Sediment transport modelling in wadi Chemora during flood flow events
Sediment transport modelling in wadi Chemora during flood flow events
复制标题
洪水事件期间 Chemora 干河的泥沙输送模型
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Meddi
中科院分区：
文献类型：
--
作者：
A. Berghout;M. Meddi
泥沙输移是一种复杂的现象，具有间歇性、随机性和时空不连续性。由于其规模，它构成了发展的主要制约因素;它降低了大坝的蓄水能力，并降低了附属结构的状态。该研究包括在Wadi Chemora（巴特纳，阿尔及利亚）用HEC-RAS软件模拟沉积物的迁移。为了做到这一点，我们已经使用水文数据（液体流量，固体流量）记录在现有的四个水文站的水平，在流域的干河Chemora，MNT的干河和岩性特征。在结果分析中，我们使用了两个不同的洪水参数（第一个涉及整个流域，第二个-流域的一部分）沿着系统的wadi Chemora（wadi Chemora及其支流）：输沙能力，沉积物的体积交付和离开系统和地区的侵蚀和沉积敏感。
Abstract The sediment transport is a complex phenomenon by its intermittent nature, randomness and by its spatiotemporal discontinuity. By reason of its scale, it constitutes a major constraint for development; it decreases storage capacity of dams and degrades state of ancillary structures. The study consists in modelling the transport of sediments by HEC-RAS software in wadi Chemora (Batna, Algeria). In order to do this, we have used hydrometric data (liquid flows, and solid flows) recorded at level of the four hydrometric stations existing in watershed of wadi Chemora, the MNT of the wadi and lithologic characteristics of the wadi. In the analyses of results we used the parameters from two different floods (the first one involved the whole watershed and the second – a part of the basin) along of system of wadi Chemora (wadi Chemora and its tributaries): sediment transport capacity, volume of sediments delivered to and leaving the system and areas sensitive to erosion and sedimentation.