HYDROGRAPH PERFORMANCE OF BENDUNGWATERSHEED IN PALEMBANG CITY

Syarifudin, Achmad and Syarif, Amirudin (2016) HYDROGRAPH PERFORMANCE OF BENDUNGWATERSHEED IN PALEMBANG CITY. In: Forum in Research, Science, and Technology "FIRST", October 18th 2016, Palembang South Sumatera.

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Abstract

During the rainy season, floods has become routine events in several cities in Indonesia. Various reasons to trigger the occurrence of flooding, among other drainage network system capacity is decreased, increasing water flow, or a combination of both. The capacity of the drainage channel has been calculated based on the design criteria to accommodate the flow of water occurs so that the area is not experiencing inundation or flooding. The reduced system capacity due to, among others, many precipitates, physical damage or their network systems and illegal buildings on the system network. While the cause of the discharge increases, among others, high rainfall out of habit, changes in land-use, environmental damage to the watershed in a region. Cases like mentioned above also occur in Bendung watersheed, so it is necessary to study the drainage network system performance evaluation based on the concept of sustainable drainage based on community participation. Good and bad, high and low of the drainage network system performance is large determined by community participation in management, especially with the lack or absence of funds from Palembang city government for the management of drainage network system. Drainage system performance can be evaluated from the technical aspects as well as non-technical. One technical aspect is the frequency analysis to look at the picture unit hydrograph. Analytical results from this study may be that the maximum flow of 25 m3 per sec at peak hours at the time of 4.8 hours and then slowly starting to go down at a time to 24 hours. Keywords: inter relation, drainage network system, unit hydrograph I. INTRODUCTION he flood disaster became a regular phenomenon in the rainy season which is spread in different watersheds in most region of Indonesia. Total incidence of flooding in the rainy season over the last 3 years as well as the increasing number of human casualties and loss of property and facilities from public / social, transport infrastructure and infrastructure for agriculture / irrigation.. In addition to the problem of precipitation as factors, the incidence of disasters cannot to be separating from environmental damages to ecosystems that occur in the watershed and poor management of water resources. Their land damage may lead to increased surface runoff coefficient greater. The area upstream watershed is an area of a particle will be increasingly vulnerable to drought, precisely the opposite downstream areas prone to flooding. Flooding is a flow that causing economic losses or even cause loss of life. [2] Flow can occur because of the outburst in the area in the right or left of the river due to river channel does not have enough capacity for the flow rates through. Flooding is not only experience by urban area located in the lowlands, even experienced area located in the highlands. Flooding or inundation in a region occurs when the system that serves to accommodate the inundation was not able to accommodate the discharge flow, it is the result of three possibility occur : the capacity of the system to decrease the flow rate of water increases, or a combination of both. Understanding the system here is a system of drainage network in a region. [10] While the drainage system can be generally defined as a series of

Item Type: Conference or Workshop Item (Paper)
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Law, Arts and Social Sciences > School of Management
Depositing User: Mr Amirudin Syarif
Date Deposited: 04 Aug 2017 23:49
Last Modified: 04 Aug 2017 23:49
URI: http://eprints.binadarma.ac.id/id/eprint/3385

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