Inflatable Tunnel Seal Segmentation and Self-Righting
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Solution Overview
Problem
Existing tunnel sealing technologies fail to effectively seal large tunnels, such as mine drifts, due to lack of a reliable and efficient inflatable solution that can self-right and maintain position within the tunnel.
Innovation Solution
An inflatable tunnel seal comprising a body that can inflate from a folded position, equipped with multiple positioning straps, an inflow port, a pressure relief valve, and a hot stab receptacle, made of materials like polyurethane film, polyurethane-coated ballistic nylon, and Kevlar, which can be filled with air, water, or cement to seal tunnels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional tunnel sealing methods are used, then sealing capability is limited, but device complexity increases when attempting to seal large tunnels
Solution Approach 1:
The tunnel seal is divided into multiple segments that can be collapsed together for transport and then expanded to seal the tunnel. The seal includes a first end, a second end, and a body portion connecting them, with each segment capable of independent positioning and stabilization, allowing the system to scale to large tunnel volumes without proportionally increasing overall system complexity
Solution Approach 2:
The tunnel seal transitions from a collapsed state during transport to an expanded sealed state at the tunnel location. The dynamic expansion capability allows the seal to adapt to different tunnel sizes and shapes, providing large sealing capacity while maintaining relatively simple storage and deployment
2Productivity
If inflatable seal is used to seal large tunnels, then sealing efficiency improves, but reliability of positioning and self-righting decreases
Solution Approach 1:
Weighted pads are attached to the tunnel seal to provide counterbalancing force that enables self-righting if the seal becomes displaced or inverted. The weighted pads ensure the seal maintains proper orientation and position within the tunnel, enhancing positioning reliability while the seal remains inflated for efficient sealing
Solution Approach 2:
Multiple positioning straps are attached to the tunnel seal before deployment to facilitate proper positioning and stabilization. The positioning straps are prepared in advance to engage with tunnel features or anchoring points, ensuring reliable positioning is established before the sealing function is fully activated
3Ease of operation
If the tunnel seal is made inflatable for easy deployment, then ease of operation improves, but control over inflation pressure and fluid management becomes more difficult
Solution Approach 1:
An inflow port is provided to facilitate controlled introduction of inflation fluid into the tunnel seal. The inflow port acts as an intermediary interface between the inflation source and the seal body, enabling manageable control over the inflation process while maintaining ease of deployment through a standardized connection point
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 inflatable tunnel seal effectively fills and seals large tunnels, self-rights if displaced, and maintains position with weighted pads, allowing for efficient sealing and drainage of water or other fluids, suitable for various tunnel sizes and environments.
Implementation Method 1
an inner bladder and an outer cover... inflatable from a folded position to an inflated position
Implementation Method 2
a pressure relief valve fluidly connected to the inner bladder
Data Source
AI summary
A tunnel seal including a body, inflatable from a folded position to an inflated position, multiple positioning straps coupled to the body, an inflow port fluidly connected to the body, a pressure relief valve fluidly connected to the body, and a hot stab receptacle fluidly connected to the inflow port.