水泥浆液在砂层注浆中的渗滤效应分析

Analysis of Filtration Effect of Cement Grout in Sand Layer Grouting

本文针对地下工程中的砂层灾害注浆问题,通过试验方法阐述了水泥类浆液在砂层注浆过程中的渗滤效应,证明了在部分颗粒级配砂层内渗滤效应显著,提出了基于渗滤效应的加固有效可注半径和渗透有效可注半径的概念,分析了表层渗滤和深层渗滤的作用机理,推测了四种渗滤模式,为类似工程灾害问题治理提供思路和参考。

Aiming at the grouting problem of sand layer disaster in underground engineering,this paper expounds the filtration effect of cement grout in the process of sand layer grouting through experimental methods,and proves that the filtration effect is significant in some particle gradation sand layers.The concept of effective grouting radius of reinforcement and effective grouting radius of filtration based on filtration effect is proposed.The mechanism of surface filtration and deep filtration is analyzed,and four filtration modes are speculated.This paper provides ideas and references for the treatment of similar engineering disaster problem.