低渗透高瓦斯煤层巷道快速掘进之增透措施研究
李安东
（山西省煤炭建设监理有限公司，山西 太原 030012）
摘要： 杏儿沟煤业二采区带式输送机下山煤层透气性系数较低，瓦斯抽采效率不高，影响巷道掘进速度。为了有效
解决该低渗透高瓦斯煤层巷道快速掘进问题，设计了二氧化碳爆破增透方案。现场试验结果表明，二氧化碳爆破增透措
施能够很好地适应高瓦斯煤层顺槽快速掘进工作，使瓦斯体积分数大幅度降低，掘进速度大幅度提高。
关键词： 低渗透高瓦斯煤层；二氧化碳爆破增透；卸压圈；快速掘进
中图分类号： TD712⁺.62      文献标志码： A      文章编号： 2095-0802-(2022)11-0116-03
Permeability Enhancement Measures for Fast Excavation of Low-permeability and High-gas
Coal Seam Roadways
LI Andong
(Shanxi Coal Construction Supervision Co., Ltd., Taiyuan 030012, Shanxi, China)
Abstract: The permeability coefficient of the downhill coal seam by the belt conveyor in the second mining area of Xing'ergou
Coal Industry Co., Ltd. is low, and the gas drainage efficiency is not high, which affects the tunneling speed. In order to effectively
solve the problem of rapid excavation of the low-permeability and high-gas coal seam roadway, this paper designed a carbon
dioxide blasting and permeability-enhancing scheme. The field test results show that the carbon dioxide blasting and permeabilityenhancing
measures can well adapt to the rapid tunneling of high-gas coal seams, so that the gas volume fraction is greatly
reduced and the tunneling speed is greatly increased.

Key words: low-permeability and high-gas coal seam; carbon dioxide blasting and permeability enhancement; pressure relief
ring; rapid excavation