Optimizing perforations in buried high density polyethylene pipes for drainage applications.
Authors: Gaj, N., C. A. Madramootoo
Description: Buried pipes have long been used to control groundwater movement and they have numerous applications in agricultural land drainage, storm water and sewage systems, leachate collection, stability of embankments, and general dewatering. Since the mid twentieth century, high density polyethylene (HDPE) has been one of the main types of thermoplastic used for buried pipes. The performance of such pipes has since been widely tested under various loading and hydraulic conditions, and research has shown that the opening-size, shape and general location of perforations are key factors to be considered. However, a knowledge gap currently exists in the design guidelines for perforating buried pipes. Specifically, there are no guidelines for optimizing the number of perforations needed for the best hydraulic response to groundwater flow while maintaining the structural integrity of buried pipes. This research intends to fill this gap by amalgamating the hydraulic and structural design criteria of buried pipes through simulation and modelling. A computation model will be developed to simulate the hydrodynamics of groundwater flow. This will be coupled with a geotechnical module to simulate earth pressures from buried conditions. Experiments will be done with a sand-tank model to calibrate and validate the computational model, after which simulations will be carried out with the aim of developing new guidelines for optimizing perforations in buried pipes.
Keywords: Dewatering, Groundwater, Hydraulic Performance, Modelling, Perforation.
Technical field: Building Systems Engineering
Conference name: CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Session name: Water Management II - Structures and Modelling
Citation: Gaj, N., C. A. Madramootoo. 2015. Optimizing perforations in buried high density polyethylene pipes for drainage applications.. CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering