近距离煤岩独巷同向递进快速消突技术
发布时间：2018-07-14 15:34
【摘要】：为解决端氏煤矿集中回风巷独头掘进快速消突问题,借助近距离煤岩独巷同向递进的开拓条件,采用顺层孔和穿层孔立体交叉抽采技术全面控制防突区域。抽采期间为防治轨道大巷炮掘扰动破坏钻孔,顺层孔采用全孔段下放筛管以及穿层孔采用"破孔、透孔、分段封孔"三步走二次封孔的防突保障技术,实现防突钻孔高效、持久抽采。经过区域预抽35~40 d后,集中回风巷正前方和两侧15 m范围内煤体的残余瓦斯含量均小于8 m~3/t,满足区域防突效果检验要求,实现独头煤巷快速消突,保障"抽、掘"平衡。
[Abstract]:In order to solve the problem of rapid outburst suppression in Duan's coal mine concentrated return air roadway, with the help of the development condition of close distance coal and rock single roadway in the same direction, the outburst prevention area is completely controlled by the technology of intersectional extraction of bedding hole and perforating hole. In order to prevent the disturbance and damage drilling of track roadway during extraction, the down-cut sieve pipe in the whole hole section and the "breaking hole, perforating hole, segmental sealing hole" technology are adopted in the down-layer hole to realize the high efficiency of anti-outburst drilling. Long-lasting extraction. After 35 ~ 40 days of regional pre-drainage, the residual gas content of coal is less than 8 m / 3 / t in front of and within 15 m range of both sides, which meets the requirements of regional anti-outburst effect test, realizes rapid outburst suppression in single-head coal roadway, and ensures "drainage and excavation" balance.
【作者单位】： 煤科集团沈阳研究院有限公司;
【基金】：“十三五”国家大型油气田及煤层气开发科技重大专项资助项目(2016ZX05045-004-001)
【分类号】：TD713.3
，
本文编号：2122106
[Abstract]:In order to solve the problem of rapid outburst suppression in Duan's coal mine concentrated return air roadway, with the help of the development condition of close distance coal and rock single roadway in the same direction, the outburst prevention area is completely controlled by the technology of intersectional extraction of bedding hole and perforating hole. In order to prevent the disturbance and damage drilling of track roadway during extraction, the down-cut sieve pipe in the whole hole section and the "breaking hole, perforating hole, segmental sealing hole" technology are adopted in the down-layer hole to realize the high efficiency of anti-outburst drilling. Long-lasting extraction. After 35 ~ 40 days of regional pre-drainage, the residual gas content of coal is less than 8 m / 3 / t in front of and within 15 m range of both sides, which meets the requirements of regional anti-outburst effect test, realizes rapid outburst suppression in single-head coal roadway, and ensures "drainage and excavation" balance.
【作者单位】： 煤科集团沈阳研究院有限公司;
【基金】：“十三五”国家大型油气田及煤层气开发科技重大专项资助项目(2016ZX05045-004-001)
【分类号】：TD713.3
，
本文编号：2122106
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