沿江圩区局部洼地排涝模数关联因子分析及应用

发布时间：2018-05-07 21:55

本文选题：局部洼地 + 排涝模数　；参考：《排灌机械工程学报》2016年03期

【摘要】：针对局部洼地排涝特点,以扬州江都沿江开发区为例,通过排涝水文分析计算得到排涝模数与排涝面积、水面率、调蓄水深、暴雨重现期4种关联因子之间的关系,选取典型区对局部洼地涝灾进行成因分析,并在此基础上提出圩区内局部洼地涝灾的防治措施.结果表明:排涝面积与排涝模数的偏相关系数为-0.905,相关性最大;局部洼地排涝面积小,洪水汇流速度快,洪峰径流模数和排涝模数较大;局部洼地区缺乏小型河网、河流间距过大、水系布置不合理和采用排涝模数较低,是涝灾频发的主要原因.以关联因子分析和成因分析为基础,提出了通过缩小河流间距、增加水面率、充分发挥河道的调蓄作用等措施以防治涝灾的产生,并且提出了符合圩区局部洼地水情特征的一种排水管网与河道布置模式.
[Abstract]:According to the characteristics of local drainage, taking Yangzhou Jiangdu River Development Zone as an example, the relationship between drainage modulus and drainage area, water surface rate, water storage depth and rainstorm recurrence period is obtained by hydrological analysis. Based on the analysis of the causes of local waterlogging in typical areas, the prevention and control measures of local waterlogging in polder areas are put forward. The results show that the partial correlation coefficient between drainage area and drainage modulus is -0.905, the correlation coefficient is the largest, the drainage area of local depression is small, the speed of flood confluence is fast, the Hong Feng runoff modulus and drainage modulus are large, and the small river network is lacking in local depression area. The main reasons for the frequent waterlogging are that the river spacing is too large, the drainage system arrangement is unreasonable and the drainage modulus is low. Based on the analysis of correlation factor and cause of formation, this paper puts forward some measures to prevent waterlogging by reducing the distance between rivers, increasing the water surface rate, giving full play to the regulation and storage of the river, and so on. A drainage pipe network and river course arrangement model which accords with the characteristics of local depressions in polder area is put forward.
【作者单位】：河海大学水利水电学院;江苏省水利科学研究院;
【基金】：江苏省2015年度普通高校研究生实践创新计划项目(2015B43014)
【分类号】：TU992

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