杜家沟矿20101工作面底抽巷瓦斯抽采技术研究  

Study on Gas Drainage Technology of Bottorn Drainage Roadway in 20101 Working Face of Dujiagou Mine

作　　者：赵红敏 Zhao Hongmin(Hejin Dujiagou Coal Industry Co.,Ltd.,Huozhou Coal Electricity Group Co.,Ltd.,Huozhou Shanxi 031400)

机构地区：[1]霍州煤电集团河津杜家沟煤业有限责任公司,山西霍州031400

出　　处：《山西冶金》2022年第2期79-81,共3页Shanxi Metallurgy

摘　　要：为解决厚煤层巷道瓦斯难抽的问题,以杜家沟矿20101工作面为研究背景,利用数值模拟软件对不同底抽巷布置方案下巷道应力云图进行分析,确定了当垂距为12 m、底抽巷布置于粉砂岩中时的底抽巷布置方案;并通过对20101工作面进行底抽巷布置,对钻孔冲孔前后瓦斯抽采曲线进行分析发现,底抽巷钻孔经过水力冲孔后抽采效率极佳,此研究为厚煤层瓦斯抽采提供了一定的参考。In order to solve the problem of difficult gas extraction in thick coal seam roadway,this paper takes the working face 20101 of Dujiagou mine as the research background,and analyzes the stress cloud map of the roadway under different bottom drainage roadway arrangement schemes by using numerical simulation software.The layout scheme of bottom drainage roadway when the vertical distance is 12m and the bottom drainage roadway is arranged in siltstone is determined.At the same time,the effective radius of the bottom drainage tunnel drilling increases with the time of pumping,but it is not related to the negative pressure of the extraction.Through the layout of the bottom drainage roadway in the 20101 working face,the gas extraction curve before and after the drilling and punching is analyzed,it is found that the efficiency of the bottom drainage tunnel after hydraulic punching is excellent,which provides a reference for the gas extraction in thick coal seam.

关 键 词：综掘煤巷 底抽巷 水力冲孔 卸压带 抽放参数 

分 类 号：TD712[矿业工程—矿井通风与安全]