%0 Journal Article
%T 土体劈裂注浆加固主控因素模拟试验
%A 朱明听
%A 张庆松
%A 李术才
%A 李卫
%A 随海通
%A 杨红鲁
%J 浙江大学学报(工学版)
%D 2018
%R 10.3785/j.issn.1008-973X.2018.11.003
%X 为了分析注浆挤密及浆脉骨架对注浆加固效果的影响，确定注浆加固主控因素，提出注浆挤密系数及浆脉骨架系数和其计算方法，设计土体劈裂注浆加固三维模拟试验系统，开展土体注浆加固模拟试验.采用凝固时间显著不同的水泥浆液及水泥-水玻璃浆液分别对土体进行注浆加固，形成不同空间分布状态的浆脉骨架；通过测定注浆压力、土压力、土体密度及浆脉空间分布特征确定注浆挤密系数及浆脉骨架系数；监测隧道收敛变形以评价注浆加固效果，定性分析注浆挤密及浆脉骨架作用对注浆加固效果的影响.研究结果表明，水泥-水玻璃浆液注浆挤密程度大于水泥浆液，水泥-水玻璃浆液骨架作用小于水泥浆液；注浆挤密作用对于注浆加固效果的影响程度大于浆脉骨架作用，注浆挤密作用是影响土体劈裂注浆加固效果的主控因素.</br>Abstract: The grouting compaction and vein skeleton coefficients were defined and calculated to analyze the influence of grouting compaction and vein skeleton on soil splitting grouting reinforcement and determine the main control factors. A three-dimensional grouting simulation test system was developed and grouting simulation tests were carried out. Different vein skeletons were formed by grouting cement slurry and cement-sodium silicate slurry with different solidification times into soil. Grouting compaction and vein skeleton coefficients were determined by analyzing grouting pressure, additional pressure of surrounding rock, soil density and spatial distribution characteristics of slurries. The tunnel convergent deformation was monitored to evaluate the reinforcement effect and analyze qualitatively the influence of grouting compaction and vein skeleton on soil splitting grouting reinforcement. Results showed that the compaction degree of cement-sodium silicate slurry was higher than that of cement slurry, the vein skeleton effect of cement-sodium silicate slurry was lower than that of cement slurry. Grouting compaction was more influential than vein skeleton on soil splitting grouting reinforcement effect. The grouting compaction is the main control factor for soil split grouting.
%U http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2018.11.003