水位骤降条件下强透水基础岸墙填土渗流分析  

Seepage analysis in backfill behind quay wall on highly permeable foundation soil under rapid drawdown of water level

作　　者：吴博 赵坤朋 黄岳文 刘华北[1] WU Bo;ZHAO Kunpeng;HUANG Yuewen;LIU Huabei(School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China;Water Service Project Management Center of Guangzhou City,Guangzhou 510640,China)

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]广州市水务工程建设管理中心,广东广州510640

出　　处：《河海大学学报（自然科学版）》2021年第1期93-98,共6页Journal of Hohai University(Natural Sciences)

基　　金：广州市水务科技项目(GZSWKJ2016-04)。

摘　　要：根据强透水基础岸墙填土渗流的特点,基于饱和、非饱和土渗流理论,编写了水位骤降条件下的一维瞬态渗流差分程序,并用模型试验以及数值模拟验证了程序的可靠性。利用该程序研究了3个参数降水速度、渗透系数及土的饱和含水量对渗流过程中水压变化规律的影响。结果表明,降水速度及渗透系数对水位骤降过程水压的变化影响较大,土的饱和含水量则对此影响微弱。In this study,according to the seepage characteristics of backfill behind a quay wall on the highly permeable foundation soil,a differential program for the one-dimension transient seepage was built based on the seepage theory of saturated and unsaturated soil under the condition of water-level rapid drawdown.The reliability of the program was verified by the model test and the numerical simulation.Then the program was used to study the influences of the drawdown speed,the permeability coefficient and the water content of saturated soil on the change of water pressure during the seepage.The results show that the drawdown speed and permeability coefficient have a great influence on the change of water pressure during the rapid drawdown of water level,while the water content of saturated soil has negligible influence.

关 键 词：水位骤降 强透水基础 岸墙 瞬态渗流 差分程序 模型试验 数值模拟 

分 类 号：TV131.4[水利工程—水力学及河流动力学]