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首页> 外文学位 >Application of natural channel design principles in conversion of a multiple-thread to single-thread channel on an alluvial fan: McCallum Creek, Alaska.
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Application of natural channel design principles in conversion of a multiple-thread to single-thread channel on an alluvial fan: McCallum Creek, Alaska.

机译：自然通道设计原理在冲积扇上的多线程通道到单线程通道的转换中的应用：阿拉斯加的McCallum Creek。

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McCallum Creek crosses the Trans Alaska Pipeline in the Central Alaska Range near Paxson, Alaska. It was converted from a braided channel on an alluvial fan to a stable single thread channel at the pipeline crossing. Objectives included controlling the position of the channel at the pipeline and minimizing aufeis accumulations through the converted reach. A natural channel design methodology was used, which involves determining the dimension, pattern, and profile of a stable reference reach for the associated valley type and stream type and emulating those characteristics in the design reach. A failure mode analysis was conducted. Mitigative measures were identified for each potential failure mode. The channel was lowered to reduce surface energy loss and associated aufeis accumulations. Performance was good during the 2000 and 2001 seasons. Aufeis accumulations have not recurred. Lessons learned are presented from this and several similar projects constructed along TAPS in 2000 and 2001.
机译：麦卡勒姆克里克（McCallum Creek）在阿拉斯加帕克森附近的阿拉斯加中部山脉穿越Trans Alaska管道。它从冲积扇上的编织通道转换为管道交叉处的稳定单线程通道。目标包括控制通道在管道上的位置，并通过转换后的覆盖范围最大程度地减少音频累积。使用了自然渠道设计方法，该方法涉及确定关联的山谷类型和河流类型的稳定参考河段的尺寸，样式和剖面，并在设计河段中模拟那些特征。进行了故障模式分析。确定了每种潜在故障模式的缓解措施。降低通道以减少表面能损失和相关的音频积累。在2000年和2001年的季节里表现良好。 Aufeis的积累没有再次发生。从此以及在2000年和2001年沿TAPS构筑的几个类似项目中介绍的经验教训。

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