| 高含沙河流管道穿越冲深设计与计算 |
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| 引用本文： | 秦毅,钱善琪,王冰怀,赵炳刚.高含沙河流管道穿越冲深设计与计算[J].油气储运,2001,20(4):23-27. |
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| 作者姓名： | 秦毅 钱善琪 王冰怀 赵炳刚 |
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| 作者单位： | 1. 西安理工大学水利水电学院
2. 中国石油天然气管道工程有限公司 |
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| 摘 要： | 高含沙河流汛期常常发生大小大沙的高含沙洪水,由于高含沙洪水的性质不同于一般挟沙水流,在涨洪过程中常常出现强烈的河槽冲,在这样的河流上,管道设计埋深是保障穿越工程安全的重要参数之一,它与河流的冲恻深度有关,在长输管道的穿跨越设计规范中,对河道的冲刷计算是沿用60年代初期铁道部门研究提出的“64－1”公式,从工程角度出发,根据高含沙水流特点,对高含沙洪水冲刷的计算方法进行了分析,并对几种常用计算方法进行了理论分析比较和实例资料检验,分析表明,“64－1”公式不适用于高含沙水流条件,提出的以张瑞谨起动流速公式为基础的冲刷计算方法,与实例资料吻合较好。
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| 关 键 词： | 油气管道 穿越工程 高含沙洪水 冲刷 冲深计算 公式 |
Approach to Design Scouring Depth for Pipeline Works through Full-loaded Riv-er, |
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| Qin Yi,Qian Shanqi.Approach to Design Scouring Depth for Pipeline Works through Full-loaded Riv-er,[J].Oil & Gas Storage and Transportation,2001,20(4):23-27. |
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| Authors: | Qin Yi Qian Shanqi |
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| Abstract: | A full-loaded river frequently produces in wet season high peak discharge flow that carries a quite large amount of sediments. Such flow often causes very strong erosion on the river bottom during flood rising,since its behavior is different from ordinary silt carrying flow. Great probability of the erosion arising leads design buried depth to become one of important design parameters for long distance pipeline works to cut through the river in safety. However, the calculation about the scouring has still followed the design standard-"64-1" formula which was established in 1960's for the common circumstance of erosion. This paper, taking the distinguishing feature of hyperconcentration flood into account ,deduced approach to computing probable maximum eroded depth and studied the existing common calculations (including "64-1" formula) both in theoretical and practical cases as well. The conclusions drawn from the study are that "64-1" formula does not apply to the case of hyperconcentration flood and the Zhang Ruijing's initial velocity based approach which was proposed in this paper can fit the practical case well. |
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| Keywords: | full-loaded river hyperconcentration flood probable maximum scouring depth pipeline crossing engineering |
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