Assessment of optimum volume of sand mining in an urban river system

The illegal river sand mining activity has taken place in a sand-bed river system in Selangor, Malaysia for decades before legalization was initiated in 2008. The present study focuses on the determination of optimum sand extraction by considering sand during the critical period (dry season). The...

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Main Author:	Mahmud, Nur Hidayah Huqmah
Format:	Thesis
Language:	English
Published:	2018
Subjects:	Sand and gravel mines and mining Mines and mineral resources - Environmental aspects
Online Access:	http://psasir.upm.edu.my/id/eprint/84396/1/FPAS%202019%2012%20-%20ir.pdf
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id	my-upm-ir.84396
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spelling	my-upm-ir.843962022-01-04T00:44:35Z Assessment of optimum volume of sand mining in an urban river system 2018-01 Mahmud, Nur Hidayah Huqmah The illegal river sand mining activity has taken place in a sand-bed river system in Selangor, Malaysia for decades before legalization was initiated in 2008. The present study focuses on the determination of optimum sand extraction by considering sand during the critical period (dry season). The sand replenishment rate was used as the benchmark in determining the threshold level of the extractable rate in Langat River system, with a specific focus in relating the temporal variation and extraction frequency as the dominant influencing factors. This analysis was executed using Yang equation to predict the sediment replenishment rate. The equation suitability was developed with 43% of similarity by using the discrepancy ratio (ratio of calculated values to measured values) of sediment transport. The sample of sand from different critical locations, flow data, and other physical river parameters were used. Concentrating on sand replenishment rate during the critical period, the optimal sand mining is calculated by reducing 10% from total replenishment rate, which is then converted into Truck Loads per month (taking standard 25 tons truckload). The comparison of sand replenishment rate in high and low flow season proved that the river system has quicker capabilities in sand replenishment rate at the extraction point during the wet season compared to the latter by 83%. Therefore, the quantifiable volume of the extractable sand rate at each extraction points is proposed specifically during dry months (May to September) whereby the slower replenishment rate is critical and riskier. Sand and gravel mines and mining Mines and mineral resources - Environmental aspects 2018-01 Thesis http://psasir.upm.edu.my/id/eprint/84396/ http://psasir.upm.edu.my/id/eprint/84396/1/FPAS%202019%2012%20-%20ir.pdf text en public masters Universiti Putra Malaysia Sand and gravel mines and mining Mines and mineral resources - Environmental aspects Jamil, Nor Rohaizah
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Jamil, Nor Rohaizah
topic	Sand and gravel mines and mining Mines and mineral resources - Environmental aspects
spellingShingle	Sand and gravel mines and mining Mines and mineral resources - Environmental aspects Mahmud, Nur Hidayah Huqmah Assessment of optimum volume of sand mining in an urban river system
description	The illegal river sand mining activity has taken place in a sand-bed river system in Selangor, Malaysia for decades before legalization was initiated in 2008. The present study focuses on the determination of optimum sand extraction by considering sand during the critical period (dry season). The sand replenishment rate was used as the benchmark in determining the threshold level of the extractable rate in Langat River system, with a specific focus in relating the temporal variation and extraction frequency as the dominant influencing factors. This analysis was executed using Yang equation to predict the sediment replenishment rate. The equation suitability was developed with 43% of similarity by using the discrepancy ratio (ratio of calculated values to measured values) of sediment transport. The sample of sand from different critical locations, flow data, and other physical river parameters were used. Concentrating on sand replenishment rate during the critical period, the optimal sand mining is calculated by reducing 10% from total replenishment rate, which is then converted into Truck Loads per month (taking standard 25 tons truckload). The comparison of sand replenishment rate in high and low flow season proved that the river system has quicker capabilities in sand replenishment rate at the extraction point during the wet season compared to the latter by 83%. Therefore, the quantifiable volume of the extractable sand rate at each extraction points is proposed specifically during dry months (May to September) whereby the slower replenishment rate is critical and riskier.
format	Thesis
qualification_level	Master's degree
author	Mahmud, Nur Hidayah Huqmah
author_facet	Mahmud, Nur Hidayah Huqmah
author_sort	Mahmud, Nur Hidayah Huqmah
title	Assessment of optimum volume of sand mining in an urban river system
title_short	Assessment of optimum volume of sand mining in an urban river system
title_full	Assessment of optimum volume of sand mining in an urban river system
title_fullStr	Assessment of optimum volume of sand mining in an urban river system
title_full_unstemmed	Assessment of optimum volume of sand mining in an urban river system
title_sort	assessment of optimum volume of sand mining in an urban river system
granting_institution	Universiti Putra Malaysia
publishDate	2018
url	http://psasir.upm.edu.my/id/eprint/84396/1/FPAS%202019%2012%20-%20ir.pdf
_version_	1747813468396847104

Assessment of optimum volume of sand mining in an urban river system

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