旺格维利开采时刀间煤柱合理宽度的模拟研究探讨  

Discussion on Simulation Research of Reasonable Width of Coal Pillar Between cutters in Wangweili Mining

作　　者：于松松 Yu Songsong(Xiegou Coal Mine of Shanxi Xishan Jin Xing Energy Co.,Ltd.Lvliang Shanxi 033602,china)

机构地区：[1]山西西山晋兴能源有限责任公司斜沟煤矿,山西吕梁033602

出　　处：《同煤科技》2022年第1期27-30,共4页Datong Coal Science & Technology

基　　金：国家自然科学基金资助项目:基于数据挖掘的煤矿安全可视化管理模型及图元体系研究,编号:61471362;国家自然科学基金:深井开采原岩内部及其与风流的固-液-气三相耦合传热换湿热害形成机理研究,编号:51274115。

摘　　要：针对斜沟煤矿煤柱回收率低且开采导致地表下沉的问题,在斜沟煤矿18114旺采工作面实施条带式旺格维利采煤法,利用传统的刀间煤柱宽度的计算方法,采用两种煤柱留设方案,并通过FLAC^(3D)软件研究宽度不同的刀间煤柱塑性区、巷道变形量及围岩应力情况。现场试验表明:每4个刀间小煤柱留设1个刀间大煤柱的开采方法可靠、稳定性较强,保证了安全高效回采,经济效益显著。Aiming at the low recovery rate of coal pillars and the ground subsidence caused by mining in Xiegou coal mine, the strip Wangweili coal mining method was implemented in the 18114 working face of Xiegou coal mine,using the traditional calculation method of coal pillar width between cutters, two coal pillar retention schemes, and FLAC3D software to research the plastic zone of coal pillar between cutters with different widths, roadway deformation and surrounding rock stress. The field test shows that the mining method of one large coal pillar between each four cutters is reliable and stable, which ensures safe and efficient mining and has remarkable economic benefits.

关 键 词：旺格维利采煤法 塑性区 刀间煤柱 失稳 位移 

分 类 号：TD822[矿业工程—煤矿开采]