Watertight Stormwater Basin Modules Without Geomembrane Wrapping
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Solution Overview
Problem
Existing underground stormwater retention systems require cumbersome wrapping of geomembranes around modules for watertightness and lack the ability to retain water for prolonged periods without perforations, while also being limited by installation depth and space requirements.
Innovation Solution
A module system comprising three-dimensional units with male and female through holes and flanges for watertight connections, allowing for assembly without geomembranes, enabling retention and detention of stormwater for extended periods, and allowing for closer installation to ground level and reduced space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If perforations are provided in modules for stormwater drainage, then water can pass through the modules, but the modules cannot retain water for prolonged periods
Solution Approach 1:
The system is divided into separate functional modules: some modules have perforations for drainage while others are solid for retention. These modules are assembled together to create a hybrid system that achieves both drainage and prolonged retention capabilities, resolving the contradiction between immediate drainage and long-term retention.
2Reliability
If geomembranes are wrapped around modules to make them watertight, then water retention capability is improved, but the system becomes more complex and installation becomes cumbersome
Solution Approach 1:
The geomembrane wrapping step is completely removed from the system. Instead of requiring external membranes to achieve watertightness, the modules themselves are designed with integrated watertight connection mechanisms (flanges and seals) that provide reliable water retention without additional encapsulation layers.
Solution Approach 2:
The modules are designed to be self-watertight through their own structural features (flanges, gaskets, and connection mechanisms) rather than requiring external geomembranes. Each module independently provides its own watertight sealing capability, eliminating the need for complex wrapping procedures.
3Duration of action of moving object
If solid modules without perforations are used for water retention, then water can be retained for longer periods, but the modules cannot provide stormwater drainage
Solution Approach 1:
The system divides drainage and retention functions into separate module types. Perforated modules handle stormwater drainage while solid modules provide prolonged retention. By segmenting functions across different modules and assembling them together, the system achieves both drainage productivity and retention duration without compromise.
4Quantity of substance
If modules are installed deeper underground to increase retention capacity, then more water can be retained, but installation becomes more difficult and space requirements increase
Solution Approach 1:
The system uses lightweight modular units that can be easily maneuvered and assembled at various depths. The modular design with standardized connection mechanisms allows flexible installation configurations, enabling the system to achieve required retention capacities without necessarily requiring deep burial, thus maintaining installation ease while providing adequate water storage volume.
Data Source
AI summary
A module system for use as an underground stormwater retention basin, where the module system parts consist of a plurality of watertight three-dimensional units such as cuboids. Each of the watertight three-dimensional units has one or more through holes selected from a female through hole and a male through hole. A female through hole is for insertion of a flange of a male through hole. A male through hole has a flange for insertion into a female through hole. The disclosure further discloses various additional parts for the module system of the underground stormwater retention basin, to methods of building an underground stormwater retention basin and to a use of an underground stormwater retention basin.