Flared Modular Drainage Conduits for Compact Subsoil Absorption
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Solution Overview
Problem
Conventional subsoil fluid absorption and drainage systems are limited in design configuration, lack flexibility and adaptability during installation, and require significant disruption of the ground environment, leading to increased costs and environmental impact.
Innovation Solution
A modular drainage system with arced or flared conduits that increase surface area without increasing the overall footprint, utilizing polymeric core materials and geotextile filtration fabrics to enhance fluid absorption and reduce installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional trenches or excavations filled with rock aggregate and perforated pipe are used, then fluid absorption function is provided, but the system requires significant ground disruption and has limited surface area for absorption
Solution Approach 1:
The drainage conduits are formed with arcuate cross-sections spanning 60-270 degrees, creating curved surfaces that maximize surface area within a compact footprint. The arced shape allows the conduit to interface with surrounding soil over a larger surface area compared to conventional linear trenches, thereby improving fluid absorption capacity without proportionally increasing ground disruption.
Solution Approach 2:
The invention transitions from conventional two-dimensional trench layouts to three-dimensional arcuate conduits that extend vertically and laterally within the ground excavation. By utilizing the vertical dimension and creating arced profiles, the system achieves increased absorption surface area without requiring proportional increases in horizontal excavation area.
2Area of moving object
If the drainage system is designed with increased surface area for fluid absorption, then absorption capacity improves, but the longitudinal or transverse length of the system increases
Solution Approach 1:
The arcuate cross-sections of the conduits, spanning 60-270 degrees, create efficient use of space by curving the drainage path rather than extending it linearly. This curvature allows the system to achieve increased surface area within a more compact longitudinal and transverse envelope compared to straight-line trench configurations.
Solution Approach 2:
Multiple conduits are arranged in series along the excavation, with each conduit nested within the overall system layout. The conduits can be positioned at different elevations and orientations, allowing the system to pack increased absorption surface area into a reduced overall footprint by utilizing vertical and lateral space efficiently.
3Reliability
If conventional rock aggregate systems are installed, then fluid drainage function is achieved, but installation requires specialized equipment and is time-consuming
Solution Approach 1:
The drainage system is divided into modular conduit sections that can be manufactured separately and assembled in the excavation. Each conduit module maintains the required arcuate geometry and filtration characteristics, allowing for simplified installation compared to pouring and compacting large volumes of rock aggregate. The segmented modules can be positioned and connected more easily while maintaining drainage reliability.
Solution Approach 2:
The conduits are constructed using composite structures combining polymeric materials with geotextile filtration fabrics. This composite construction provides both structural integrity for maintaining the arcuate shape and filtration functionality, replacing the need for rock aggregate while simplifying installation. The composite material approach allows the conduit to be installed as a complete functional unit rather than requiring separate placement of aggregate and piping.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The modular system effectively increases drainage capacity while minimizing environmental disruption and installation costs by providing a larger surface area for fluid absorption without expanding the system's longitudinal or transverse dimensions.
Implementation Method 1
The conduits may be wrapped with a geotextile filtration fabric that allows passage of fluid into the surrounding environment
Implementation Method 2
Fluid flows through the pipe and out the perforations. Fluid is held within cavities in the aggregate until it can be absorbed into the soil
Data Source
AI summary
A drainage unit has a plurality of modules defining channels with arced or flared surfaces longitudinally spaced from one another for installation into a ground excavation. The spaced modules may be aligned on a longitudinally support pipe that may provide a fluid connection between the channels. The adjacent surfaces of successive modules are spaced from each other a non-constant distance across the laterally transverse thickness or height. Filtration fabric that allows fluid flow therethrough while substantially filtering surrounding soil or other back fill is wrapped around each of modules. The flared and/or arced configuration of the modules defining channels allows for increased surface area interfacing between the channels and soil and a corresponding reduction in laterally transverse footprint.