| 于森,张书函,邸苏闯,周星,葛俊,肖冰琦.基于物理模型实验的城市道路雨水口平立结合改造对积水防涝影响研究[J].水利学报,2022,53(7):854-861 |
| 基于物理模型实验的城市道路雨水口平立结合改造对积水防涝影响研究 |
| Effect of combined flat and vertical renovation of urban road gullies on surface water flooding prevention based on physical model experiments |
| 投稿时间：2022-03-29 修订日期：2022-07-13 |
| DOI：10.13243/j.cnki.slxb.20220230 |
| 中文关键词: 城市道路 雨水口 雨箅子 平立结合改造 积水内涝 模型试验 |
| 英文关键词: urban road|gully|rain grate|horizontal and vertical combination of transformation|surface water flooding|model experiment |
| 基金项目:北京市中心城区典型积水点内涝原因诊断与系统化治理关键技术研究(SK-2020-001-FZS) |
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| 中文摘要: |
| 道路雨水口是城市排水系统的重要组成部分,其泄流能力直接影响城市道路的积水程度。北京在"十四五"期间将对全市23万处雨水口进行平立结合改造。为保障雨水口改造的效果,开展了偏沟式雨水口和联合式雨水口物理模型试验。通过377组工况试验,研究了雨水口是否按规范要求比周边地面下沉3 cm、雨箅子形式、雨箅子堵塞程度、雨水管道淤堵程度、道路积水深度等因素对雨水口收水率和泄水能力的影响。结果表明:①雨水口箅面标高是否按规范下沉对道路积水内涝影响较大。②在排水管道能力充足的情况下不同雨箅子形式对下沉雨水口的收水能力影响不大。③道路积水一定深度后雨水口的过流能力决定于与其连接的雨水管道自身的排水能力。④雨箅子堵塞情况下,联合式雨水口的泄流能力要强于偏沟式雨水口。⑤联合式雨水口的抗堵塞能力明显优于偏沟式雨水口。依据实验结果提出了通过雨水口平立结合改造治理积水内涝的建议,研究成果可为道路雨水排水系统的设计、建设和改造提供理论参考和技术支撑。 |
| 英文摘要: |
| The road gully is an important component of the urban drainage system,its discharge capacity directly affects the degree of water accumulation on urban road surface.The city's 230,000 rain grates will be renovated through the combination of horizontal and vertical during the 14th Five-Year Plan period in Beijing.In order to guarantee the effect of gully reformation,the physical model test of flat grate gully rainwater inlet and the flat-standing combined gully was carried out.Through 377 working condition tests,the influences of factors (such as whether the rainwater intakes sink 3cm more than the surrounding ground according to the standard requirements,the form of rain grate,the degree of blockage of rain grate,the degree of blockage of rain pipe and the typical water depth of road) on the water collecting rate and drainage capacity of rainwater intakes are studied.The results show that:① Whether the grate surface elevation is sunk by 3cm as standard had a greater impact on the surface water flooding of the road.② Different grate forms have little effect on the water collection capacity of sunken rain-water inlets.③ The overflow capacity of rainwater inlet after a certain depth of road surface water flooding is deter-mined by the connection pipe overflow capacity.④ The form of gully has a significant effect on the drainage capacity when the grate is clogged.⑤ The anti-clogging ability of the flat-standing combined gully is significantly better than that of the flat type gully.Based on the experimental results,some suggestions are proposed to reduce and control surface water flooding through the combination of gully level and elevation.This result can provide theoretical reference and technical support for the design,construction and modification of road stormwater drainage systems. |
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