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Factor analysis and application of drainage modulus of local depression in polders along Yangtze River |
DUAN Shengpo1, WU Yubai1,2, JIN Qiu2, SHAO Xiaohou1 |
1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2.Jiangsu Water Conservancy Research Institute, Nanjing, Jiangsu 210017, China |
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Abstract Serious waterlogging disasters occur frequently in local depressions of polders along Yangtze River, so that it should be managed at first of the moment. Focused on the local depressions of polders in Jiangdu District, the relationships between drainage modulus, drainage acreage, water surface ratio, depth of river and recurrence period are established based on hydrology analysis and calculation. The reasons of waterlogs occur in a typical local depression are inferred, which were followed by the effective preventive measures. The results indicate that the partial correlation coefficient between drainage modulus and drainage area is -0.905, which has the strongest correlation. Furthermore, flooding peak runoff and waterlogging drainage modulus are larger because of the fast floodwater conflux speed in local depressions. The main reasons for the occurrence of waterlogging disaster in local depressions include a lack of river network, large interval between rivers and small drainage modulus as well as unreasonable layout of drainage system. Based on this analysis, a series of measures are put forward to prevent from waterlogs, namely shrinking the interval between rivers, increasing water surface ratio, fully using regulation and storage capacity of waterway. Finally, a drainage pipe network and a layout of waterways, which are suitable to the hydrologic characteristics of local depressions, are proposed.
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Received: 25 August 2015
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[1]吴贵勤, 王晓亮. 淮河流域除涝形势及洼地治理规划[J]. 中国水利, 2013(13):39-41. WU Guiqin, WANG Xiaoliang. Waterlogging control and lowland improvement in Huaihe river basin[J]. China water resources, 2013(13):39-41.(in Chinese)[2]鞠彬, 李琼芳, 陆国宾, 等. 城市化圩区排涝模数及其与主要影响因子间的关系研究[J]. 中国农村水利水电, 2015(2):38-41,46. JYU Bin, LI Qiongfang, LU Guobin, et al. Research on drainage modulus and its correlation with main impact factors in urbanized polder areas[J]. China rural water and hydropower, 2015(2):38-41,46.(in Chinese)[3]高成, 刘俊, 崔韩, 等. 城镇圩区排涝模数计算方法及其与河道调蓄库容关系研究[J]. 灾害学, 2008,23(3):7-9. GAO Cheng, LIU Jun, CUI Han, et al. Study on drainage-modulus-calculation method and its correlation with the regulation storage in urban diked area[J]. Journal of catastrophology, 2008,23(3):7-9.(in Chinese)[4]郑雄伟, 周芬, 侯云青, 等. 城镇圩区排涝模数与合理水面率研究[J]. 水利水电技术, 2012,43(9):90-94. ZHENG Xiongwei, ZHOU Fen, HOU Yunqing, et al. Study on drainage modulus and reasonable water surface ratio of urban diked area[J]. Water resources and hydropower engineering, 2012,43(9):90-94.(in Chinese)[5]朱岳明, 刘立军. 从排涝角度论平原河网地区水域调蓄能力的重要性[J]. 浙江水利科技, 2005(5):26-27. ZHU Yueming, LIU Lijun. The importance of the capacity of water storage in the plain river network from the perspective of draining[J]. Zhejiang hydrotechnics, 2005(5):26-27.(in Chinese)[6]于畅, 郝曼秋, 高成, 等. 平原城市自排区排涝模数计算方法研究[J]. 水资源与水工程学报, 2014,25(6):184-186. YU Chang, HAO Manqiu, GAO Cheng, et al. Research on calculation method of drainage modulus in plain city[J]. Journal of water resources & water engineering, 2014,25(6):184-186.(in Chinese)[7]周建康, 朱春龙, 罗国平. 太湖流域小圩区设计排涝模数计算[J]. 中国给水排水, 2004,20(12):64-66. ZHOU Jiankang, ZHU Chunlong, LUO Guoping. Calculation for the designed flood drainage modulus in small low-lying region of Taihu lake basin[J]. China water & wastewater, 2004,20(12):64-66.(in Chinese)[8]崔韩, 刘俊, 高成. 圩区排涝模数计算方法研究[J]. 水利学报, 2007,38(S1):461-464. CUI Han, LIU Jun, GAO Cheng. Study on drainage modulus calculation method of diked area[J]. Journal of hydraulic engineering, 2007,38(S1):461-464.(in Chinese) [9]罗文兵, 王修贵, 罗强, 等. 四湖流域下垫面改变对排涝模数的影响[J]. 水科学进展, 2014,25(2):275-281. LUO Wenbing, WANG Xiugui, LUO Qiang. Effects of underlying surface changes on drainage modulus in Four-lake watershed[J]. Advances in water science, 2014,25(2):275-281.(in Chinese)[10]江苏省水文水资源勘测局. 江苏省暴雨洪水图集[G]. 南京:江苏省水文水资源勘测局, 1984.[11]江苏省水文水资源勘测局. 江苏省暴雨参数图集[G]. 南京:江苏省水文水资源勘测局, 2005.[12]吕刚, 高成. 城市圩区与农业圩区排涝计算差异研究[J]. 水电能源科学, 2011,29(2):96-98. LYU Gang, GAO Cheng. Study on differences of drainage calculation between urban and agricultural polders[J]. Water resources and power, 2011,29(2):96-98.(in Chinese)[13]SAHOO S, JHA M K. Groundwater-level prediction using multiple linear regression and artificial neural network techniques: a comparative assessment[J]. Hydrogeology journal, 2013,21(8):1865-1887.[14]JHA M K, SAHOO S. Efficacy of neural network and genetic algorithm techniques in simulating spatio-temporal fluctuations of groundwater[J]. Hydrological processes, 2015,29(5):671-691.[15]室外排水设计规范: GB 50014—2006[S]. 上海:中国计划出版社, 2006. |
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