Water Science and Engineering 2010, 3(4) 431-442 DOI:   doi:10.3882/j.issn.1674-2370.2010.04.006  ISSN: 1674-2370 CN: 32-1785/TV

Current Issue | Archive | Search                                                            [Print]   [Close]
Information and Service
This Article
Supporting info
PDF(285KB)
Reference
Service and feedback
Email this article to a colleague
Add to Bookshelf
Add to Citation Manager
Cite This Article
Email Alert
Keywords
High flow, subway tunnel, scouring depth, scouring model, numerical simulation
Authors
CHEN Jun
HONG-WU -TANG
PubMed
Article by Chen,j
Article by Hong-wu,.T

Multi-approach analysis of maximum riverbed scour depth above a subway tunnel

Jun CHEN1,Hong-wu TANG2

1. college of water conservancy and hydropower engineering
2. 1

Abstract

Abstract: When subway tunnels are routed underneath rivers, riverbed scour may expose the structure with potentially severe consequences. Thus it is significant to research the maximum scouring depth to ensure the designed buried depth is adequate. There are a range of methods that may be applied to this problem, including fluvial process analysis, geological structure analysis, scouring formula, scouring model experiment and numerical simulation. However, the applicable range and forecasting precision of these methods vary considerably. In order to quantitatively analyze the characteristics of the different methods, a subway passing underneath a river is selected with the aforementioned five methods used to forecast the maximum scouring depth. The research results show that the fluvial process analysis method was used to characterise the river regime and evolution trend, which were the baseline for researching the scouring depth of the riverbed. The results obtained from the scouring model experiment and the numerical simulation method were reliable, these two methods were suitable to be applied to subways or tunnel projects passing under rivers. The scouring formula method was less accurate precision than the souring model experiment, so it was suitable to be applied to the “lower risk” projects as pipelines. The result of the geological structure analysis was of low precision, and it was suitable to be an assistant research method. To forecast the maximum scouring depth of the riverbed above the subway tunnel, a combination of methods was suggested, and the appropriate analysis method was chosen with respect to the local conditions.

Keywords High flow, subway tunnel, scouring depth, scouring model, numerical simulation  
Received 2010-07-13 Revised 2010-11-04 Online: 2011-10-10 
DOI: doi:10.3882/j.issn.1674-2370.2010.04.006
Fund:

Major Science and Technology Program for Water Pollution Control and Treatment in China;国家自然科学基金资助项目;国家自然科学基金资助项目

Corresponding Authors: Jun CHEN
Email: chenjunhhu@hhu.edu.cn
About author:

References:
Ataie-Ashtiani, B., Baratian-Ghorghi, Z., and Beheshti, A. A. 2010. Experimental investigation of clear-water local scour of compound piers. Journal of Hydraulic Engineering, 136(6), 343-351. [doi: 10.1061/(ASCE)0733-9429(2010)136:6(343)]
Bolduc, L. C., Gardoni, P., and Briaud, J. 2008. Probability of exceedance estimates for scour depth around bridge piers. Journal of Geotechnical and Geoenvironmental Engineering, 134(2), 175-184. [doi: 10.1061/(ASCE)1090-0241(2008)134:2(175)]
Demir, S. T., and Garcia, M. H. 2007. Experimental studies on burial of finite-length cylinders under oscillatory flow. Journal of Waterway, Port, Coastal, and Ocean Engineering, 133(2), 117-124. [doi: 10.1061/(ASCE)0733-950X(2007)133:2(117)]
Dong, Z. Z. 2009. Integrated to determine the buried depth of river-crossing pipeline. Water Conservancy Science and Technology and Economy, 15(8), 677-678. (in Chinese)
Dou, G. R., Dong, F. W., and Dou, X. B. 1995. The sediment carrying capacity of tidal currents and waves. Chinese Science Bulletin, 40(5), 443-446. (in Chinese)
Highway Planning and Design Institute, Ministry of Communications (HPDIMC). 1991. Specifications for Survey and Design of Highway Bridge Site (JTJ 062-91). Beijing: China Communication Press. (in Chinese)
Huang, J. C., Wang, Z. Y., and Liu, Z. P. 1998. Flow Scour and Pipeline’s Buried. Beijing: Chinese Building Material Industry Publishing House. (in Chinese)
Koustuv, D., and Susanta, C. 2010. Bridge pier scour in clay-sand mixed sediments at near-threshold velocity for sand. Journal of Hydraulic Engineering, 136(9), 597-609. [doi:10.1061/(ASCE)HY.1943-7900. 0000221]
Lai, J. S., Chang, W. Y., and Yen, C. L. 2009. Maximum local scour depth at bridge piers under unsteady flow. Journal of Hydraulic Engineering, 135(7), 609-614. [doi: 10.1061/(ASCE)HY.1943-7900.0000044]
Liang, D. F., and Cheng, L. 2005. Numerical model for wave-induced scour below a submarine pipeline. Journal of Waterway, Port, Coastal, and Ocean Engineering, 131(5), 193-202. [doi:10.1061/ (ASCE)0733-950X(2005)131:5(193)]
Lu, D., and Cai, C. S. 2010. Bridge scour: Prediction, modeling, monitoring, and countermeasures—Review. Practice Periodical on Structural Design and Construction, 15(2), 125-134. [doi:10.1061/(ASCE) SC.1943-5576.0000041]
Saleh, A. W. 1993. Estimation of channel depth during floods by canonical correlation analysis. Journal of Hydraulic Engineering, 119(1), 81-94. [doi:10.1061/(ASCE)0733-9429(1993)119:1(81)]
Shi, Y. B., Lu, H. Y., Yang, Y. P., and Cao, Y. 2008. Prediction of erosion depth under the action of the exceptional flood in the river reach of a tunnel across the Qiantang Estuary. Advances in Water Science, 19(5), 685-692. (in Chinese)
Xie, X. P., Wang, Z. Y., and Melching, C. S. 2009. Formation and evolution of the Jiuduansha Shoal over the past 50 years. Journal of Hydraulic Engineering, 135(9), 741-754. [doi:10.1061/(ASCE)0733-9429 (2009)135:9(741)]
Xie, Z. T., Zhang, X. F., Tan, G. M., and Yang, F. L. 2006. Numerical simulation of 2-D horizontal cooling water discharge in generalized curvilinear coordinate. Journal of Hydrodynamics (Series B), 18(1), 91-96.
Yan, W. W., and Jin, D. G. 2008. Research of Flood Routing Simulation of Fenghuahe River. Ningbo: Ningbo Hydraulic and Hydroelectric Plan, Design and Research Institute. (in Chinese)
Zhao, M., and Cheng, L. 2008. Numerical modeling of local scour below a piggyback pipeline in currents. Journal of Hydraulic Engineering, 134(10), 1452-1463. [doi:10.1061/(ASCE)0733-9429(2008)134:10 (1452)]
Similar articles

Copyright by Water Science and Engineering