[1]林进昌,李江云,吕建新,等.低影响开发设施的调蓄池代用模型研究[J].中国给水排水,2020,36(23):94-100.
LIN Jin-chang,LI Jiang-yun,L Jian-xin,et al.Detention Tank Substitute Model for Low Impact Development Facilities[J].China Water & Wastewater,2020,36(23):94-100.
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LIN Jin-chang,LI Jiang-yun,L Jian-xin,et al.Detention Tank Substitute Model for Low Impact Development Facilities[J].China Water & Wastewater,2020,36(23):94-100.
低影响开发设施的调蓄池代用模型研究
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第36卷
期数:
2020年第23期
页码:
94-100
栏目:
出版日期:
2020-12-01
- Title:
- Detention Tank Substitute Model for Low Impact Development Facilities
- 关键词:
- 低影响开发（LID）设施; LID的调蓄池代用模型; 概化; 评价方法
- Keywords:
- low impact development (LID) facility; detention tank substitute model for LID facilities; generalization; evaluation method
- 摘要:
- 低影响开发（LID）模型因模拟所需参数较多，工程中一般难以实现。为此，依据主要流量关系相似原理提出LID的调蓄池代用模型对排水系统进行概化，在较高精度下实现排水区的雨洪模拟；其次，模拟获得的调蓄容积及出水孔直径，可为LID设施的工程效果提供评价依据。为验证LID设施概化为调蓄池的实际效果，选用了3种典型LID设施进行LID调蓄能力的等效性实验。针对植草沟、渗透铺装以及雨水花园，分别采用坡度为1%、3%、5%和重现期为1年、5年、10年进行交叉实验，纳什效率系数均在0.75以上，均值为0.9，说明采用调蓄池模型替代LID模型进行雨洪模拟是可行的，并给出了评价示例。对于其他未涉及的LID设施类型，其调蓄及径流过程在本质上与调蓄池模型相似，因此同样可根据其入流和出流特征概化为调蓄池模型进行模拟，LID代用模型理论及LID设施工程评价方法具有普遍意义。
- Abstract:
- Low impact development (LID) models are generally difficult to implement in engineering due to the large number of parameters required for simulation. Based on the similarity of main flow relationship, the detention tank substitute model for LID facilities was proposed to generalize the drainage system and simulate stormwater in the drainage area with high precision. Detention volume and outlet hole diameter were obtained by simulation, which could be used to evaluate the derformance of LID dacilities. In order to verify the actual performance of LID facilities generalized into the detention tank, three kinds of typical LID facilities were selected to conduct the equivalent experiment of LID detention capacity, including vegetative swale, permeable pavement and rainwater garden. Cross experiments were carried out with slopes of 1%, 3%, 5% and return periods of 1 year, 5 years, and 10 years, respectively. Nash-Sutcliffe efficiency coefficients were all above 0.75 and the mean value was 0.9, indicating that it was feasible to replace LID model for stormwater simulation by detention tank model. In addition, evaluation examples were given. For other types of LID facilities not involved, the detention and runoff processes were similar to the detention tank in nature. Therefore, it was also possible to generalize the characteristics of inflow and outflow into the detention tank model for simulation, and LID substitute model theory and LID facility engineering evaluation method are universal.
更新日期/Last Update:
2020-12-01