基于FREAD溃坝体系的堰塞湖溃决过程反演分析

发布时间：2018-03-16 13:36

  本文选题：溃坝　切入点：BREACH模型　出处：《水利水电技术》2017年09期 　论文类型：期刊论文

【摘要】：为了提出适用于堰塞湖溃决模拟仿真的方法,在系统梳理FREAD溃坝洪水分析体系DWOPER、DAMBRK、BREACH和FLDWAV模型的基础上,对各模型的基本原理、适用条件及优缺点进行了汇总。基于各模型的功能特点,联合使用BREACH溃坝计算模型及FLDWAV洪水演进模型反演了尼泊尔逊克西(Sunkoshi)堰塞坝的溃决过程。结果表明:逊克西堰塞坝溃决过程历时68 min达到溃决洪峰流量1 794 m3/s,考虑到支流入流的情况,溃决洪峰历时154 min演进至下游37.9 km处的库帕瓦加特(Pachuwarghat)水文站,计算流量结果与该水文站实测数据较为一致,从而验证了联合使用BREACH和FLDWAV模型进行堰塞湖溃决计算的合理性和可行性。研究成果可以为制定类似堰塞湖溃决的应急处置方案提供参考。
[Abstract]:In order to put forward a method suitable for simulation of dammed lake outburst, the basic principles of each model are analyzed on the basis of systematically combing the FREAD dam-break flood analysis system (DWOPERERA) DAMBRKU BREACH and FLDWAV model. The applicable conditions, advantages and disadvantages are summarized. Based on the functional characteristics of each model, Combined use of BREACH dam break calculation model and FLDWAV flood routing model, the collapse process of Sunkoshi Weir dam in Nepal is inversed. The results show that the collapse process of Sunkoshi Weir dam in Sunkoshi, Nepal, takes 68 min to reach Hong Feng's discharge of 1 794 m3 / s. In the case of a tributary inflow, At the Kupawagat Pachuwarghat Hydrological Station, which lasted from 154 min to 37.9 km downstream, the calculated flow rate is in good agreement with the measured data of the hydrologic station. Therefore, the rationality and feasibility of the combined use of BREACH and FLDWAV models for the calculation of lake outburst are verified, and the research results can be used as a reference for the formulation of emergency treatment schemes similar to those for the dammed lake outburst.
【作者单位】： 西安理工大学;水电水利规划设计总院;中国水利水电科学研究院;
【基金】：国家重点基础研究发展计划(973)项目(2013CB036403) 流域水循环模拟与调控国家重点实验室开放研究基金项目(IWHR-SKL-201717) 国家重点研发计划课题(2016YFC0401706) 国家自然科学基金项目(51679262)
【分类号】：P642.2;TV122.4
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本文编号：1620148