摘要
针对高应力松软煤层施工钻孔容易塌孔,堵孔、抽采纯量衰减较快、瓦斯治理效果不理想,影响快速掘进的特点,在原来治理瓦斯三部曲模式的基础上,采取了补打钻孔、增加反向钻孔、帮部瓦斯预抽和底部瓦斯预抽等综合补充瓦斯治理措施,大大地提高了瓦斯抽采效率,缓解了巷道快速掘进的压力,探索出了特殊地质条件下瓦斯治理的新模式。
For the construction of high-stress soft coal seams, the drilling was prone to collapse, the hole clogging, the scalar purity of the extraction was fast, the gas control effect was not ideal, and the characteristics of rapid excavation were affected. Based on the original model of the gas trilogy, comprehensive gas remediation measures such as drilling and drilling, increasing reverse drilling, plenum pre-draining and bottom gas pre-pumping were adopted, which greatly improved gas drainage efficiency, eased the pressure of rapid roadway excavation, and a new model of gas control under special geological conditions was explored.
作者
龚大银
Gong Dayin(Gucheng Mine Construction Management Office, Changzhi 046100, China)
出处
《煤炭与化工》
CAS
2019年第4期112-114,121,共4页
Coal and Chemical Industry
关键词
塌孔
局部治理
反向钻孔设计
插管抽采
底部预抽
帮部预抽
collapsed hole
local treatment
reverse drilling design
intubation extraction
bottom pre-extraction
