岩土力学2024，Vol.45Issue(7)：2085-2093,9.DOI:10.16285/j.rsm.2023.00350
真空预压淤堵区渗透系数的计算方法
A calculation method of permeability coefficient of clogging zone in vacuum preloading of waste slurry
摘要
Abstract
Clogging areas often form around the prefabricated vertical drainage plates during the vacuum preloading of waste slurry.Accurate measurement and calculation of the permeability coefficient of mud in the clogging zone are critical for predicting the consolidation of waste slurry.Since the permeability coefficient of mud in the clogging zone is difficult to measure directly and there is a lack of theoretical derivation for it,a calculation method for the permeability coefficient and thickness of the clogging zone was proposed.A test device was established to investigate the formation of the clogging zone and validate the calculation method.The test proved the practicability and feasibility of the calculation method.It is concluded that when conducting vacuum preloading on waste slurry at construction sites,the vacuum degree should be controlled below 90 kPa,and the lower the vacuum degree used in the vacuum preloading between 60 kPa and 90 kPa,the slower the formation of the clogging zone is.The proposed permeability coefficient calculation method for the clogging zone can be used to predict the degree of mud consolidation during the vacuum preloading process.关键词
废弃泥浆/真空预压/淤堵区/渗透系数/计算方法Key words
waste slurry/vacuum preloading/clogging zone/permeability coefficient/calculation method分类
建筑与水利引用本文复制引用
崔允亮,潘方然,高楥园,金子原..真空预压淤堵区渗透系数的计算方法[J].岩土力学,2024,45(7):2085-2093,9.基金项目
浙江省基础公益研究计划(LGF20E080007).This work was supported by Basic Public Welfare Research Program of Zhejiang Province(LGF20E080007). （LGF20E080007）
