摘要
研究专注于煤矿工作面瓦斯防突技术的应用,特别是定向长钻孔瓦斯抽采防突技术在石门揭煤作业中应用。旨在评估这一技术在防止瓦斯突出方面的有效性,以确保煤矿安全和生产符合相关法规。为确保工作面的安全推进,在工作面前方的煤层区域设置检验钻孔,用于测定残余瓦斯压力和含量,并确保其符合标准。研究结果显示,实际操作中的残余瓦斯含量和压力均满足相关标准,5个检测钻孔的瓦斯压力平均值为0.522 MPa,瓦斯含量为4.5 m3/t,满足瓦斯含量小于8 m3/t、瓦斯压力小于0.74 MPa的要求。表明该技术可以有效防止瓦斯突出。另外,采用钻屑瓦斯解吸指标法进行突出危险性评估,结果显示在揭煤阶段的工作面不再有突出危险,可以继续进行揭煤工作。
This study focused on the application of gas outburst prevention technology in coal mine working faces,especially the directional long borehole gas extraction and outburst prevention technology applied in rock cross-cut coal uncovering operation.The aim was to evaluate the effectiveness of this technology in preventing gas outburst,in order to ensure that coal mine safety and production comply with relevant regulations.To ensure the safe advancement of the working face,inspection boreholes were set up in the coal seam area in front of the working face to measure the residual gas pressure and content,and ensure that they meet the standards.The research results show that the residual gas content and pressure in actual operation meet relevant standards.The average gas pressure of the five detection boreholes is 0.522 MPa,with a gas content of 4.5 m3/t,meeting the requirements of gas content less than 8 m3/t and gas pressure less than 0.74 MPa.This indicates that the technology has effectively prevented gas outburst.In addition,the method of drilling cuttings gas desorption index was used to evaluate the risk of outburst,and the results showed that there was no longer any outburst risk in the working face during the coal mining stage,and the coal mining work can continue.
作者
石军
SHI Jun(Shuangliu Coal Mine,Shanxi Fenxi Mining Industry Group,Lvliang 033000,Shanxi,China)
出处
《能源与节能》
2024年第8期98-100,共3页
Energy and Energy Conservation
关键词
石门揭煤
定向长钻孔
瓦斯抽采
防突
rock cross-cut coal uncovering
directional long drilling
gas extraction
outburst prevention
