發(fā)布時(shí)間：2018-03-16 05:02

  本文選題：SWMM　切入點(diǎn)：鴻業(yè)市政管線(xiàn)　出處：《青島理工大學(xué)》2016年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：隨著城市的開(kāi)發(fā),城市的不透水下墊面比例增大,使得徑流量明顯增大,洪澇災(zāi)害問(wèn)題嚴(yán)重,同時(shí)老城區(qū)合流制排水系統(tǒng)的改造十分困難;另外,由于綠化性質(zhì)的土地減少,截留凈化有機(jī)物的能力減弱,雨水沖刷地面會(huì)攜帶大量污染物質(zhì),直接溢流進(jìn)入河道,嚴(yán)重污染河流。因此,提倡新型的雨水管理理念成為人們當(dāng)務(wù)之急,新型的雨水管理模式既能減少改造老城區(qū)又能減少新城區(qū)修建雨水管網(wǎng)造價(jià),于是“低影響開(kāi)發(fā)(LID)”這種新型雨水管理理念被人們提出。本文以J市新城區(qū)雨水管網(wǎng)系統(tǒng)為背景,借助鴻業(yè)市政管線(xiàn)9.0快速導(dǎo)入SWMM的方式,建立了現(xiàn)狀模型、常規(guī)開(kāi)發(fā)模型、加入雨水花園開(kāi)發(fā)模型、加入透水鋪裝開(kāi)發(fā)模型和組合LID開(kāi)發(fā)模型。模型準(zhǔn)確性的關(guān)鍵在于參數(shù)率定。本文采用實(shí)測(cè)3場(chǎng)不同級(jí)別的降雨來(lái)進(jìn)行模擬率定,利用擾動(dòng)分析法對(duì)水文和水質(zhì)模塊進(jìn)行參數(shù)靈敏度分析。結(jié)果表明:在水文方面,對(duì)SWMM模型峰值流量最敏感的參數(shù)依次是N-imperv(不透水區(qū)曼寧系數(shù)),Des-imperv(不透水區(qū)洼地蓄水深度)和Des-perv(透水區(qū)洼地蓄水深度);在水質(zhì)方面,對(duì)于污染物積累模塊,排放口排放COD峰值濃度最敏感的參數(shù)依次是道路最大累積量,道路速率常數(shù),屋面最大累積量和屋面速率常數(shù)。運(yùn)用SWMM對(duì)現(xiàn)狀模型、常規(guī)開(kāi)發(fā)建設(shè)模型以及低影響開(kāi)發(fā)建設(shè)模型進(jìn)行模擬對(duì)比,研究不同模型的雨洪控制效果和水質(zhì)變化。結(jié)果表明:(1)常規(guī)開(kāi)發(fā)模型的徑流系數(shù)、洪峰流量、超負(fù)荷的檢查井和管道數(shù)及有機(jī)物排放量較現(xiàn)狀都增大;(2)低影響開(kāi)發(fā)建設(shè)模型的徑流系數(shù)、洪峰流量、超負(fù)荷的檢查井、管段數(shù)及有機(jī)物排放量較現(xiàn)狀和常規(guī)模型都有所降低;(3)通過(guò)對(duì)不同低影響開(kāi)發(fā)模型的控制效果分析比較,得出結(jié)論:組合LID透水鋪裝雨水花園;(4)降雨強(qiáng)度越大,低影響開(kāi)發(fā)模型有機(jī)物排放量的峰值出現(xiàn)越早且越大,控制好初期雨水并進(jìn)行有效處理成為低影響開(kāi)發(fā)模式的重要研究方向。(5)在經(jīng)濟(jì)社會(huì)效益方面,LID措施比常規(guī)開(kāi)發(fā)改造方案有很大優(yōu)勢(shì)。本課題的研究對(duì)于J市新城區(qū)雨水管網(wǎng)改造提供了技術(shù)參考,為J市海綿城市建設(shè)提供了一定的理論依據(jù)。
[Abstract]:With the development of the city, the proportion of impermeable underlying surface of the city increases, which makes the runoff obviously increase, the flood disaster is serious, at the same time, it is very difficult to transform the drainage system of the combined flow system in the old urban area. In addition, because of the decrease of the land of greening nature, The ability of intercepting and purifying organic matter is weakened, Rain Water scour the ground will carry a large amount of pollutants, overflow directly into the river, seriously pollute the river. Therefore, it is urgent to advocate a new concept of Rain Water management. The new management mode of Rain Water can not only reduce the cost of rebuilding the old urban area but also reduce the construction cost of the rainwater pipe network in the new urban area, so the new concept of "low impact development LID-" has been put forward by people. The background of this paper is the rainwater pipe network system in the new urban area of J city. With the help of Hongye municipal pipeline 9.0 to quickly import SWMM, the present situation model, conventional development model and Rain Water garden development model are established. The key to the accuracy of the model is the determination of the parameter rate. In this paper, the simulated rate is determined by using the measured rainfall of three different levels, and adding the permeable pavement development model and the combined LID development model, the key to the accuracy of the model lies in the parameter rate determination. The parameter sensitivity analysis of hydrology and water quality module is carried out by using perturbation analysis method. The results show that: in hydrology, The most sensitive parameters to the peak flow of SWMM model are N-imperv (Manning coefficient of impervious area) and Des-perv (depth of water storage in impermeable area) and Des-perv (depth of water storage in low-lying area of impermeable area). The most sensitive parameters of peak COD concentration of discharge outlet are road maximum accumulation, road rate constant, roof maximum accumulation and roof rate constant. The conventional development construction model and the low impact development construction model were simulated and compared to study the rain flood control effect and water quality change of different models. The results show that the runoff coefficient of conventional development model, Hong Feng discharge, The number of overloaded inspection wells and pipelines and the discharge of organic matter are both increased than the present situation.) the low flow coefficient of the development and construction model, the flow rate of Hong Feng, and the overloaded inspection well are affected by the low discharge coefficient of the development and construction model. By analyzing and comparing the control effects of different low impact development models, it is concluded that the rainfall intensity of combined LID permeable surfacing Rain Water Huayuan 4) is higher than that of conventional models. The earlier and larger the peak of organic matter emissions from low-impact development models, It is an important research direction of low impact development mode to control Rain Water in the early stage and deal with it effectively.) the Lid measure has a great advantage over the conventional development and transformation plan in the aspect of economic and social benefits. The research of this subject is of great importance to the new city of J city. The technical reference is provided for the revamping of the regional rainwater pipe network. It provides a theoretical basis for the construction of J City Sponge City.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TU992;TV213.9

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