摘要
介绍了地面注浆加固异常地质构造带作用机理,对地面注浆加固后的现场岩芯样进行了表观分析和抗压强度试验;同时结合扫描电镜观测了岩芯样微观结构,分析了地面注浆对异常地质构造带的加固效果。分析结果表明,采取地面注浆加固地质异常构造带,不但可以降低异常体区域裂隙率,防止突水,而且可以加强巷道顶底板岩体力学性质,增强围岩的自承载能力。
This paper introduces the mechanism of ground grouting reinforcing to abnormal geological structural belts,based upon the compressive strength experiment and the appearance analysis of that site＇s core sample,tends to adopt the SEM to make a study on the pore structure of sample,and made an analysis of the reinforcement effect.The results indicate that ground grouting reinforcing could not only reduce the fissure rate of the abnormal areas,rule out the possibility of floods,but also strengthen the mechanical property of the rock mass on the roof and floor in roadway,increase the self-bearing capacity of the surrounding rock.
出处
《中国煤炭》
北大核心
2011年第7期64-66,共3页
China Coal
关键词
地面预注浆
异常地质构造带
扫描电镜
pre-grouting from the surface
abnormal geological structural belts
SEM
