《Indian Journal of Science & Technology》刊登“利用温度场的数值模型研究土石坝的渗漏”

作者：Yousefi, S.，Noorzad, A.，Ghaemian, M.，Kharaghani, S.

刊物：《Indian Journal of Science & Technology》. 2013年8月，第6卷8期，第5078-5082页.

关键词：土石坝；有限元分析；泄露；渗流；Shamil大坝；温度模拟

摘要：本文运用渗流和温度数值模块对土石坝的渗漏进行数值模拟研究。在很多情况下不能预测土石坝的渗漏是其破坏的主要原因。渗流量的确定和坝体渗漏的预测非常重要。模拟坝体温度的变化可以估计土体层中的水流速。水在坝体中流动时，保留着包括温度等在内的水库水的所有特性。在模拟渗流场和温度场时，质量和能量守恒方程是离散的。在饱和和非饱和区域，利用有限元方法与数学模型结合求解控制方程。文中以位于伊朗南部的Shamil大坝作为案例建模。为了评估该大坝的状态，对不同渗透系数的土材料进行了分析并于量测数据进行了比较，对渗漏和温度模型的数值解进行比较和讨论，结果表面，温度数据对渗漏的影响比测压管水头数据的影响更明显。

Seepage Investigation of Embankment Dams using Numerical Modeling of Temperature Field

Authors：Yousefi, S.，Noorzad, A.，Ghaemian, M.，Kharaghani, S.

Journal：《Indian Journal of Science & Technology》. Aug2013, Vol. 6 Issue 8, p5078-5082.

Keyword：Embankment Dam；Finite Element Analysis；Leakage；Seepage Flow；Shamil Dam；Thermal Simulation

Abstract：Leakage in embankment dam by applying seepage and thermal numerical simulations are studied in this paper. Unpredicted seepage in earthen dams is known as the main cause of damage in most cases. Determination of seepage flow quantity and prediction of dam leakage is very important. Temperature variation in dam body can be simulated to estimate the water velocity in soil layers. While moving through dam body, seepage flow carries all physical specifications of reservoir water, including its temperature. Mass and energy balance equations are discretized for modeling flow and temperature fields. The finite element method along with a mathematical model has been utilized to discretize and solve the governing equations in saturated and unsaturated zones. Shamil embankment dam located in South of Iran is considered as a case study to investigate the proposed model. To evaluate the condition of dam, different cases of soil materials with different permeability coefficients are analyzed and compared with measured data. Numerical results of seepage and temperature modeling are compared and discussed. The obtained results indicate that inspecting temperature data can magnify the effect of leakage more clearly than investigating piezometric head data.

原文链接：https://vpn2.nlc.gov.cn/prx/000/http/web.ebscohost.com/ehost/detail?vid=4&sid=dcb97d34-4de2-4ba1-8e40-da46e83f23cb%40sessionmgr15&hid=20&bdata=Jmxhbmc9emgtY24mc2l0ZT1laG9zdC1saXZl#db=a9h&AN=90027915