石灰对真空预压加固高含水率淤泥效果影响试验研究  

Experimental study on the effect of lime treatment on vacuum preloading to strengthen high water content muck

作　　者：占宏 李晗峰 翁振奇 ZHAN Hong;LI Han-feng;WENG Zhen-qi(Zhejiang University of Technology Engineering Design Group Co.,Ltd.,Hangzhou 310014,China;Hangzhou municipal Communications Investment Group Co.,Ltd.,Hangzhou 311301,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学工程设计集团有限公司,浙江杭州310014 [2]杭州交通投资建设管理集团有限公司,浙江杭州311301 [3]浙江工业大学土木工程学院,浙江杭州310014

出　　处：《地基处理》2020年第3期192-195,共4页Journal of Ground Improvement

摘　　要：针对石灰添加剂和真空预压联合处理高含水率淤泥过程中石灰的作用尚不明确的问题,本文采用改进的真空预压室内试验对未经石灰处理和经石灰处理后的高含水率淤泥在自重沉降以及真空预压阶段的沉降、真空度、孔隙水压力等进行分析。试验结果表明石灰处理会促使土颗粒絮凝成团,增大土体的渗透性,从而提高了真空预压的效率,能显著提高土体的抗剪强度。Considering the unclear role of lime in the process of lime treatment combined with vacuum preloading during the treatment of the high water content muck,this paper adopts improved lab model tests for natural soil samples and lime-treated soil samples under self-weight settlement and vacuum preloading.Soil settlement,vacuum degree,and pore water pressure during the test were analyzed.The test results showed that lime treatment could promote the flocculation of soil particles and increase the permeability of the soil,thereby improving the efficiency of vacuum preloading and increasing the shear strength of the soil.

关 键 词：石灰处理 真空预压 加固效果 淤泥 

分 类 号：TU457[建筑科学—岩土工程]