摘要
针对某矿动压影响巷道围岩变形量大锚杆索发生破断等问题,采用水力压裂技术解决相关支护难题,并在4312工作面进行了试验。结果表明,采用水力压裂技术切顶泄压后,巷道的围岩变形量明显减小、工作面机头支架周期来压步距缩小、上隅角顶板悬顶面积减小,提高了动压影响巷道的留设效果。
Aiming at the problems of large deformation of roadway surrounding rock and breakage of anchor cable caused by dynamic pressure in Changping Mine, hydraulic fracturing technology was adopted to solve the supporting problems, and tests were carried out in 4312 working face. The test results show that after hydraulic fracturing is used to cut the roof and relieve pressure, the surrounding rock deformation of the roadway is significantly reduced, the periodical pressure step distance of the working face head support is reduced, and the area of the overhanging roof of the upper corner is reduced, which improves the retention effect of the roadway under the influence of dynamic pressure.
作者
王胜涛
Wang Shengtao(Jinneng Holding Coal Group Jincheng Coal Division Shengtai Company,Jincheng Shanxi 048000)
出处
《机械管理开发》
2022年第7期177-178,183,共3页
Mechanical Management and Development
关键词
水力压裂
动压影响巷道
切顶卸压
hydraulic fracturing
roadway affected by dynamic pressure
top cutting pressure relief
