特厚煤层综放工作面回采期间瓦斯抽采效果及分析
张志刚,刘俊,郑三龙,等.特厚煤层综放工作面回采期间瓦斯抽采效果及分析[J ].矿业安全与环保,2016,43（6）：63-66.文章编号:1008-4495（2016）06-0063-04特厚煤层综放工作面回采期间瓦斯抽采效果及分析
张志刚1,2,刘 俊1,2,郑三龙3,刘 军1,2
(1.瓦斯灾害监控与应急技术国家重点实验室,重庆400037;2.中煤科工集团重庆研究院有限公司,重庆400037;3.神华新疆能源有限责任公司乌东煤矿,新疆乌鲁木齐830002)
摘要:针对乌东煤矿5754502工作面回采期间瓦斯治理问题,根据井下实测瓦斯抽采数据对工作面回采期间采空区埋管抽采和顶板走向高位钻孔抽采情况进行分析,结果表明：采取采空区埋管和顶板走向高位钻孔进行瓦斯抽采能明显降低工作面回风巷及上隅角的瓦斯浓度,特别是采空区埋管抽采措施对工作面瓦斯治理效果显著三通过对采空区埋管长度进行分析,得出45#煤层工作面采空区埋管合理深度为10~35m ,建议尽量不要超过35m ,最多不能超过100m ,以利于控制采空区火灾三
关键词:特厚煤层；综放工作面；采空区埋管；高位钻孔；瓦斯抽采；效果分析
中图分类号:TD712 文献标志码:B 网络出版时间:2016-12-0620:17
网络出版地址:http ：／／https://www.360docs.net/doc/0212233786.html, ／kcms ／detail ／50.1062.TD.20161206.2017.028.html
收稿日期:2016-02-29；2016-10-19修订
作者简介:张志刚（1978 ）,男,山西忻州人,博士,研究
员,主要从事煤层气开发及瓦斯治理方面的研究工作三Analysis of Gas Drainage Effect during Mining of Fully Mechanized Caving Face of Extra-thick Coal Seam
ZHANG Zhigang 1,2,LIU Jun 1,2,ZHENG Sanlong 3,LIU Jun 1,2（1.State Key Laboratory of Gas Disaster Monitoring and Emergency Technology ,Chongqing 400037,China ；2.China Coal Technology and Engineering Group Chongqing Research Institute ,Chongqing 400037,China ；
3.Wudong Coal Mine of Shenhua Xinjiang Energy Co.,Ltd.,Urumchi 830002,China ）
Abstract ：To aim at the gas control problem in the mining process of 5754502working face in Wudong Coal Mine,analysis was made in this paper on the gas drainage by the buried pipes in the gob and the high-location boreholes along roof strike in the mining period of the face according to the actual gas drainage data.The results showed that the gas drainage by both the buried pipes in the gob and the high-location boreholes along roof strike can remarkably reduce the gas concentration in the air-return way and at the upper corner angle of the face,especially the gas drainage by buried pipes in the gob,it can make the gas in the face to be under effective control.Through the analysis on the length of the buried pipe in the gob,it was concluded that the reasonable depth of the buried pipe in the gob of 45#coal seam face should be 10to 35m,it should not be more than 35m and not be more than 100m at most so as to facilitate the fire control in the gob.
Keywords ：extra-thick coal seam；fully mechanized caving face；pipeline buried in gob；high -location borehole；gas drainage；effectiveness analysis 乌东煤矿为高瓦斯矿井,主采43#二45#煤层,均
为急倾斜特厚煤层,平均煤层倾角45?三根据该矿提
供的实测瓦斯抽采数据（瓦斯浓度二抽采流量二抽采
负压及CO 浓度等）,对工作面回采期间采空区埋管
抽采和顶板走向高位钻孔抽采情况进行分析,根据
分析结果对目前矿方采取的瓦斯抽采措施参数进行
优化,并提出相关建议三
1 工作面基本情况1.1 工作面概况乌东煤矿5754502工作面位于矿井副井以西,工作面东部为+575m 水平45#煤层东翼工作面,南部为45#煤层顶板,北部为45#煤层底板,上部为+600m 水平45#煤层西翼工作面采空区,下部为45#煤层实体煤三5754502工作面位于+575m 水平,其走向可采长度1124.0m,倾向长度30.6m,设计阶段高度25m,机采高度3m,放煤高度22m,终采线位置距四36四第43卷 第6期2016年12月 矿业安全与环保MINING SAFETY ＆ENVIRONMENTAL PROTECTION Vol.43No.6Dec.2016万方数据