丽江洪水特征及其在HEC-HMS中喀斯特蓄水的意义

IF 2.7 4区 环境科学与生态学 Q2 Environmental Science
S. Rad, Dai Junfeng, Xu Jingxuan, Li Zitao, Pan Linyan, Zepeng Wan, Liao-Fan Lin
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引用次数: 3

摘要

通过对丽江3个主要喀斯特/非喀斯特河段的特征分析,揭示了不同洪水行为背后的原因,从而更好地理解洪水的形成过程。利用63年的降雨径流数据,应用水文工程中心的水文模拟系统(HEC-HMS)洪水预报模型,研究了该流域的地质水文特征。通过土壤水分核算损失数据,将卡丁车有效库容(ARCK)纳入模型,评估该变量的影响。特别是,发现预期的瞬时峰值放电率和时间与生成的单位水文曲线在很大程度上不平衡。此外,不同子流域的洪水特征在所需的峰值修正量上存在显著差异(中游和上游子流域的峰值修正量分别为2 ~ 4倍),这主要与独特的喀斯特结构和雨季/旱季不同ARCK的初始条件有关。此外,由于地形条件的影响,楔形和棱柱的蓄水量和水流线的行/退时间也存在显著差异。虽然驱动因素对喀斯特洪水形成的贡献率无法定量建模,但基于我们的研究结果,ARCK在预测结果中发挥了重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lijiang flood characteristics and implication of karst storage through Muskingum flood routing via HEC-HMS, S. China
We analyzed the characteristics of three main karstic/non-karst reaches of the Lijiang River in south China to uncover the causes behind different flood behaviors by providing a better understanding of the flood formation process. Having 63 years of rainfall-runoff data and applying the Hydrologic Engineering Canter's Hydrologic Modeling System (HEC-HMS) flood forecasting model, the geo/hydrological features were investigated. The available reservoir capacity of karts (ARCK) was included in the model through soil moisture accounting loss data to assess the impact of this variable. In particular, the expected instantaneous peak discharge rates and times were found largely imbalanced with generated unit hydrographs. Moreover, there were significant gaps among the floods’ features in different subbasins in terms of required peak modifications (i.e., two to four times bigger for midstream and upstream subbasins, respectively), which were mainly associated with the unique karst structure and the initial condition due to various ARCK in rainy/dry seasons. Besides, notable dissimilarities between the wedge and prism storage volumes and the hydrograph's wave traveling/receding time were observed owing to the geomorphological conditions. Although the contribution rates of drivers in karst flood formation cannot be quantitatively modeled, however, based on our results the ARCK emerged to play a substantial role on the forecasted results compared.
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来源期刊
Hydrology Research
Hydrology Research Environmental Science-Water Science and Technology
CiteScore
5.30
自引率
7.40%
发文量
70
审稿时长
17 weeks
期刊介绍: Hydrology Research provides international coverage on all aspects of hydrology in its widest sense, and welcomes the submission of papers from across the subject. While emphasis is placed on studies of the hydrological cycle, the Journal also covers the physics and chemistry of water. Hydrology Research is intended to be a link between basic hydrological research and the practical application of scientific results within the broad field of water management.
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