降雨对裂隙型岩溶含水系统演化影响的数值模拟研究

毛 亮; 于青春; 王敬霞; 李洪辉; 赵帅维; 贾梅兰

doi:10.11932/karst20170105

降雨对裂隙型岩溶含水系统演化影响的数值模拟研究

doi: 10.11932/karst20170105

1.
中国辐射防护研究院三废治理研究所/中国地质大学（北京）水资源与环境学院
2.
中国地质大学（北京）水资源与环境学院
3.
中国辐射防护研究院三废治理研究所

基金项目: 国家自然科学基金资助项目（40772208）

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出版历程
- 发布日期: 2017-02-25

Numerical simulation of precipitation impact on fractured karst system evolution

1.
China Institute for Radiation Protection/School of Water Resource＆Environment, China University of Geosciences (Beijing)
2.
School of Water Resource＆Environment, China University of Geosciences (Beijing)
3.
China Institute for Radiation Protection

摘要

摘要: 本文在构建有降雨入渗及河流补给的裂隙型岩溶含水系统的概念模型基础上，采用有限差分数值方法，利用裂隙渗流立方定律及Dreybort（1996）经过实验总结出的碳酸钙溶蚀经验公式，定量地计算了裂隙型岩溶含水系统经过10 000年溶蚀的演化形态及岩溶泉的变化。模拟发现，岩溶含水系统的溶蚀主要发生在降雨入渗面处、河流补给处和岩溶泉的出露点附近。随着溶蚀的进行，岩溶含水系统的潜水位不断下降部分岩溶泉被疏干，通过计算岩溶泉汇流管道的隙宽变化，发现岩溶含水系统会出现明显的差异性溶蚀。在模拟过程中调节降雨量的大小发现降雨入渗对有河流补给的岩溶含水系统的演化影响并不显著。
- 岩溶演化 /
- 裂隙渗流 /
- 碳酸盐溶蚀速率 /
- 数值模拟
Abstract: The 10,000 years evolution of fractured karst system,which has precipitation infiltration and river recharge,is calculated using finite difference method, cubic law and Dreybort's (1996) empirical formula after building on the conceptual model of fractured karst system The result shows that the dissolution of karst aquifer system mainly occurs in the point of precipitation infiltration, recharge rivers and karst springs. With the dissolution of the karst aquifer system, the water tables were declining and some of the karst springs were dry. We found that the number of precipitation infiltration does not significantly affect the evolution of fractured karst system which has river recharge.
- karst evolution /
- fracture seepage /
- carbonate dissolution rate /
- numerical simulation

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参考文献(21)

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