司马煤矿3^(#)煤层瓦斯预抽技术研究  

Research on Gas Pre-drainage Technology in No.3 Coal Seam of Sima Coal Mine

作　　者：宋虎森 王迁 张锋刚 SONG Husen;WANG Qian;ZHANG Fenggang

机构地区：[1]山西潞安集团司马煤业有限公司,山西长治047100

出　　处：《山西焦煤科技》2021年第11期4-9,共6页Shanxi Coking Coal Science & Technology

摘　　要：为解决司马煤矿3^(#)煤层含气量较低,瓦斯解吸能力弱,透气性差,瓦斯抽采难度大,抽采量少,抽采浓度低等问题,对巷道漏气带以及钻孔漏气圈进行了研究,并综合对比分析了气囊封孔工艺与囊袋封孔工艺的抽采效果。结果表明,钻孔最大应力出现深度与抽采时间呈线性正相关,囊袋封孔工艺所需材料简单,并且抽采最大瓦斯浓度是气囊封孔工艺的1.45倍,平均抽采浓度是气囊封孔的1.59倍。结合现场实际抽采时间要求,3^(#)煤层钻孔封孔长度不小于16 m,封孔工艺选择囊袋封孔。In order to solve the problems of low gas content in the No.3 coal seam of Sima Coal Mine,weak gas desorption capacity,poor air permeability,difficulty in gas extraction,low extraction volume,and low extraction concentration,roadway gas leakage belt and roadway leakage ring are studied in the paper,and the drainage effect of the airbag sealing process and the bladder-shaped sealing process are comprehensively compared and analyzed.The results show that the maximum stress occurrence depth of the borehole is linearly positively correlated with the drainage time,the materials required for the bladder shaped sealing process are simple,and the maximum gas concentration for drainage is 1.45 times that of the airbag sealing process,and 1.59 times for the average drainage concentration.In combination with the actual extraction time requirements on site,the length of the No.3 coal seam drill hole sealing should not be less than 16 m,and the sealing process should be bladder shaped sealing.

关 键 词：瓦斯抽采 巷道漏气带 钻孔漏气圈 封孔深度 封孔工艺 

分 类 号：TD712.6[矿业工程—矿井通风与安全]