摘要
为了确保深部矿井巷道围岩的稳定性,根据理论和经验分析,煤矿巷道稳定性影响因素主要为巷道围岩性质、开采深度、采动影响剧烈程度、巷道与上部煤层间的垂距、巷道支护不合理等因素。采用采场远距离卸压保护技术、预应力锚索束技术和钻孔卸压联合主动支护技术,预防了浅部围岩变形和工字钢在锚索端部出现的弯曲变形,遏制了巷道底部浅部围岩的变形,确保了巷道的稳定性。
In order to ensure the stability of the surrounding rock of the deep mine roadway,according to the theoretical and empirical analysis,the influencing factors of the stability of the mine roadway are mainly the properties of the surrounding rock,the mining depth,the intensity of the mining influence,the vertical distance between the roadway and the upper coal seam,and the unreasonable support of the roadway.By adopting the technology of long-distance pressure relief protection in stope,pre-stressed anchor cable and drilling pressure relief combined with active support,the deformation of shallow surrounding rock and the bending deformation of I-beam at the end of anchor cable are prevented,the deformation of shallow surrounding rock at the bottom of roadway is restrained,and the stability of roadway is ensured.
作者
万法军
Wan Fajun(Henan Yongjin Energy Co.,Ltd.,Yuzhou 461670,China)
出处
《能源与环保》
2019年第11期146-149,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
动压巷道
围岩控制
巷道稳定性
预应力锚索束
钻孔卸压联合主动支护技术
dynamic pressure roadway
surrounding rock control
roadway stability
prestressed anchor cable bundle
combined pressure-supporting active support technology
作者简介
万法军(1986-),男,河南永城人,助理工程师,2013年毕业于河南工程学院,现从事矿井技术管理工作。
