摘要
基于淮南地区煤矿受软弱破碎围岩及回采动压等影响,巷道支护失稳变形的情况,根据现场勘测支护破坏特征分析了破坏机理,提出了此围岩条件下的U型全封闭钢架和注浆及锚网喷注的联合支护方案,经后期支护效果监测,揭示了65 d后支护变形趋于稳定,说明了该支护形式在复杂围岩条件下是可行的。
As a result of the weak broken surrounding rock and the influence of dynamic pressure, the coal mines＇ supporting appear instability deformation and almost lost carrying capacity in Huainan area, researching its failure characteristics and analyzing the failure＇ s reason, we decid-ed to adopt the enclosed U-steel and grouting ＆ shotcrete in this complex rock conditions, after the monitor of the support effect in tater period. After 65 days the deformation become stable, so this supporting is practicable.
出处
《山西建筑》
2013年第33期41-43,共3页
Shanxi Architecture
基金
安徽省2012年高校省级优秀青年人才基金项目(项目编号:2012SQRL257)
关键词
全封闭U型棚架
复杂围岩
动压巷道
联合支护
工业试验
enclosed U-steel, complex rock surrounding, soft roadway affected by mining, support-combination, industrial test
