煤巷掘进跨步预抽煤层瓦斯技术研究与应用

发布时间：2018-02-03 14:12

本文关键词： 高瓦斯矿井煤巷掘进瓦斯抽采钻孔设计　出处：《中国安全生产科学技术》2017年02期 　论文类型：期刊论文

【摘要】：在采取瓦斯抽采安全技术措施情况下,针对煤巷掘进难以实现煤层的边掘边抽问题,提出煤巷掘进跨步预抽煤层瓦斯的方法。该方法利用钻场抽采孔在始端汇集末端发散的分布特点,通过钻场沿煤巷掘进方向的前后错位及钻孔布置的优化设计,实现钻孔在工作面前方煤体密集段与分散段的交错重叠,保障煤巷掘进控制区煤体瓦斯的无死角连续抽采及煤巷的持续掘进。现场试验表明:该技术在掘进面前方煤体具有较好的抽采效果,成功实现了煤巷的连续不间断掘进,在煤巷掘进期间未发生工作面瓦斯涌出事故及煤与瓦斯突出征兆。该技术为高瓦斯矿井及按突出矿井管理的煤层实现煤巷的边掘边抽提供了借鉴。
[Abstract]:In the case of gas drainage safety measures, the coal roadway driving is difficult to realize the coal seam side excavation and drainage problem. This paper puts forward a method of coal seam gas pre-drainage in coal roadway drivage. This method utilizes the distributing characteristic of diverging hole in the beginning end of mining hole in the drilling ground, and through the optimization design of the front and back dislocation of the drilling ground along the heading direction of coal roadway and the arrangement of drilling hole. The interlaced overlap between the dense and dispersed sections of coal body in front of the working face can be realized by drilling holes. The field test shows that the technology has better extraction effect in the face of roadway driving, which ensures the continuous extraction of coal body gas without dead angle in the driving control area of coal roadway and the continuous driving of coal roadway in front of the coal roadway, and the field test shows that the technology has a good effect in drawing coal body in front of tunneling. The continuous uninterrupted driving of coal roadway has been realized successfully. There were no gas emission accidents and signs of coal and gas outburst in coal roadway during roadway excavation. This technology provides a reference for realizing coal roadway drainage while digging in high gas mine and coal seam managed by outburst mine.
【作者单位】：煤科集团沈阳研究院有限公司;煤矿安全技术国家重点实验室;河南省前进化工科技集团股份有限公司;
【分类号】：TD712.6
【正文快照】： 0引言瓦斯抽采不仅能降低煤层瓦斯储量,同时亦增强煤体的强度实现煤矿的安全采掘;另外,瓦斯抽采对清洁能源的开发利用及降低环境污染具有重大意义[1-2]。我国煤矿安全规程[3]规定严禁在未采取有效消突措施下的突出煤层进行采掘作业,对于高瓦斯及煤与瓦斯突出未界定的煤层,进行

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