| 基于HEC-HMS模型的不同雨型泥石流流量变化特征 |
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| 引用本文： | 熊江,唐川,龚凌枫.基于HEC-HMS模型的不同雨型泥石流流量变化特征[J].水文地质工程地质,2019,0(3):154-154. |
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| 作者姓名： | 熊江 唐川 龚凌枫 |
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| 作者单位： | 成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川 成都610059 |
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| 基金项目： | 国家重点研发计划项目（2017YFC1501004）；国家自然科学基金项目(41672299) |
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| 摘 要： | 为了探究不同雨型条件下泥石流流量变化特征，通过搜集汶川震区典型泥石流降雨数据，将其概化为三次峰值早到型、三次峰值型、三次峰值晚到型三种雨型。以HEC-HMS水文模型构建高家沟流域模型，在获得流域清水流量结果基础上采用雨洪修正法计算不同雨型下泥石流流量。结果表明三次峰值早到型、三次峰值型、三次峰值晚到型峰值清水流量分别为33.5，41.5，45.8 m3/s，泥石流峰值流量分别为166.83，206.67，228.08 m3/s，误差为-25.6%、-7.8%、1.7%；三种雨型下流量从上游至沟口以线性方式演变，且随降雨峰值推迟其演变速率不断增大，而增长幅度逐渐减小；泥石流暴发出现在峰值降雨前后，属于降雨激发型泥石流；三种雨型随降雨峰值推迟，流量增长阶段所需时间越长，分别为5.5，6，9 h，而衰退阶段所需时间越短，分别为14.5，8，2.5 h。研究表明该模型能为缺少降雨监测数据地区泥石流研究提供技术支持。
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| 关 键 词： | 泥石流 HEC-HMS 雨型 流量特征 |
| 收稿时间： | 2018-08-29 |
| 修稿时间： | 2019-01-03 |
Flow characteristics of different rainfall type debris flow based on the HEC-HMS model |
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| XIONG Jiang,TANG Chuan,GONG Lingfeng.Flow characteristics of different rainfall type debris flow based on the HEC-HMS model[J].Hydrogeology and Engineering Geology,2019,0(3):154-154. |
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| Authors: | XIONG Jiang TANG Chuan GONG Lingfeng |
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| Affiliation: | State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu,Sichuan610059, China |
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| Abstract: | In order to explore the characteristics of debris flow discharge under different rainfall patterns, the rainfall data of typical debris flow in Wenchuan earthquake zone were collected and generalized into three rainfall types: three peaks early-arrival type, three peak type and three peaks late-arrival type. By constructing the Gaojia gully watershed model with the HEC-HMS hydrological model and based on the results of clear water flow in the basin, the debris flow under different rainfall patterns was calculated by the rain-flood correction method. The results show that the peak clear water flow rates of the three peaks early-arrival type, three peaks type and three peaks late-arrival type were 33.5 m3/s, 41.5 m3/s and 45.8 m3/s, respectively. The peak flow of debris flow was 166.83 m3/s, 206.67 m3/s and 228.08 m3/s, respectively with the errors of -25.6%, -7.8% and 1.7%, respectively. The runoff of the three patterns of rainfall evolved linearly from the upstream to the gully mouth. As the peak value of rainfall delays its rate of evolution continues to increase, and the growth rate gradually decreases. Debris flow bursts before and after the peak rainfall, which is a rainfall-inducing debris flow. As the peak rainfall delays, the flow growth phase takes a longer time of 5.5 h, 6 h and 9 h, respectively. The recession phase requires a shorter time of 14.5 h, 8 h and 2.5 h, respectively. The results show that the model can provide technical support for debris flow researches in areas without detailed rainfall monitoring data. |
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