董家河煤矿综采工作面瓦斯抽采方案设计  

Gas Drainage Plan Design of Fully Mechanized Working Face in Dongjiahe Coal Mine

作　　者：李树刚[1] 赵勇[1] 许满贵[1] 双海清 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《煤炭工程》2015年第6期11-13,共3页Coal Engineering

基　　金：国家自然科学基金资助项目(51174157);陕西省自然科学基础研究计划基金资助项目(2011JQ7015)

摘　　要：介绍了董家河矿煤层赋存及22518工作面状况，分析了工作面瓦斯涌出规律，针对性的提出以工作面采用交叉钻孔强化预抽、边采边抽，以及工作面回风巷布置高位钻孔抽采上覆邻近煤层卸压瓦斯为主要抽采方法；工作面上隅角埋管抽采空区瓦斯为备用抽采方法。对抽采效果进行检验，测得抽采后的残存瓦斯含量平均值为2．4m^3／t，可解吸瓦斯含量为0．65～1．12m^3／t，两个指标均满足《煤矿瓦斯抽采达标暂行规定》要求的6m^3／t。The occurrence of coal seam in Dongjiahe and the condition of 22518 working face were introduced. The law of gas outflow in working face was analyzed, a series of drainage methods were proposed accordingly, the major drainage methods were strengthened pre- drainage with crossed boreholes, simultaneous drainage with mining, and overlying coal seam gas drainage and pressure releasing with high level borehole in return airway; and the backup plan was upper corner pipe drainage in goal. The drainage effect was tested, the average residual gas content was 2.4m^3/t after drainage, the absorbable gas content was 0. 65～ 1.12m^3/t, the requirement （6m^3/t） of“Interim Provisions of Gas Drainage Standard” was satisfied.

关 键 词：瓦斯抽采 顺层抽采 交叉钻孔 采前预抽 

分 类 号：TD712[矿业工程—矿井通风与安全]