摘要
Abstract
In the process of roadway excavation,in the fault fracture zone,it is necessary to control the water in the excavation.The common method is to pre-grouting the working face,and then use the advanced pipe shed+U-type steel combined support.But in the fault fracture zone containing a large number of silt,gravel filling,due to the pre grouting hole is difficult to shape,and affect the grouting effect.To solve this problem,the Makeng Mining adopts small duct"flower tube"as lead shed and grouting channel,the small catheter grouting,reinforce the roadway,make the stable curtain,and successed in the Makeng Mining west 100m stage plate transport lane.关键词
断层破碎带/花管/小导管帷幕注浆法Key words
fault crushing zone/flower tube/small tube curtain grouting method
