杨彦宏 丁 杨

(中国煤炭科工集团北京华宇工程有限公司,北京市西城区,100120)



突出煤层群保护层开采及巷道布置研究

杨彦宏 丁 杨

(中国煤炭科工集团北京华宇工程有限公司,北京市西城区,100120)

摘 要针对西上庄矿井高瓦斯、煤与瓦斯突出煤层群开采存在的瓦斯防治难题,选择弱突煤层作为保护层开采,采用理论计算判定方法论证了下保护层开采的可行性,确定了下保护层的保护垂距。在此基础上对采区主要巷道系统布置方式进行研究,确定突出煤层群开采的主要巷道布置参数。

关键词煤与瓦斯突出煤层 上行开采 内错尾巷 走向高抽巷 岩石底抽巷

Study on protective seam mining and roadway layout of outburst coal seam group

Yang Yanhong,Ding Yang
(Beijing Huayu Engineering Co.,Ltd.,China Coal Technology and Engineering Group,Xicheng,Beijing 100120,China)

Abstract Aiming at gas prevention and control problem existed in high-gas and coal and gas outburst coal seam group mining,and choosing a weak outburst coal seam as a protective seam,the feasibility of underside protective seam mining was demonstrated by theoretical calculation methods,and the protective vertical distance of underside protecting seam was determined.And on this basis main roadway system layout of mining area was researched,then the main roadway layout parameters of the outburst coal seam group mining were determined.

Key words coal and gas outburst coal seam,ascending mining,inner stagger tail roadway,high level suction roadway on the strike,rock bed plate suction roadway

保护层开采、预抽煤层瓦斯为煤与瓦斯突出矿井煤层群开采主要的区域性防突措施.合理的采区巷道布置是保障区域防突措施有效实施的关键,直接影响到矿井正常生产接续及安全生产.因此,研究高瓦斯、煤与瓦斯突出煤层群保护层开采及采区巷道布置方式的合理性对矿井设计和生产都有重要的意义.

1　工程概况

西上庄矿井位于沁水煤田东北边缘,阳泉矿区西南部,东邻阳煤集团二矿扩区,北邻新景矿及保安煤矿,南接孟家村煤炭勘探区,西为七元井田.井田北东～南西走向长约10.0 km,南西倾斜宽约5.5 km,面积约58.316 km2.地质资源量合计1047.06 Mt,设计生产能力为5.00 Mt/a,服务年限为75.6 a.主立井、副立井和中央回风立井3个井筒均布置在工业场地内,设计采用两个水平开拓.

井田内可采煤层有:山西组3＃、6＃煤层,太……