Kajian Pengaruh Sistem Drainase dan Ruang Terbuka Hijau Eksisting pada Kawasan Ruas Jalan Utama Kota Malang (Suatu Upaya Pengendalian Genangan Di Daerah Perkotaan)

Kajian Pengaruh Sistem Drainase dan Ruang Terbuka Hijau Eksisting pada Kawasan Ruas Jalan Utama Kota Malang (Suatu Upaya Pengendalian Genangan Di Daerah Perkotaan)The Influence of Existing Drainege System Green Open Space to The Flooding in The Main Roads of Malang City (A Flooding Control Efforts In Urban Areas)Laksni Sedyowati1 & Ery Suhartanto21Program Doktor Teknik Sipil, Minat Sumberdaya Air, Universitas Brawijaya,2Jurusan Teknik Pengairan, Fakultas Teknik, Universitas BrawijayaAlamat korespondensi : Alamat korespondensi : Jln. MT. Haryono, No 167 MalangEmail: 1)[email protected] new paradigm of urban drainage system puts the city infrastructure based on the concept of environmentally sound drainage system or sustainable. It is necessary to retain the rain water in the area to enlarge the amount of water that infiltrate into the soil through natural or artificial recharge area. Research problem is how the influence of the existing drainage system and the green open space (RTH) to the runoff discharge. The study design is in the form of field observations and analytical activities: analysis of the characteristics of rain with a variety of 10-year historical data; land cover analysis and capacity of the existing green space; analysis of the capacity of the existing drainage system; analysis of the total runoff discharge and discharge runoff that are not controlled by the existing drainage system and RTH. The results showed that the total capacity of existing drainage systems and green space of 36,066 m3/sec. The amount of discharge that is not controlled on the time period of 5, 10, 25, 50 and 100 year, respectively: 11.95 m3/s; 20.28 m3/s; 30.82 m3/s; 38.68 m3/s; 46.56 m3/s. Uncontrolled runoff discharge causing flooding on roads in the study area with the water level between 22-35 cm.Keywords: Sustainable Urban Drainage System, Green Open Space, Runoff DischargeAbstrakParadigma baru sistem drainase menempatkan drainase perkotaan sebagai prasarana kota yang dilandaskan pada konsep drainase yang berwawasan lingkungan atau berkelanjutan. Untuk itu perlu diupayakan agar air hujan yang jatuh ditahan terlebih dulu untuk memperbesar jumlah air yang meresap ke dalam tanah melalui daerah resapan alamiah maupun buatan. Permasalahan yang akan dikaji dalam penelitian ini adalah bagaimana pengaruh sistem drainase dan ruang terbuka hijau (RTH) eksisting terhadap debit limpasan, sebagai dasar pengembangan RTH yang merupakan alternatif sistem drainase berkelanjutan. Metode penelitian berupa observasi lapangan dan analitik dengan tahapan kegiatan: analisis karakteristik hujan dengan berbagai kala ulang menggunakan data historis 10 tahun terakhir; analisis tutupan lahan dan kapasitas ruang terbuka hijau eksisting; analisis kapasitas sistem drainase eksisting; analisis debit limpasan total dan debit limpasan yang tidak dikendalikan oleh sistem drainase dan RTH eksisting. Hasil penelitian menunjukkan bahwa apasitas total sistem drainase dan RTH eksisting sebesar 36,066 m3/detik. Besarnya debit yang tidak dikendalikan pada kala ulang 5 thn, 10 thn, 25 thn, 50 thn dan 100 thn berturut-turut sebesar 11,95 m3/dt; 20,28 m3/dt ; 30,82 m3/dt; 38,68 m3/dt; 46,56 m3/dt. Debit limpasan yang tidak terkendali menyebabkan terjadinya genangan di ruas jalan pada daerah studi dengan tinggi genangan antara 22 - 35 cm.Kata kunci: sistem drainase berkelanjutan, ruang terbuka hijau, debit limpasan

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COMMUNITY PERSPECTIVE OF SUSTAINABLE URBAN DRAINAGE SYSTEM TECHNIQUES: A CASE STUDY OF NHIEU LOC – THI NGHE SUB-BASIN IN HO CHI MINH CITY, VIET NAM

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/56/2c/13031 ◽

2018 ◽

Vol 56 (2C) ◽

pp. 64-71

Author(s):

Nguyen Hoang My Lan

Keyword(s):

Open Space ◽

Rainwater Harvesting ◽

Hypothesis Test ◽

Drainage System ◽

Weather Conditions ◽

Statistical Hypothesis ◽

Social Aspect ◽

Urban Drainage ◽

Urban Drainage System ◽

Wide Range

With the philosophy of stimulating ways that nature behaves under extreme weather conditions, Sustainable Urban Drainage System (SUDS) has been internationally recognized as one of the most sustainable approaches to minimizing the impacts of flooding on urban development coupled with the achievement of multiple benefits on environmental and social aspects. In this paper, the social aspect of SUDS is examined through the community’s acceptance of a wide range of SUDS techniques, including Green Roof (GR), Rainwater Harvesting (RWH), Pervious Pavement (PP), Green Open Space (GOP), and Pervious Parking Lot (PPL). Data were collected through a social survey of community responses to above SUDS applications in Nhieu Loc – Thi Nghe sub-basin from November 2016 to March 2017, then SPSS software was used to analyze data and test statistical hypothesis. The results show that the most preferred SUDS technique is PP, followed by PPL, GOP, RWH and GR respectively. Through statistical hypothesis test, the relationship exists between (1) the community’s acceptability to proposed SUDS techniques and district as well as gender; (2) the community’s acceptance for and their knowledge of SUDS applications; and (3) the priority of SUDS’s benefits between the districts and acceptability as well as understanding of SUDS applications.

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Integrated modelling: comparison of state variables, processes and parameters in sewer and wastewater treatment plant models

Water Science & Technology ◽

10.2166/wst.1997.0235 ◽

1997 ◽

Vol 36 (5) ◽

pp. 373-380 ◽

Cited By ~ 2

Author(s):

C. Fronteau ◽

W. Bauwens ◽

P.A. Vanrolleghem

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Drainage System ◽

Integrated Modelling ◽

Urban Drainage ◽

State Variables ◽

Sewer System ◽

Wastewater Treatment Process ◽

Urban Drainage System

All the parts of an urban drainage system, i.e. the sewer system, the wastewater treatment plant (WWTP) and the river, should be integrated into one single model to assess the performance of the overall system and for the development of design and control strategies assisting in its sustainable and cost effective management. Existing models for the individual components of the system have to be merged in order to develop the integrated tool. One of the problems arising from this methodology is the incompatibility of state variables, processes and parameters used in the different modelling approaches. Optimisation of an urban drainage system, and of the wastewater treatment process in particular, requires a good knowledge of the wastewater composition. As important transformations take place between the emission from the household and the arrival at the treatment facility, sewer models should include these transformations in the sewer system. At present, however, research is still needed in order to increase our knowledge of these in-sewer processes. A comparison of the state variables, processes and parameters has been carried out in both sewer models (SMs) and activated sludge models (ASMs). An ASM approach is used for the description of reactions in sewer models. However, a difference is found in the expression for organic material (expressed in terms of BOD) and heterotrophic biomass is absent as a state variable, resulting in differences in processes and parameters. Reconciliation of both the models seems worthwhile and a preliminary solution is suggested in this paper.

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Modelling Pluvial Flooding in Urban Areas Coupling the Models Iber and SWMM

Water ◽

10.3390/w12092647 ◽

2020 ◽

Vol 12 (9) ◽

pp. 2647

Author(s):

Esteban Sañudo ◽

Luis Cea ◽

Jerónimo Puertas

Keyword(s):

Urban Areas ◽

Flow Model ◽

Overland Flow ◽

Drainage System ◽

Urban Drainage ◽

Dynamic Link Library ◽

Storm Water Management Model ◽

Urban Street ◽

Sewer Network ◽

Overland Flow Model

Dual urban drainage models allow users to simulate pluvial urban flooding by analysing the interaction between the sewer network (minor drainage system) and the overland flow (major drainage system). This work presents a free distribution dual drainage model linking the models Iber and Storm Water Management Model (SWMM), which are a 2D overland flow model and a 1D sewer network model, respectively. The linking methodology consists in a step by step calling process from Iber to a Dynamic-link Library (DLL) that contains the functions in which the SWMM code is split. The work involves the validation of the model in a simplified urban street, in a full-scale urban drainage physical model and in a real urban settlement. The three study cases have been carefully chosen to show and validate the main capabilities of the model. Therefore, the model is developed as a tool that considers the main hydrological and hydraulic processes during a rainfall event in an urban basin, allowing the user to plan, evaluate and design new or existing urban drainage systems in a realistic way.

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