A MODEL EXPERIMENT AND THE CONSIDERATION ON GROUNDWATER FLOW PRESERVATION FOR THE AGREEMENT FORMATION

Abstract

To construct artificial structures such as a box culvert in sub-urban regions under which unconsolidated geological formations exist, it is important to understand the distribution of aquifers and movements of groundwater from the view point of environmental preservation. A study through a laboratory model experiment revealed that the obstruction to groundwater flow caused by laying box culvert could be minimized by (1) putting permeable material around the box, (2) controlling longitudinal flow velocity along box axis with seepage control walls, placed perpendicularly at some intervals. A further 2-dimensional seepage analyses and instrumentation monitoring in the laboratory was conducted. The study confirmed that the influence of sewer box construction on groundwater flow can be reduced. We describe about utility of a design based on the model experiment and analysis for such agreement formation.