Deformation of gas vent pipes at land-fill sites using high density polyethylene pipes 2

Abstract

In waste disposal sites, gas vent pipes are installed to release generated gas from underground and introduce new air for the purpose of stabilizing landfills. When investigating the blockage of gas vent pipes at actual land-fill sites, the pipes were found to be deformed in a manner that caused them to buckle, and it is unclear what loading conditions cause the deformation conditions at the site. Therefore, in order to explore the factors that cause the buckling of gas vent pipes, indoor compression tests were conducted using high-density polyethylene pipes used at actual land-fill sites. In this paper, we summarize the test results for each high-density polyethylene pipe material and report on their deformation characteristics and deformation conditions.