摘要
山西豹子沟矿主采的9+10+11号为组合煤层,采用综放开采,其采空区空间较大、矿压规律复杂、支架选型困难。针对以上问题,采用UDEC数值模拟对10103工作面覆岩运动及矿压规律进行研究,得出工作面初步来压步距50 m,周期来压步距10 m;建立组合煤层支架围岩力学模型,理论计算得到液压支架工作阻力应大于550669kN,为相似地质条件下的支架选型提供借鉴经验。
The main mining area of the Baozigou Mine in Shanxi is the 9+10+11 combined coal seam,which adopts fully mechanized caving mining.The goaf space is large,the mining pressure law is complex,and the model selection of support is difficult.Aiming at the above issues,UDEC numerical simulation is used to study the overlying rock movement and mine pressure law of the 10103 working face,the preliminary pressure step distance of the working face is 50 m,and the periodic pressure step distance is 10 m;Establish a mechanical model for the surrounding rock of the combined coal seam support,and theoretically calculate that the working resistance of the hydraulic support should be greater than 550669 kN,providing reference experience for support model selection under similar geological conditions.
作者
王鑫海
Wang Xinhai(Shanxi Coal Import and Export Group Puxian Baozigou Coal Industry Co.,Ltd.,Shanxi Linfen 041200)
出处
《山东煤炭科技》
2023年第6期138-140,共3页
Shandong Coal Science and Technology
关键词
组合煤层
数值模拟
理论计算
支架选型
combined coal seam
numerical simulation
theoretical calculation
support model selection
作者简介
王鑫海(1995-),男,山西河津人,2020年毕业于东北大学采矿工程专业,本科,助理工程师,现从事矿井通风生产工作。
