Props/Chocks TRIZ Cases

A flattened helical strap reinforces the crib bag sidewall to raise load capacity, reduce rupture risk, and stabilize compressive loading.

Interconnected beams and connectors replace discontinuous crib support with a continuous structure while reducing wood use.

A telescoping mine roof support uses nested frusto-conical sections secured by a frictional fit to create a continuous load-bearing structure.

A flexible grid pillar structure suspended by rock bolts contains waste rock to provide mine roof support.

Threaded rods and jack planks in a mine crib apply vertical preload forces to secure the roof without wedge-induced imbalance.

A tapered fibreglass composite tube reduces initial load drop and maintains stability while lowering weight compared to steel props.

A mine prop with a yieldable insert yields before the pipes, allowing particulate matter to flow and maintaining load-bearing capacity during roof displacement.

A sliding tubular sleeve reinforces the inner tube of an acrow prop, increasing buckling resistance and reducing installation time.

Helically wrapped polyethylene reinforcing layer contains cementitious material within a flexible containment bag.

A telescopic mine roof support uses nested tubes filled with compressible material to adjust length and bear load immediately.

An aluminum liner with a composite shell reduces weight and eliminates machining while maintaining burst resistance.

A cylindrical drum support uses a resilient core member to compress axially under load while maintaining roof contact through radial expansion.

Hydraulic clamping hoops lift single props continuously, eliminating repeated device removal and improving stability under limited roadway height.

Helical reinforcing wires in a pumpable crib bag increase load-bearing capacity while allowing greater deformation for mine roof support.