, the technical problems of air leakage in double-system goaf are discussed. The technology system of multi-layer goaf hydrops detection and stereoscopic water discharge, as well as the multi-point control technology and equipment of dynamic balance of flow field in double-system goaf are studied respectively. It effectively solves the problem of overlying Jurassic coal seam goaf with stagnant water, avoids the problem of spontaneous combustion in mine and the problem of poisonous and harmful gas exceeding the limit of working face, and ensures the safe and efficient production of mine.
【作者单位】：大同煤矿集团有限责任公司;
【基金】：三晋学者支撑计划资助项目(2050205)
【分类号】：TD823.254

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