海绵城市建设中土水特征曲线对产流的影响
- Title:
- Effect of Soil-water Characteristic Curve on Runoff in Sponge City Construction
- 关键词:
- font-size: 10pt; ">产流; 土水特征曲线; 非饱和导水系数; Green-Ampt模型; 海绵城市
- Keywords:
- font-size: 10pt; ">runoff; soil- font-size: 10pt; ">water characteristic curve; unsaturated permeability; Green-Ampt model; sponge city
- 摘要:
-
土壤土水特征曲线是海绵城市建设中源头控制阶段的重要参数，是降雨入渗及产流研究的理论基础。针对海绵城市试点庄河市建设的实际情况，对当地3类土壤进行土水特征曲线测定，拟合计算得到土壤基质吸力、非饱和导水系数方程，结合Green-Ampt改进模型计算各类土壤所处区域在不同降雨强度下的雨水入渗及产流情况。结果表明：土壤入渗能力总体呈现为人工回填土>裸露坡地土>耕种土，人工回填土的入渗率是其他土壤的1.1～4.4倍。在降雨强度为大暴雨等级时，人工回填土的延迟产流时间是其他土壤的1.9~5.8倍；在特大暴雨时，3类土壤短时间内均会产生超渗产流，此时在延缓洪峰时间、控制洪峰流量上没有明显作用。
- Abstract:
-
The soil- water characteristic curve of soil is an important parameter in the source control stage of sponge city construction, and it is the theoretical basis for the study of rainfall infiltration and runoff. According to the actual situation of sponge city construction of Zhuanghe (a pilot sponge city), the soilwater characteristic curves of three local soils were determined, and the soil matrix suction and unsaturated permeability equation were obtained by fitting calculation. Then, the rainfall infiltration and runoff under different rainfall intensities were calculated by using the Green-Ampt improved model. The order of soil infiltration capacity was as follows: manual backfill soil > bare slope soil > tillage soil, and the infiltration rate of the manual backfill soil was about 1.1-4.4 times that of the other soils. During a heavy rain, the delayed runoff time of the manual backfill soil was 1.9-5.8 times that of the other soils. In the case of an extremely heavy rain, all the three kinds of soil would produce excess runoff in a short time, which had no obvious effect on delaying flood peak time and controlling flood peak flow.
相似文献/References:
[1]孙永利,张维,郑兴灿,等.城镇居民人均日生活污水污染物产生量测算之产污规律[J].中国给水排水,2020,36(6):1.
[2]范荣桂,刘娜,尹利鹏,等.污泥厌氧催化快速发酵产VFAs的试验研究[J].中国给水排水,2020,36(11):69.
[3]镇祥华,余琴芳,万年红,等.污水处理厂二级出水深床滤池超深度脱氮研究[J].中国给水排水,2020,36(11):91.
[4]赵美玲,朱涛,冯江,等.水力模型在合流制调蓄池进水管改造中的应用[J].中国给水排水,2020,36(7):114.
[5]朱一文,王文亮.基于水文方法的暴雨调节塘规模计算[J].中国给水排水,2020,36(7):118.
[6]李骏飞,李欢,杨磊三.粤港澳大湾区创新治水模式分享[J].中国给水排水,2020,36(8):1.
[7]李激,王燕,熊红松,等.城镇污水处理厂消毒设施运行调研与优化策略[J].中国给水排水,2020,36(8):7.
[8]赵锡锋,李兴强,李军.好氧颗粒污泥技术中试研究及应用进展[J].中国给水排水,2020,36(8):30.
[9]王建西.PTA2O工艺用于养猪废水处理及其Anammox现象分析[J].中国给水排水,2020,36(8):56.
[10]高海英,邓磊,侯晓庆,等.MBR工艺在西安经开草滩污水处理厂中的应用[J].中国给水排水,2020,36(8):63.
[11]莫俊锋,王文亮,白献宇,等.基于设计暴雨法的CSO调蓄池池容计算方法探讨[J].中国给水排水,2020,36(8):77.
[12]郭健.纳入大直径热力管的综合管廊设计研究[J].中国给水排水,2020,36(8):82.
[13]蒙政成,冼萍,黄付平,等.NCMBR工艺在工业园区污水处理工程中的应用[J].中国给水排水,2020,36(8):88.