| 真空预压影响区地下水位变化的计算 |
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| 引用本文： | 张仪萍,李剑,严露.真空预压影响区地下水位变化的计算[J].江南大学学报(自然科学版),2011,10(4):439-443. |
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| 作者姓名： | 张仪萍 李剑 严露 |
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| 作者单位： | 1. 浙江大学建筑工程学院,浙江杭州,310058
2. 深圳市水务规划设计院,广东深圳,518008 |
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| 摘 要： | 基于渗流理论,采用一维非稳定渗流模型,阐述了边界为变水头条件下的真空预压影响区地下水位变化的解析方法。利用加固区平均地下水零压线作为边界条件,推导了排水边界上降深随时间变化的一维非稳定渗流,得出影响区土体中地下水位的变化规律。通过算例,分析了影响区渗透系数以及预压区排水速率等因素对影响区地下水位的影响。结果表明,对于渗透性较低的软黏土而言,采用非稳定渗流分析是必要的,影响区渗透系数是区外地下水位变化的主要因素。预压区排水速率只影响区外渗流趋于稳定的时间,对渗流范围的影响较小。
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| 关 键 词： | 软土地基 真空预压 影响区 地下水位 非稳定渗流 |
Solutions for Groundwater Level in Effected Zone of Soft Ground Under Vacuum Preloading |
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| ZHANG Yi-ping,LI Jian,YAN Lu.Solutions for Groundwater Level in Effected Zone of Soft Ground Under Vacuum Preloading[J].Journal of Southern Yangtze University:Natural Science Edition,2011,10(4):439-443. |
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| Authors: | ZHANG Yi-ping LI Jian YAN Lu |
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| Institution: | ZHANG Yi-ping1,LI Jian1,YAN Lu2(1.College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China,2.Shenzhen Water Resources Planning & Design Institute,Shenzhen 518008,China) |
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| Abstract: | The analytical solution for groundwater level changes in affected zone of soft ground with vacuum preloading was investigated by using one-dimensional unsteady seepage flow model.Using average groundwater zero pressure line in reinforced zone as the boundary condintion,solution of one-dimensional unsteady seepage flow model was conducted when reducation of water pressure in drainage boundary was changing over time.An example of the calculation based on the analytical solution was given to analyze the influe... |
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| Keywords: | soft ground vacuum preloading effected zone groundwater level unsteady seepage flow |
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