王〓欣,詹〓健,韩玉龙,徐雪婧.基于SWMM模型的住宅区层级式雨水系统构建[J].水电能源科学,2018,36(6):25-28
基于SWMM模型的住宅区层级式雨水系统构建
Discussion on Construction of Tiered Rainwater Drainage System in Residential Area Based on SWMM
  
DOI:
中文关键词:  层级式雨水系统  住宅区  SWMM模型  径流控制  海绵城市
英文关键词:tiered rainwater drainage system  residential area  SWMM model  runoff control  sponge city
基金项目:江西省水利厅科技课题(KT201232)
作者单位
王〓欣,詹〓健,韩玉龙,徐雪婧 南昌大学 建筑工程学院 江西 南昌 330031 
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中文摘要:
      为研究层级式雨水系统的排水效果,以江西省南昌市某住宅小区为例,构建了由基本单元入渗系统、庭院逐级削减系统、地块层层滞蓄系统和小区末端调蓄系统组成的层级式雨水系统。利用SWMM模型模拟层级式雨水系统方案与传统方案在不同重现期降雨条件下对径流总量、峰值流量和节点溢流的控制效果,并进行整体性分析。结果表明,采用层级式雨水系统后,降雨重现期为0.5、1、2、3、5、10 a时的径流总量削减率分别增加了63.20%、58.02%、52.43%、49.61%、44.46%、39.17%;径流峰值分别削减了56.44%、57.79%、58.65%、59.12%、59.36%、59.72%;径流峰值时刻分别延迟了9、8、6、4、3、1 min。层级式雨水系统具有较好的径流控制效果,能减少径流总量,削减峰值流量,延缓峰值时间,改善节点溢流,保证研究区域5年一遇降雨不发生积水,有效缓解城市排水问题。
英文摘要:
      In order to study the drainage effect of tiered rainwater drainage system, the tiered drainage rainwater system consisting of basic unit infiltration system, courtyard level reduction system, decentralized storage system of blocks and storage system at the end of residential area was built in a certain residential area in Nanchang City. The SWMM model was used to simulate the effect of the tiered drainage rainwater system and the conventional scheme on the total runoff, peak flow and node overflow under different rainfall conditions. After adopting tiered rainwater drainage system, the results indicate that when the rainfall intensities were 0.5, 1, 2, 5, 10 a storms, the total reduction rate of runoff increased by 63.20%, 58.02%, 52.43%, 49.61%, 44.46% and 39.17%; The flood peak reduction rates was 56.44%, 57.79%, 58.65%, 59.12%, 59.36% and 59.72%; The flood peak time was delayed by 9, 8, 6, 4, 3, 1 min; Tiered rainwater drainage system has better runoff control effect, which can reduce the total runoff and the peak flow, delay the peak time and improve the node overflow. Thus, it ensures that the study area has no stagnant water under 5 years rainstorm, and alleviate the problem of urban drainage effectively.
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