| 潍河下游地区海咸水入侵动态三维数值模拟分析 |
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| 引用本文： | 陈鸿汉,王新民,张永祥,任仲宇.潍河下游地区海咸水入侵动态三维数值模拟分析[J].地学前缘,2000(Z2). |
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| 作者姓名： | 陈鸿汉 王新民 张永祥 任仲宇 |
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| 作者单位： | 中国地质大学!北京100083(陈鸿汉)，长春科技大学!长春130026(王新民，张永祥)，建设部城市水资源研究中心!北京100007(任仲宇) |
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| 基金项目： | 国家自然科学基金重点资助项目!(49832 0 0 5 )，环境污染控制与模拟国家重点实验室基金资助项目 |
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| 摘 要： | 文中以潍河下游的莱洲湾南岸地区为研究区 ,阐述了海咸水分布规律。针对海咸水运移过程中的水动力学特征和化学动力学特征 ,推导了水动力化学动力耦合的盐分运移对流弥散方程 ,水动力过程考虑了浓度变化对水流运动的影响 ,化学动力学过程考虑了含水介质表面吸附 (解吸 )作用对盐分运移的影响。采用改进的非线性特征有限元法 ,求解高浓度溶质运移三维模型。计算结果表明 ,该模型更真实地刻画了海咸水入侵系统。通过对海咸水入侵规律进行模拟 ,指出海咸水入侵的根本原因是过量开采地下淡水资源 ,要防止海咸水入侵 ,必须科学开采地下淡水资源。
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| 关 键 词： | 海咸水入侵 三维模型 数值模拟 水动力-化学动力耦合 |
THREE-DIMENSIONAL NUMERICAL SIMULATION AND ANALYSIS OF SEA-SALT WATER INTRUSION DYNAMIC SYSTEM IN THE LOWER REACHES OF WEIHE RIVER |
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| CHEN Hong han ,WANG Xin min ,ZHANG Yong Xiang ,REN Zhong yu.THREE-DIMENSIONAL NUMERICAL SIMULATION AND ANALYSIS OF SEA-SALT WATER INTRUSION DYNAMIC SYSTEM IN THE LOWER REACHES OF WEIHE RIVER[J].Earth Science Frontiers,2000(Z2). |
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| Authors: | CHEN Hong han WANG Xin min ZHANG Yong Xiang REN Zhong yu |
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| Institution: | CHEN Hong han 1,WANG Xin min 2,ZHANG Yong Xiang 2,REN Zhong yu 3 |
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| Abstract: | In this paper the authors choose the southern area of Laizhou Bay, located in the lower reaches of Weihe River, as study area and discuss the law of sea\|salt water intrusion. Based on the hydrodynamic and chemical dynamic characteristic study of sea\|salt water intrusion processes, the advection\|dispersion equation of salt transferring coupling with hydrodynamic and chemical dynamic processes is derived. The authors have considered the density variation in the hydrodynamic processes and the absorption\|desorption reaction in the chemical dynamic processes.The nonlinear characteristic FEM is used to solve three\|dimensional model of the high concentration solution transport. After simulation, it shows that the model agrees with the sea\|salt water intrusion very well. The intrusive development law is simulated and forecasted. The basic reason of the sea\|salt water intrusion is that the over\|exploration of the fresh groundwater presented. The exploration of fresh groundwater resource should be scientifically controlled to prevent the invasion of sea\|salt water. |
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| Keywords: | sea\|salt water intrusion three\|dimensional model numerical simulation hydrodynamic\|chemical dynamic coupling |
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