Pressurized Mine Refuge Chamber for Contaminated Air Isolation
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Solution Overview
Problem
Underground mine ventilation systems can fail during emergencies, posing risks to miners due to inadequate air quality, blockages, and disorientation, leading to potential injury or death if they cannot quickly exit the mine.
Innovation Solution
A mine refuge chamber designed for occupancy, equipped with an oxygen supply, breathable air system, carbon dioxide reduction, and explosion-proof features, which can be sealed and positively pressurized to maintain a safe environment, allowing miners to wait for rescue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If miners rely on evacuation during ventilation failure, then miners can escape if conditions permit, but miners are placed in peril if exit routes are blocked or miners are unable to escape quickly
Solution Approach 1:
The refuge chamber is prepared in advance with oxygen supplies, breathable air systems, and life support equipment before emergencies occur. Miners can quickly enter the pre-prepared chamber during ventilation failures, eliminating the need to evacuate through potentially blocked or hazardous exit routes.
Solution Approach 2:
The refuge chamber serves as an intermediary safe zone between the hazardous mine environment and the outside world. It provides a transition space with controlled atmospheric conditions, allowing miners to survive ventilation failures without direct exposure to contaminated mine air or the risks of forced evacuation.
2Object-affected harmful factors
If the chamber is sealed to protect miners from contaminated air, then breathable air quality is maintained, but the chamber must be positively pressurized requiring additional air supply
Solution Approach 1:
The breathable air supply system incorporates flow meters and pressure monitoring that provide feedback on chamber conditions. The system automatically adjusts air supply rates to maintain positive pressure while accounting for the number of occupants and their breathing rates, optimizing the balance between safety and resource consumption.
Solution Approach 2:
The air supply system is dynamically adjustable based on changing conditions such as the number of miners in the chamber, their metabolic rates, and pressure differentials. Flow control mechanisms allow the system to adapt air delivery in real-time, providing sufficient air for both maintaining positive pressure and supporting occupant respiration.
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 mine refuge provides a safe and breathable environment for miners, enabling them to wait out emergencies by maintaining a stable air supply and reducing carbon dioxide levels, thus reducing the risk of injury or death.
Implementation Method 1
A breathable air supply is installed in the chamber for supplying a steady flow of breathable air and for positively pressurizing the chamber to inhibit entry of contaminated mine air into the chamber
Data Source
AI summary
A mine refuge for use in a mine includes a chamber sized and shaped for occupancy by at least one miner and adapted to be substantially sealed. An oxygen supply is installed in the chamber for supplying oxygen to the chamber. A breathable air supply is installed in the chamber for supplying a steady flow of breathable air and for positively pressurizing the chamber to inhibit entry of contaminated mine air into the chamber.