Evaluation of defective sewer pipe–induced internal erosion and associated ground deformation using laboratory model test

Indiketiya, Samanthi; Piratheepan, J.; Rajeev, Pathmanathan

doi:10.1139/cgj-2016-0558

Cited by 59 publications

(15 citation statements)

References 34 publications

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“…Furthermore, an empirical study established that many cases of ground subsidence are caused by groundwater due to defective sewer pipe leakage. A survey conducted in Seoul, South Korea, demonstrated that the leading causes of underground soil erosion are defective sewer and water pipes and excavation activities (Indiketiya, Jegatheesan & Rajeev, 2017). However, a more significant percentage of this underground subsidence in Seoul is caused by defective sewer pipes than excavation works, representing 85% and 14%, respectively (Jo, Cho % Jang, 2016).…”

Section: Problem Statementmentioning

confidence: 99%

Investigating Soil Erosion Due to Defective Sewer

Sakib¹

2021

Preprint

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Cases of road cave-ins have been reportedly increasing globally and reports have associated this phenomenon to underground soil erosion due to defective sewer pipes. As the sewer pipes age, they may develop some defects which may lead to cracks and crevices that will lead to infiltration of the soils surrounding the pipe into the pipe, leading to the formation of cavities around the pipe. Therefore, this study investigated the factors behind the causes of underground soil erosion due to defective sewer pipes and proffered solutions for combating underground soil erosion due to defective sewer pipes. The study objective included; (a) establishing how the soil particle sizes affect the internal soil erosion due to defective sewer pipes, (b) determination of the effect of defect sizes on the internal soil erosion due to defective sewer pipes, (c) establishing the effect of the embedment material used on the internal soil erosion due to defective sewer pipes, (d) investigation of the type of soil erosion mechanism in the presence of a buried sewer pipe defect caused by the groundwater infiltration process. The methodology of the study involved reviewing and analyzing secondary qualitative and quantitative data. The findings established that the defect size of the pipe, the type and characteristics of the soil and the type of embedment materials used affected erosion of soil around a defective sewer pipe.

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Section: Problem Statementmentioning

confidence: 99%

Investigating Soil Erosion Due to Defective Sewer

Sakib¹

2021

Preprint

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“…The vast majority of prior studies that have experimentally assessed the ground subsidence and sinkhole due to sewer pipe damage have been conducted on poorly-graded non-cohesive soils (Guo et al, 2013;Indiketiya et al, 2017;Kuwano et al, 2010aKuwano et al, , 2010bSato and Kuwano, 2015;Tang et al, 2017). However, in several countries, the sewage reclamation specifications allow the landfill soil to contain 15-25 % of fine contents.…”

Section: Model Groundmentioning

confidence: 99%

“…In geotechnical engineering, digital imaging techniques are primarily used to measure the deformation of target samples (Alshibli and Sture, 1999;Indiketiya et al, 2017;Kim et al, 2017;Kwak et al, 2019;White et al, 2003). In the present study, the displacement at each position of the model ground was measured by applying the PIV algorithm (Adrian, 1991), which is the most widely used technique in the field of geotechnical engineering.…”

Section: Digital Image Analysismentioning

confidence: 99%

Experimental assessment of the relationship between rainfall intensity and sinkholes caused by damaged sewer pipes

Kwak¹,

Woo²,

Chung³

et al. 2020

Preprint

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Abstract. In several countries, the rising occurrence of sinkholes has led to severe social and economic damage. Based on the mechanism of sinkhole development, researchers have investigated the correlation between rainfall intensity and sinkholes caused by damaged sewer pipes. In this study, the effect of rainfall intensity on the formation of eroded zones, as well as the occurrence of sinkholes caused by soil erosion due to groundwater infiltration through pipe defects, has been analyzed through model tests. The ground in Seoul was adopted using weathered granite soil, which is generally used for backfill sewer pipes, and groundwater levels corresponding to three different rainfall intensity conditions were considered. The ground level changes and ground displacements were measured continuously, and the particle image velocimetry (PIV) algorithm was applied to measure the displacement at each position of the model ground. The results indicate that impeding the excessive rise of groundwater levels by securing sufficient sewage treatment facilities can effectively prevent the development of sinkholes caused by pipe defects.

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“…Pipe joints can exhibit different kinematic behaviours, i.e., joint rotation and axial translation, to accommodate PGD (Saiyar et al 2015). However, once the joint rotation and axial translation exceed the joint service limits, the sealing performance deteriorates and joint leaking occurs, which further leads to enormous loss of water resource (Sadeghioon et al 2014), and form erosion voids near pipes, threatening the stability of the ground and infrastructures (Indiketiya et al 2017;Tang et al 2017;Peter et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Joint kinematics and sealing capacity assessment of ductile iron pipes under abrupt transverse ground movements

Qin

Wang

2022

Can. Geotech. J.

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Joint kinematic behaviour, i.e., joint rotation and axial translation, can partially help pipelines to accommodate abrupt ground movements, and cause leaking if joint service limit is exceeded, even without any structural failure. Kinematic behaviour of bell-spigot jointed ductile iron (DI) pipes and its influence on joint sealing capacity under abrupt transverse ground movements are investigated in this study. Firstly, a beam-on-spring finite element analysis on joint kinematics of DI pipes is conducted, in which different fault-pipe crossing positions are implemented. Based on simulated results, a modified joint kinematic solution incorporating pipe deflection and joint shear force under different fault-pipe crossing positions is proposed. Then, a Monte Carlo simulation (MCS)-based reliability assessment procedure for joint sealing capacity is developed. Sensitivity analysis is subsequently conducted to investigate the effects of uncertainties associated with initial axial translation, soil properties, and crossing positions on the joint sealing capacity, and the effects of different deterministic solutions are compared. The proposed method allows engineers to effectively evaluate how the joint sealing capacity of DI pipes changes with consideration of uncertainties when abrupt transverse ground movements are encountered.

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Evaluation of defective sewer pipe–induced internal erosion and associated ground deformation using laboratory model test

Cited by 59 publications

References 34 publications

Investigating Soil Erosion Due to Defective Sewer

Investigating Soil Erosion Due to Defective Sewer

Experimental assessment of the relationship between rainfall intensity and sinkholes caused by damaged sewer pipes

Joint kinematics and sealing capacity assessment of ductile iron pipes under abrupt transverse ground movements

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