Analysis and calculation of sediment scouring rate at different locations of storm sewer

To explore the migration differences of sediments at the front, middle, and end sections of a storm sewer when scoured by water, and further evaluate the pollution load, the scouring process of sediments at different locations of a storm sewer was simulated and mathematical models were built to calc...

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Autores principales:	Cuiyun Liu, Wenke Lv, Qi Liu, Jie Zhou, Yiyang Wang, Xiaohua Zhang, Jun Zhou
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	calculation model scouring rate sediment storm sewer Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/053e31c762ef49c28e76c7a251cb5f51
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id	oai:doaj.org-article:053e31c762ef49c28e76c7a251cb5f51
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spelling	oai:doaj.org-article:053e31c762ef49c28e76c7a251cb5f512021-11-06T11:22:08ZAnalysis and calculation of sediment scouring rate at different locations of storm sewer0273-12231996-973210.2166/wst.2021.334https://doaj.org/article/053e31c762ef49c28e76c7a251cb5f512021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/6/1340https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732To explore the migration differences of sediments at the front, middle, and end sections of a storm sewer when scoured by water, and further evaluate the pollution load, the scouring process of sediments at different locations of a storm sewer was simulated and mathematical models were built to calculate the scouring rate. Results show that scouring rate is affected by sediment particle size, pipeline slope, sediment thickness, and water flow velocity. As the slope increased, scouring rate at the end section increased more obviously. The scouring rate at the front section slightly decreased with increasing sediment thickness, but opposite trends were observed at the middle and end sections. When the particle size (0.33 mm–0.83 mm) and flow velocity (0.15 m/s–0.65 m/s) increased within their ranges, scouring rate increased across all three locations. Models for calculating scouring rate were established via two data fitting. The calculated values were compared with measured values at a scouring time of 1 min. Under different particle sizes, the difference between the calculated and measured values at front, middle, and end sections were in the ranges of −0.63% to 0.63%, −0.01% to 0.02%, and −0.13% to 0.16%, respectively, all of which showed good consistency. HIGHLIGHTS The increase of scouring rate at end section is more obvious as slope increases.; Scouring rate of all the three locations increases with flow velocity increasing.; Scouring rate is great when particle size is big (d50 = 0.33–0.83 mm).; Scouring rate at different locations in a storm sewer is calculated using models.; Difference between the calculated and measured values is from −0.63% to 0.63%.;Cuiyun LiuWenke LvQi LiuJie ZhouYiyang WangXiaohua ZhangJun ZhouIWA Publishingarticlecalculation modelscouring ratesedimentstorm sewerEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 6, Pp 1340-1353 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	calculation model scouring rate sediment storm sewer Environmental technology. Sanitary engineering TD1-1066
spellingShingle	calculation model scouring rate sediment storm sewer Environmental technology. Sanitary engineering TD1-1066 Cuiyun Liu Wenke Lv Qi Liu Jie Zhou Yiyang Wang Xiaohua Zhang Jun Zhou Analysis and calculation of sediment scouring rate at different locations of storm sewer
description	To explore the migration differences of sediments at the front, middle, and end sections of a storm sewer when scoured by water, and further evaluate the pollution load, the scouring process of sediments at different locations of a storm sewer was simulated and mathematical models were built to calculate the scouring rate. Results show that scouring rate is affected by sediment particle size, pipeline slope, sediment thickness, and water flow velocity. As the slope increased, scouring rate at the end section increased more obviously. The scouring rate at the front section slightly decreased with increasing sediment thickness, but opposite trends were observed at the middle and end sections. When the particle size (0.33 mm–0.83 mm) and flow velocity (0.15 m/s–0.65 m/s) increased within their ranges, scouring rate increased across all three locations. Models for calculating scouring rate were established via two data fitting. The calculated values were compared with measured values at a scouring time of 1 min. Under different particle sizes, the difference between the calculated and measured values at front, middle, and end sections were in the ranges of −0.63% to 0.63%, −0.01% to 0.02%, and −0.13% to 0.16%, respectively, all of which showed good consistency. HIGHLIGHTS The increase of scouring rate at end section is more obvious as slope increases.; Scouring rate of all the three locations increases with flow velocity increasing.; Scouring rate is great when particle size is big (d50 = 0.33–0.83 mm).; Scouring rate at different locations in a storm sewer is calculated using models.; Difference between the calculated and measured values is from −0.63% to 0.63%.;
format	article
author	Cuiyun Liu Wenke Lv Qi Liu Jie Zhou Yiyang Wang Xiaohua Zhang Jun Zhou
author_facet	Cuiyun Liu Wenke Lv Qi Liu Jie Zhou Yiyang Wang Xiaohua Zhang Jun Zhou
author_sort	Cuiyun Liu
title	Analysis and calculation of sediment scouring rate at different locations of storm sewer
title_short	Analysis and calculation of sediment scouring rate at different locations of storm sewer
title_full	Analysis and calculation of sediment scouring rate at different locations of storm sewer
title_fullStr	Analysis and calculation of sediment scouring rate at different locations of storm sewer
title_full_unstemmed	Analysis and calculation of sediment scouring rate at different locations of storm sewer
title_sort	analysis and calculation of sediment scouring rate at different locations of storm sewer
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/053e31c762ef49c28e76c7a251cb5f51
work_keys_str_mv	AT cuiyunliu analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT wenkelv analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT qiliu analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT jiezhou analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT yiyangwang analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT xiaohuazhang analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer AT junzhou analysisandcalculationofsedimentscouringrateatdifferentlocationsofstormsewer
_version_	1718443650754543616

Analysis and calculation of sediment scouring rate at different locations of storm sewer

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