Multi-approach analysis of maximum riverbed scour depth above subway tunnel
Multi-approach analysis of maximum riverbed scour depth above subway tunnel
复制标题
地铁隧道上方河床最大冲刷深度多途径分析
DOI：
10.3882/j.issn.1674-2370.2010.04.006
复制
发表时间：
2010-12
影响因子：
4
通讯作者：
Chen, Jun
中科院分区：
文献类型：
--
作者：
Dai, Wen-Hong;Tang, Hong-Wu;Li, Zui-Sen;Chen, Jun
摘要 当地铁隧道在河流下方铺设时，河床冲刷可能会使结构暴露，从而可能产生严重后果。因此，确定最大冲刷深度以确保设计的埋深足够是很重要的。
Abstract When subway tunnels are routed underneath rivers, riverbed scour may expose the structure, with potentially severe consequences. Thus, it is important to identify the maximum scour depth to ensure that the designed buried depth is adequate. There are a range of methods that may be applied to this problem, including the fluvial process analysis method, geological structure analysis method, scour formula method, scour model experiment method, and numerical simulation method. However, the application ranges and forecasting precision of these methods vary considerably. In order to quantitatively analyze the characteristics of the different methods, a subway tunnel passing underneath a river was selected, and the aforementioned five methods were used to forecast the maximum scour depth. The fluvial process analysis method was used to characterize the river regime and evolution trend, which were the baseline for examination of the scour depth of the riverbed. The results obtained from the scour model experiment and the numerical simulation methods are reliable; these two methods are suitable for application to tunnel projects passing underneath rivers. The scour formula method was less accurate than the scour model experiment method; it is suitable for application to lower risk projects such as pipelines. The results of the geological structure analysis had low precision; the method is suitable for use as a secondary method to assist other research methods. To forecast the maximum scour depth of the riverbed above the subway tunnel, a combination of methods is suggested, and the appropriate analysis method should be chosen with respect to the local conditions.
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DOI：
--
发表时间：
2008
期刊：
Advances in Water Science
影响因子：
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作者：
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通讯作者：
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DOI：
10.1061/(asce)0733-9429(2008)134:10(1452
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2008-10-01
期刊：
JOURNAL OF HYDRAULIC ENGINEERING-ASCE
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