摘要
In the mining process of coal mine,waterproof coal pillars should be set between the weathered oxidation zone and the first mining face.In order to determine the reasonable upper limit of the first mining face of Hongyi Coal Mine,the waterproof coal pillar needs to be wide enough to resist the lateral hydrostatic pressure of the oxidation zone,and to ensure that the top plate aquifer does not run through the water guide crack zone,while also liberating as much stagnant coal as possible.In this paper,the first coal mine face’s waterproof coal pillar was calculated using conventional and optimized calculation methods,taking into account the dip angle of the coal seam,the height of the water-guide crack zone,and the rock shift influence zone,and finally the upper limit of the first face of Hongyi Coal Mine was determined.
基金
the Open Fund of State Key Laboratory of Water Resource Protection and Utilization in Coal Mining(Grant No.GJNY-18-73.15)
the National Natural Science Foundation of China(NSFC)under grant No.41602254
the National Natural Science Foundation of China(NSFC)under grant No.41807221
the Science and Technology Innovation Project of Northwest A&F University,the Double-Class Discipline Group Dry Area Hydrology and Water Resources Regulation Research funding project(Z102022011)
the Special Funding Project for Basic Scientific Research Business Fees of Central Universities(2452016179).
