摘要
三软煤层应力集中区探放老空积水一直以来成孔困难。易出现塌孔、施工过程中通过应力集中区注浆加固技术大大提高了应力集中区阻、隔水强度,有效地解决了松软煤层探放水过程中钻孔易塌孔、易被冲垮等难题,为三软煤层中探放采空区积水积累了经验。
The three soft coal seam stress concentration area has been difficult in the drilling construction. The use of grouting reinforcement technology in the stress concentration zone can greatly improve the water resistance and resisting strength of the stress concentrated region, effectively solve the problem that the drilling is easy to collapse and be brushed, which accumulated experience for the probing and discharging gob water in three soft coal seam.
出处
《山东煤炭科技》
2016年第11期145-146,149,共3页
Shandong Coal Science and Technology
关键词
注浆加固
三软煤层
塌孔
grouting reinforcement three soft coal seam collapse hole
