基于渗流分析的闸基水泥土换填厚度研究  

Replacement Thickness of Cement Soil for Gate Foundation Based on Seepage Analysis

作　　者：朱学英 鲁文妍[2] ZHU Xueying;LU Wenyan(China Water Resources Beifang Investigation,Design and Research Co.,Ltd.,Tianjin 300222,China;Nanjing Hydraulic Research Institute,Nanjing,Jiangsu 210029,China)

机构地区：[1]中水北方勘测设计研究有限公司,天津300222 [2]南京水利科学研究院,江苏南京210029

出　　处：《水利与建筑工程学报》2022年第2期113-117,共5页Journal of Water Resources and Architectural Engineering

基　　金：国家重点研发计划(2020YFC1511905)。

摘　　要：涡河移址新建蒙城枢纽工程是涡河上一座集防洪、排涝、蓄水灌溉、交通航运于一体的水利工程,其节制闸闸基坐落于粉砂性地基上。粉砂地基透水性强,抗渗允许坡降低,需做好截渗工作。拟在设置防渗墙方案基础上结合水泥土换填技术解决其抗渗问题。水泥土相比原土体具有高强度、低压缩性、低渗透性特点,采用有限元方法开展了不同水泥土换填厚度的闸基渗流分析,建议将该工程水泥土换填厚度控制在0.5 m~1.5 m范围内,为类似工程中水泥土换填厚度的选取提供参考。The newly built Mengcheng hub project is a water conservancy project integrating flood control,waterlogging drainage,water storage and irrigation,transportation and shipping on the Guo River. Its sluice foundation is located on silty sand foundation. Silt foundation has strong water permeability and impermeability,and the allowable slope is reduced,so it is necessary to improve seepage interception. Cement soil replacement technology is proposed to solve the anti-seepage problem based on the scheme of setting anti-seepage wall. Compared with the original soil,cement soil has the characteristics of high strength,low compressibility and low permeability. In this paper,the seepage analysis of gate foundation with different cement soil replacement thickness is carried out by finite element method. The results suggest to control the thickness of cement soil replacement in the project within the range of 0. 5 m ~ 1. 5 m,which provides reference for the selection of cement soil replacement thickness in engineering.

关 键 词：水泥土换填 渗透性 粉砂地基 有限元 

分 类 号：TV66[水利工程—水利水电工程]