[1]林進昌,李江云,呂建新,等.低影響開發(fā)設施的調(diào)蓄池代用模型研究[J].中國給水排水,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.
低影響開發(fā)設施的調(diào)蓄池代用模型研究
中國給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期數(shù): 2020年第23期 頁碼: 94-100 欄目: 出版日期: 2020-12-01
- Title:
- Detention Tank Substitute Model for Low Impact Development Facilities
- 關鍵詞:
- 低影響開發(fā)（LID）設施; LID的調(diào)蓄池代用模型; 概化; 評價方法
- Keywords:
- low impact development (LID) facility; detention tank substitute model for LID facilities; generalization; evaluation method
- 摘要:
- 低影響開發(fā)（LID）模型因模擬所需參數(shù)較多，工程中一般難以實現(xiàn)。為此，依據(jù)主要流量關系相似原理提出LID的調(diào)蓄池代用模型對排水系統(tǒng)進行概化，在較高精度下實現(xiàn)排水區(qū)的雨洪模擬；其次，模擬獲得的調(diào)蓄容積及出水孔直徑，可為LID設施的工程效果提供評價依據(jù)。為驗證LID設施概化為調(diào)蓄池的實際效果，選用了3種典型LID設施進行LID調(diào)蓄能力的等效性實驗。針對植草溝、滲透鋪裝以及雨水花園，分別采用坡度為1%、3%、5%和重現(xiàn)期為1年、5年、10年進行交叉實驗，納什效率系數(shù)均在0.75以上，均值為0.9，說明采用調(diào)蓄池模型替代LID模型進行雨洪模擬是可行的，并給出了評價示例。對于其他未涉及的LID設施類型，其調(diào)蓄及徑流過程在本質(zhì)上與調(diào)蓄池模型相似，因此同樣可根據(jù)其入流和出流特征概化為調(diào)蓄池模型進行模擬，LID代用模型理論及LID設施工程評價方法具有普遍意義。
- 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
