水泥搅拌桩现场渗透系数试验方法探讨  

Exploration of On-site Permeability Coefficient Testing Methods for Cement Mixing Pile

作　　者：丁华 金瑜 DING Hua;JIN Yu

机构地区：[1]浙江正浩工程研究有限公司,浙江绍兴312000 [2]浙江土力工程勘测设计院有限公司,浙江绍兴312000

出　　处：《浙江建筑》2023年第5期50-53,共4页Zhejiang Construction

摘　　要：水泥搅拌桩作为止水帷幕广泛应用于基坑支护、水库大坝、垃圾填埋场等工程,其加固后的水泥土渗透系数是重要的评判参数。水泥搅拌桩加固后的水泥土性能存在一定的不均匀性和差异性,宜采取现场注水试验的方法测试其渗透系数。在此结合相关规范要求,给出了水泥土渗透系数现场注水试验的计算方法、试验要点,以及相应的评判标准,这对指导工程应用具有一定的现实意义。As a water stop curtain,cement mixing piles are widely used in various projects,including foundation pit support,reservoir dams,landfills,and more.In these applications,the permeability coefficient of soil-cement reinforced by cement mixing piles serves as a crucial evaluation parameter.The performance of soil-cement reinforced by cement mixing piles has certain inhomogeneity and difference,and its permeability coefficient should be tested by water injection test in the field.In this paper,the researcher summarized calculation method,test locations,and cor‐responding evaluation criteria for conducting on-site water injection tests to determine the cement soil permeability coefficient.These guidelines are aligned with relevant specifications and hold practical significance in guiding engineering applications.

关 键 词：水泥搅拌桩 渗透系数 注水试验 变水头 等效截面 渗透等级 

分 类 号：TU473[建筑科学—结构工程]