A Large-Scale Model of Lateral Pressure on a Buried Pipeline in Medium Dense Sand

Hamzh Alarifi,Nor Faridah Nordin,Hisham Mohamad,Aminu Darda’U Rafindadi,Muhammad Yusoff,Budijanto Widjaja

doi:10.3390/app11125554

Hamzh Alarifi, Nor Faridah Nordin + Show 4 more

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https://doi.org/10.3390/app11125554

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Abstract

Modern countries utilise buried pipelines for the long-distance transportation of water, oil, and gas due to their efficiency and continuity of delivery to receiving locations. Due to soil movements such as landslides, excessive earth pressure imposed on buried pipelines causes damage and, consequently, leaking of liquids, gases or other harmful effluents into the soil, groundwater, and atmosphere. By using a large-scale physical model, the lateral pipeline–soil interaction in sandy soil was researched. This study investigated the stress distribution on a buried pipe induced by lateral soil displacement. The external forces on the buried pipe caused by the surrounding soil motion were measured using earth pressure cells installed in the active zone along the pipeline. Additionally, visual inspection of ground deformation patterns on the surface, including tensile cracks, above a shallow-buried pipeline subjected to lateral soil movement was reported. The results revealed that lateral soil movement has a potency effect on buried pipelines. The findings also indicated that the highest stresses occur at the unstable soil boundaries prior to reaching the soil’s peak strength. After observing the soil surface’s rupture, most of the stress increments were concentrated in the middle section of the pipe.

Highlights

Networks of pipeline transportation are crucial indicators of economic growth and development in many countries [1]
Earth pressure cell sensors were used to measure the stress along the buried High-Density Poly-Ethylene (HDPE) pipe, which was subjected to lateral ground movement in the large-scale physical model
This research simulated the lateral earth pressure on an High-Density Polyethylene (HDPE) buried pipe induced by a landslide

Summary

Introduction

Networks of pipeline transportation are crucial indicators of economic growth and development in many countries [1]. Modern countries utilise buried pipelines for the long-distance transportation of water, oil, gas, and other liquids due to their efficiency, convenience, and continuity of delivery to receiving sites [2]. Rapid urbanization in countries like China has led to reports of frequent damage to buried pipelines in the last three decades, attributable to construction activities which had resulted in lateral ground displacement [4]. Ground movement, such as slope instability, was confirmed to have been the cause of about

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