急倾斜特厚煤层综放工作面埋管抽采效果分析

发布时间：2018-02-02 10:48

本文关键词： 急倾斜特厚煤层综放工作面埋管抽采　出处：《煤炭科学技术》2017年S1期 　论文类型：期刊论文

【摘要】：针对乌东煤矿+575 m水平43号煤层西翼工作面回采期间瓦斯治理问题,根据现场实测的瓦斯浓度、流量、抽采负压及一氧化碳浓度等对工作面回采期间采空区埋管抽采情况进行分析。结果表明:工作面在回采过程中采取采空区埋管进行瓦斯治理能明显降低工作面回风及上隅角的瓦斯浓度,采空区埋管抽采措施对工作面瓦斯治理效果显著。通过对采空区埋管长度分析,得出43号煤层工作面采空区埋管浅管合理深度为10~50 m,深管合理深度不能超过100 m,通过深管、浅管交替迈步式埋设,更有利于控制采空区火灾。研究结果对乌东煤矿今后的瓦斯抽采参数设计具有重要指导作用。
[Abstract]:In view of the gas treatment problem during the mining of west wing coal face of coal seam No. 43 at 575m level in Wudong Coal Mine, according to the gas concentration and discharge measured on the spot. The suction negative pressure and carbon monoxide concentration are used to analyze the mining situation of buried pipe in goaf during mining. The results show that:. In the process of mining, the gas concentration in the upper corner and the return air of the face can be obviously reduced by adopting the buried pipe in the goaf to control the gas. By analyzing the length of buried pipe in goaf, it is concluded that the reasonable depth of shallow pipe buried in goaf of No. 43 coal face is 1050 m. The reasonable depth of the deep pipe should not exceed 100 m, through the deep pipe, the shallow pipe alternately steps the type to bury. The research results are helpful to the design of gas drainage parameters in Wudong Coal Mine in the future.
【作者单位】：神华集团有限责任公司;
【分类号】：TD712.6
【正文快照】： Gas drainage effect analysis of buried pipes in steeply inclined thick coalseam fully-mechanized caving faceLiu Zhongquan(Shenhua Group Corporation Ltd.,Beijing 100013,China)0引言矿井采空区瓦斯涌出量占全矿井瓦斯涌出量的20%~30%,少数矿井为50%~60%,因此,采空

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