厚煤层一次采全高煤壁失稳分析及控制技术  

Analysis and Control Technology of Instability of Full Height Coal Wall in One Mining of Thick Coal Seams

作　　者：穆成 Mu Cheng(Shanxi Wangjialing Coal Industry Co.,Ltd.,Baode Shanxi 036604,China)

机构地区：[1]山西王家岭煤业有限公司,山西保德036604

出　　处：《山西冶金》2023年第9期221-223,共3页Shanxi Metallurgy

摘　　要：31103大采高工作面一次开采高度为6.5 m,在回采期间受煤体松软以及采高大影响,采面煤壁片帮问题较为明显,在一定程度上制约了采面安全高效回采。对采面煤壁失稳分析基础上,采用数值模拟技术对影响煤壁失稳的因素进行分析,并结合现场情况,从增加采面液压支架工作阻力、液压支架上增设三级护帮板以及采面煤壁注浆等方式提高煤壁稳定性,对采取的煤壁稳定性控制技术进行详细分析,现场应用后31103大采高工作面煤壁片帮问题得到解决。The one-time mining height of the 31103 high mining height working face is 6.5 meters.During the mining period,due to the influence of the soft coal body and high mining height,the problem of coal wall spalling on the mining face is more obvious,which to some extent restricts the safe and efficient mining of the mining face.On the basis of analyzing the instability of the coal wall in the mining face,numerical simulation technology is used to analyze the factors that affect the instability of the coal wall.Combined with the on-site situation,the stability of the coal wall is improved by increasing the working resistance of the hydraulic support in the mining face,adding a three-level protective plate on the hydraulic support,and grouting the coal wall in the mining face.A detailed analysis is conducted on the adopted control technology for the stability of the coal wall.After on-site application,the problem of coal wall spalling in the 31103 high mining face has been solved.

关 键 词：厚煤层 大采高工作面 煤壁失稳 控制技术 

分 类 号：TD823.253[矿业工程—煤矿开采]