Vertical Panel Bund System for Compact Waste Retention
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Solution Overview
Problem
Conventional landfill and containment dam structures require large footprints and extensive use of expensive, easily damaged impervious liner material for waste retention, which is inefficient and environmentally impactful.
Innovation Solution
A bund system comprising double rows of spaced, vertical panels retained by interconnecting rods or soil anchors with compacted backfill, and sealed with flexible polymer materials to form a compact and durable waste retention area, reducing the need for extensive liner coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional bund formations are used for waste retention, then waste containment is achieved, but the footprint area is large and extensive impervious liner material is required
Solution Approach 1:
The bund structure is segmented into modular precast concrete panels arranged in double rows, allowing the retaining structure to be constructed with vertical elements rather than extensive sloping earth bunds, thereby reducing footprint area and liner material requirements
Solution Approach 2:
The invention transitions from horizontal earth bund formations to vertical panel structures, utilizing the vertical dimension for waste retention. This dimensional change enables compact footprint while maintaining containment effectiveness, significantly reducing the area of impervious liner material needed
2Reliability
If extensive impervious liner material is used to cover sloping bund walls, then pollution prevention is achieved, but the cost increases and the liner is easily damaged
Solution Approach 1:
The invention uses flexible polymer sealing elements and membranes as thin film barriers at critical joints and connections of the vertical panel structure, providing reliable pollution prevention with minimal material usage and enhanced durability compared to extensive liner coverage on sloping surfaces
Solution Approach 2:
The bund system combines precast concrete panels with flexible polymer sealing materials to create a composite structure that leverages the strength and rigidity of concrete for structural stability while using flexible polymers for reliable sealing, achieving both pollution prevention and cost-effectiveness
Data Source
AI summary
A bund system for the retention of solid or liquid or pourable waste material; bunds of the bund system comprising retaining structures; the retaining structures including at least one vertical structural element relative a base; the base covering a portion of a ground surface; the bunds maintained in a selected position on the ground surface by interaction of the retaining elements with a mass of compacted material.Also disclosed is a method of forming a waste retention area by enclosing the waste retention area by bunds; the bunds comprising at least one substantially vertical retaining structure relative a base extending over a portion of a ground surface; the method including the steps of;positioning retaining structures on the ground surface to form an enclosed area; horizontal base panels of the retaining structures facing inwards to the enclosed area,welding overlap portions of sealing elements at adjacent vertical and horizontal joints between adjoining retaining structures,placing an impervious liner over the ground surface of the enclosed area,welding edges of the impervious liner to edges of sealing elements at inward edges of the horizontal base panels.