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首页> 外文期刊>Water and Energy International >SIMULATION STUDY FOR CHANNELIZATION OF THE BRAHMAPUTRA RIVER IN ASSAM
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SIMULATION STUDY FOR CHANNELIZATION OF THE BRAHMAPUTRA RIVER IN ASSAM

机译：阿萨姆邦布拉马普特拉河变质的模拟研究

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Brahmaputra river system is very complex because of its braided flow pattern and high sediment load. It is one of the most braided river in the world in which the width of the river extends up to 22 km.The first part of the study includes developing a mathematical model for the river. Sediment transport capacity of the river has been done by using different method of transportation functions like Ackers-White, Yang and Engelnd-Hansen methods. The result shows that Yang's method of transportation function gives a better result for Brahmaputra River when it is compared with the other transportation functions. From these transportation functions Ackers-White method of transportation function gives high value of sediment transport capacity and high value of change in channel invert.The second part of the study is to channelize the river by putting river training structures at selected nodal points. These nodal points are selected based on the channel geometry and property in which channelization of the river can be possible. Some cross sections of the river are much braided in nature and it may not be economical to confine the flow over the whole reach of the river. Flow guide bunds are adopted as a river training structure which used to confine and guide the flow to a gentle channel. Especially these structures are constructed on the banks of the river at bridge site locations to guide and confine flow. Other structures which are adopted as channelization work are closing of secondary channels by putting bed bars, permeable spurs, porcupine screens, Jack Jetty etc.
机译：雅鲁藏布江水系由于辫状流型和高泥沙量而非常复杂。它是世界上最辫状的河流之一，其河流宽度长达22公里。研究的第一部分包括为该河流建立数学模型。河流的泥沙输送能力是通过使用不同的输送功能方法来完成的，如Ackers-White，Yang和Engelnd-Hansen方法。结果表明，杨的运输函数方法与其他运输函数相比，对布拉马普特拉河具有更好的效果。从这些输运函数出发，Ackers-White输运函数方法提供了很高的泥沙输移能力值和高的河道倒置变化值。研究的第二部分是通过将河流训练结构置于选定的节点来渠化河道。这些节点是根据河道的几何形状和属性进行选择的，河流的河道化是可能的。河流的某些横断面本质上是辫状的，将流量限制在整个河段可能并不经济。导流堤被用作河流训练结构，用于将流量限制并引导至平缓的河道。特别是这些结构是在桥梁工地的河岸上建造的，以引导和限制水流。用作渠道化工作的其他结构是通过放置床栏，渗透性骨刺，豪猪筛网，杰克码头等关闭次要渠道。

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