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.

Retractable rotary cutters minimize mud adherence and power consumption.

Segmented display image shows xz and xy projections to resolve two-dimensional positioning complexity in rock caverns.

Segmenting the tool drive reduces hydraulic friction losses in long tunnels while maintaining compact transportability.

Telescopic tensioning mechanism enables automated cutter replacement, reducing manual labor and safety risks during tunnel construction.

A sealed screw conveyor discharges excavated material through a dedicated opening, preventing abrasive overburden from damaging the main transport system.

An ultrasonic emitter mounted on a tunnel boring machine discharge opening wall generates mechanical vibrations to reduce friction.

Ground machine interaction models classify sensor readings to adjust boring parameters, resolving expertise bottlenecks in non-homogeneous ground conditions.

Jet grouting creates a continuous tubular shell from primary and infill blocks to seal water passages in inhomogeneous ground.

Electric motors pull tunnel elements into soil via tension rods, eliminating noise and vibrations from conventional pressing methods.

Circumferential control units extrude an elastic inner ring to seal varying shield tunneling machine diameters, preventing water and slurry leakage.

A drill rig control system automatically selects drilling parameters based on hole type to optimize boom movement speed and positioning accuracy.

A tunneling machine buffer tank accumulates excavated particulate material between the front excavation mechanism and rear soil transporter.

A control unit dynamically updates a drilling rig's working area based on real-time orientation and hole parameters.

A movable shove frame structure advances using retractable thrust cylinders and gliding elements.

A tunnel excavation device uses a turnable vertical shoe to adjust the cutter head orientation.

Jet grouting tools improve fractured rock quality, enabling continuous TBM operation without stop-start delays.

Pull-in tunneling uses clamping elements and jacking cylinders to advance prefabricated segments through boreholes.

Segmented tool steel rings clamp between hub members, reducing weight and cost in tunnel boring machines.

Segmenting the excavation front with distributed pilot sensors to resolve temporal and spatial resolution limits in tunnel boring.

Integrated laser scanning apparatus detects tunnel profile deviations in real time, reducing overbreaking and underbreaking during excavation.

Integrating load-sensitive elements into a hollow sleeve structure enables precise detection of external cutting forces and directions on mining tools.

A rock drill display system projects planned and actual hole endpoints on a common reference plane to guide precise rod positioning.

Segmented housing protects sensors from harsh tunnel environments while ensuring reliable cutter rotation monitoring.

Triangular radar antenna arrays replace dust-prone laser systems to maintain accurate pose measurement in contaminated mining headings.

Nested vaults protect trains from rockfalls while easing manufacturing complexity.