Volume 6, Issue 2 (8-2014)
jorar 2014, 6(2): 0-0 |
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Azar A, Sharifi R, Panahi A. Reducing flood damage by determining the boundaries and bed of the Mehranroud in Tabriz. jorar 2014; 6 (2)
URL: http://jorar.ir/article-1-182-en.html
URL: http://jorar.ir/article-1-182-en.html
Instructor, Department of Architecture and Urban Planning, Islamic Azad University, Maragheh Branch, Maragheh, Iran
Abstract: (4326 Views)
INTRODUCTION: One of the areas that is strongly affected by urban activities and is always at risk of non-engineering and non-technical changes and developments is the riverbeds, streams, and waterways that pass through the city limits, especially large cities and metropolises, and play a fundamental role in draining surface water in cities.
METHOD: This research is descriptive and analytical and is considered an applied research in terms of research objectives, and geographic information system tools were used. The aim of the research is to determine vulnerable and sensitive areas located in the river boundary.
FINDINGS: Through field surveys and existing maps, it was determined using GIS that approximately 483,242 square meters of unauthorized buildings have been constructed in the river boundary, which in some cases have even advanced into the river bed. In this research, sensitive and vulnerable areas in the boundary were identified and necessary solutions were presented to reduce damage.
CONCLUSION: Considering the hydraulic wave coefficient of the meandering Mehran Roud, which is 1.2, which indicates that it is wavy, and the amount of possible flood that can occur with a 50-year return period and a probability of 2%, equivalent to 8.82 cubic meters per second, it is necessary to consider the area that is submerged in a flow of 90 cubic meters per second in the case of any equipment and construction operations along the course of this river. It was also found that 483,242 square meters of various land uses in Tabriz city are located in the floodplain of Mehran Roud, of which more than 23 percent of the total land uses are residential.
METHOD: This research is descriptive and analytical and is considered an applied research in terms of research objectives, and geographic information system tools were used. The aim of the research is to determine vulnerable and sensitive areas located in the river boundary.
FINDINGS: Through field surveys and existing maps, it was determined using GIS that approximately 483,242 square meters of unauthorized buildings have been constructed in the river boundary, which in some cases have even advanced into the river bed. In this research, sensitive and vulnerable areas in the boundary were identified and necessary solutions were presented to reduce damage.
CONCLUSION: Considering the hydraulic wave coefficient of the meandering Mehran Roud, which is 1.2, which indicates that it is wavy, and the amount of possible flood that can occur with a 50-year return period and a probability of 2%, equivalent to 8.82 cubic meters per second, it is necessary to consider the area that is submerged in a flow of 90 cubic meters per second in the case of any equipment and construction operations along the course of this river. It was also found that 483,242 square meters of various land uses in Tabriz city are located in the floodplain of Mehran Roud, of which more than 23 percent of the total land uses are residential.
Article Type: Educational article |
Subject:
Environmental disasters
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