摘要
在重庆松藻矿区开采的保护层中,均有煤与瓦斯突出风险。在瓦斯治理时,采取的技术措施是通过本层抽采钻孔,但矿区内的多数保护层煤层薄且松软、硬度小、透气差、瓦斯含量高,在本层钻孔抽采治理瓦斯时,钻孔因煤层松软,极易发生钻孔塌孔,造成钻孔堵塞,瓦斯抽采效果差。2013年,在松藻矿区的渝阳煤矿的N3702采煤工作面尝试采取了埋设筛管护孔这一措施来抽采、治理瓦斯,取得了较好的抽采效果。
The risk of coal and gas outburst in the protective layer of the Chongqing Songzao Mining Area. In the gas treatment, the technical measures adopted is to adopt the coal mining, but the majority of protective seam in the mine is thin and soft, small, small, high permeability, gas content. In this layer, the drilling and drainage management of gas, the drilling due to the soft coal seam, prone to hole collapse, resulting in the hole blockage, gas drainage effect is poor. In 2013, in N3702 coalface of Yuyang Coal Mine, Songzao Mining Area, attempted to take buried screen hole protecting the measures to smoke production, gas control, and achieved good drainage effect.
出处
《科技与创新》
2015年第21期17-20,共4页
Science and Technology & Innovation
关键词
煤矿
松软煤层
瓦斯抽采
抽采技术
coal mine
soft coal seam
gas drainage
extraction technology
