Tunnels TRIZ Cases

Projected 2D light patterns on the rock face help drill rig operators place holes faster and more accurately in low-visibility mining conditions.

Automatic feedback control adjusts shield tail sealant flow to keep discharge uniform despite pump wear and changing tunnel boring speed.

Separate support parts with embedded conductors detect mining tool wear on tunnel boring cutting wheels without major retrofit changes.

Axial receptacles in sliding tubes keep calibrated load sensors in the force path, improving tool-load accuracy while simplifying cutter changes.

An eccentric-mass oscillating disc on a flexible shaft fractures hard rock with less pick replacement, lower stress, and no explosives.

A six-tier cutterhead layout combines disc, ripper, and toothed cutters to cut steel I-beam diaphragm walls with less jamming and wear.

A main and secondary cutterhead layout forms a stable arched crown and flat floor in one pass, enabling immediate vehicle access.

Guidetubes and beveled sheets keep tunnel walls on path during hammering, cutting divergence, construction time, and cost.

Rounded transverse cutter head contours can cause irregular tool wear; four sections with distinct pitch angles help distribute wear more uniformly.

Collapsible peripheral plates reduce the cutter-head diameter, letting the tunnel excavator reverse through narrowed and curved passages.

A prism-shaped bore layout gathers geological data before excavation, helping crews plan continuous tunnelling through changing ground.

This micro-tunnelling case uses a ground-contact annular seal to prevent fluid mixing, reduce lubricant use, and stabilize pressure.

A mobile carriage uses hydraulic extension and driven movement to place tunnel-wall rebar while reducing scaffolding repositioning.

Independent TBM cutterhead assemblies form an arched crown and flat invert, enabling immediate standard-vehicle access.

A wheeled rebar carriage uses hydraulic extendable platforms to reach tunnel walls and reduce scaffolding repositioning.

A Tunnel Extraction Machine uses segmented cutting with hollow ring heads to extract large rock sections without crushing.

Hydroxy-functional silanes in the mortar mass form covalent bonds with mineral substrates, maintaining mechanical strength in wet holes.

Nested camera captures real-time images of crack evolution during hydraulic tunnel mold advancement, resolving manual excavation limitations.

Offset locking holes and post guides allow rapid height changes for underground mining drive stations without complex assembly.

A combined rock-breaking TBM cutter head uses a three-way force sensor to detect squeezing forces on the mechanical cutter tool.

A tunnel boring machine uses a single rear-mounted sensor to acquire cutting edge position data for disc cutter wear monitoring.

Independent rotation plate inside cutter head opening generates high linear speed at the center region.

A beam splitter divides a single laser into two paths for simultaneous position and angle detection in tunnel boring machine guidance systems.

Segmented tunnel boring machine separates annular cutting from core extraction to optimize excavation speed.

Segmented multi-cutterheads coupled by an intelligent robot arm resolve the contradiction between adaptability and structural complexity in tunnel excavation.