| 溶蚀丘陵型岩溶流域概念性水文模型及其应用 |
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| 引用本文： | 陈晓宏,颜依寒,李诚,危润初.溶蚀丘陵型岩溶流域概念性水文模型及其应用[J].水科学进展,2020,31(1):1-9. |
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| 作者姓名： | 陈晓宏 颜依寒 李诚 危润初 |
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| 作者单位： | 中山大学水资源与环境研究中心,广东广州510275;华南地区水循环与水安全广东省普通高校重点实验室,广东广州510275;中水珠江规划勘测设计有限公司,广东广州510610;长沙理工大学水利工程学院,湖南长沙410114 |
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| 基金项目： | 国家重点研发计划资助项目（2017YFC0405900）；国家自然科学基金资助项目（91547202） |
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| 摘 要： | 为弥补传统概念性水文模型在岩溶水文模拟上的缺陷,基于三水源新安江模型,采用多个线性水库表达岩溶地下系统的异质性,同时引入流域虚拟面积系数修正岩溶流域的非闭合性。将改进的概念性水文模型应用于湘中南典型溶蚀丘陵型岩溶流域,并在此基础上探讨岩溶流域非闭合性的动态变化。研究结果表明:①改进模型的日径流模拟精度提高11.21%,水量平衡误差及低水误差分别降低23.29%、27.64%;②岩溶地下汇流系统的多向性导致流域非闭合状态具有双重性;③地下汇流面积与时段降雨量呈正相关,然而受地下饱和程度的制约,地下汇流面积的变化率随时段降雨量的增大而减小;④由于岩溶地貌的蓄水滞水作用,地下流域受外侧补给的过程存在滞后性。模型的改进与拓展研究可为岩溶水文模拟提供新思路。
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| 关 键 词： | 溶蚀丘陵型岩溶流域 非闭合性 三水源新安江模型 水源划分 流域虚拟面积系数 |
| 收稿时间： | 2019-04-01 |
Conceptual hydrological model of corrosional hill karst watershed and its application |
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| CHEN Xiaohong,YAN Yihan,LI Cheng,WEI Runchu.Conceptual hydrological model of corrosional hill karst watershed and its application[J].Advances in Water Science,2020,31(1):1-9. |
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| Authors: | CHEN Xiaohong YAN Yihan LI Cheng WEI Runchu |
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| Affiliation: | 1.Center for Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China2.Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, China3.China Water Resources Pearl River Planning Surveying & Designing Co., Ltd., Guangzhou 510610, China4.School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China |
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| Abstract: | To mitigate the insufficiency of the traditional hydrological model in karst hydrological simulation,the Xin'anjiang Hydrological Model was modified by reconstructing a heterogeneous groundwater system with linear reservoirs and introducing the virtual area coefficient of the watershed (f) to modify non-conservative characteristics. The modified Karst Hydrological Model was applied to the Chongling River Basin,a typical corrosional hill region of southern Hunan Province,China. In addition,this study focused on dynamic changes of non-conservative characteristics based on the modified model. The results demonstrate the following:① The modified model outperformed the Xin'anjiang Model in karst hydrologic simulation (by 11.21%) especially in water balance (by 23.29%) and low water flow (by 27.64%);② The non-conservative status of the karst watershed has duality because of the multi-directionality of the underground confluence system;③ The area of the underground system is positively correlated with precipitation,while the variation of the area decreases with the increase of the precipitation by the constraint of underground saturation;④ Inter-catchment water exchange exhibits time lag because of the hydration and water retention of karst. |
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| Keywords: | corrosional hill karst watershed non-conservative characteristic Xin'anjiang hydrological model water source partition virtual area coefficient of the watershed |
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