Curved Telescopic Mine Rib Support for Horizontal Load Resistance
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Solution Overview
Problem
Current mine rib support methods, such as timber posts and resin anchor bolts, are inadequate due to ease of dislodgment under horizontal load and require specialized equipment for installation, and existing solutions like jacking mechanisms reduce horizontal resistance and increase instability.
Innovation Solution
A curved and continuous telescopically expandable support member is used, with transverse end plates that engage the mine floor and roof, providing prestressed compression to the mine rib, and laterally extended rib engagement plates for enhanced stability and resistance without the need for special tools or equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If timber posts are used for rib support, then installation is simple, but the posts dislodge easily under horizontal load
Solution Approach 1:
The support member is formed with a curved configuration that protrudes toward the mine rib, creating a geometric interlock that resists dislodgment under horizontal load while maintaining simple installation procedures
Solution Approach 2:
The support system divides functions between the curved support member for structural resistance and the transverse end plates with hinged portions for anchoring, allowing each component to optimize its specific function
2Reliability
If resin anchor bolts are installed in the rib, then anchoring strength is improved, but specialized drilling equipment is required
Solution Approach 1:
The transverse end plates with outwardly hinged plate portions automatically engage and anchor into the mine floor and roof surfaces through their own structural design, eliminating the need for external drilling or special installation equipment
Solution Approach 2:
The curved configuration of the support member works in conjunction with the hinged end plates to create self-anchoring capability through geometric interlocking with the mine surfaces
3Force
If jacking mechanisms are included in the support device, then support force is increased, but horizontal resistance decreases and cost increases
Solution Approach 1:
The curved configuration of the continuous support member inherently provides both vertical support force and horizontal resistance through its geometry, eliminating the need for separate jacking mechanisms and maintaining structural integrity
Solution Approach 2:
The support function and anchoring function are merged into a single integrated curved support member with hinged end plates, providing both vertical and horizontal resistance without requiring separate jacking components
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 solution provides a lightweight, flexible, and effective rib support that increases horizontal resistance and stability, eliminating the need for expensive jacking mechanisms and specialized tools, while allowing for easy installation and adjustment to accommodate varying mine conditions.
Implementation Method 1
The support member is telescopically expanded to engage the mine floor and the mine roof under compression adjacent the mine rib
Implementation Method 2
the hinged plates are biased for gouging into the mine floor and the mine roof surfaces when the support member is placed under prestress
Implementation Method 3
The preset curvature of the continuous support member may be provided, at least in part, by a hinged bent knee positioned intermediate the opposite ends of the support member
Data Source
AI summary
A mine rib support for bracing a vertical mine rib disposed between a mine floor and a mine roof. The support includes an elongated upright and continuous telescopically expandable support having a preset curvature. The member is longitudinally expanded for engaging the mine floor and the mine roof under compression with the curvature facing towards the mine rib. A support plate is laterally extended from the support member into compression engagement with the mine rib, thereby prestressing the support for support of the mine rib.