Underground Chambers TRIZ Cases

A self-moving tunnel support canopy advances using a telescopic beam and alternating longitudinal beams to maintain continuous arch coverage.

Segmented semi-pipe channels with strategic attachment means resolve flushing agent circumvention issues, enabling effective blockage removal via GPR scanning.

A tubular sleeve prevents water infiltration by expanding to fill annular spaces caused by cured-in-place liner shrinkage.

A retractable mobile element articulates on a rod to lift heavy construction structures.

A semi-reverse construction method segments station floors to expedite shield tunneling machine passage.

Pretensioning unidirectional composite yarn around fixed pins creates a corrosion-resistant cage that eliminates metal demolition costs.

Segmented transition sections accommodate irregular tunnel geometries while the composite core withstands 540°C temperatures.

Segmenting the liner allows inversion through one access point while maintaining lateral line flow to prevent solid buildup.

Carbon fiber nets replace steel in shotcrete layers to eliminate corrosion and extend service life.

Polyurea-coated foam glass elements merge fire, water, and frost protection into one component, reducing assembly complexity for varying tunnel profiles.

Curved tessellated modules distribute soil swelling pressures evenly, reducing wall thickness and rebar requirements while increasing void space.

A reusable inversion sleeve assembly enables air-based liner inversion and steam curing through a dual gland apparatus.

A rock burst active prevention mechanism using NPR reinforcing mesh and steel fibre concrete to absorb released energy.

Adhering material secures rolled grid material for transport, eliminating specialized dispensing devices and enabling manual installation in mining tunnels.

Rounded profile base corners distribute stress to prevent spalling in concrete tubbing during installation.

Segmented silo design allows transfer between use and filling positions, eliminating manual lifting requirements.

An anchor rail with a flush end plate and embedded anchoring element supports direct concrete edge mounting.

Automated gear shifting based on track speed differences in drilling rig propulsion systems.

Variable section bases adapt to irregular tunnel surfaces, enabling stable load transmission without complex structural redesign.

A movable feed apparatus transfers cement from a lower receptacle to a silo via an enclosed transfer tube.

Pre-formed grooves and steel bands secure flexible hoses against soil movements, preventing leakage in sewage pipe joints.

A mesh installation apparatus compares planned and actual rock surface models to detect discrepancies.

Parallel injection conduit in multi-layer barrier fills open-matrix layer, eliminating perpendicularly extending tubes and reducing installation effort.

A flexible tubular lining material uses removable elastic and rigid strip members to facilitate smooth insertion into confined pipeline sections.

Telescopic hydraulic legs adjust the formwork height to pass through reduced tunnel sections without disassembly.

A two-component resin kit fills structural recesses while minimizing shrinkage through expansive additives, ensuring long-term corrosion protection.

Swelling grout compensates for shrinkage and creep in hydroelectric tunnel segments, maintaining structural integrity under pressure.

Spring elements in the chassis arrangement compensate for uneven subsurface, preventing torsional forces from distorting segment geometry.

Collapsible composite liners expand inside host pipes to restore pressure ratings, eliminating costly excavation and reducing installation time.

Foam glass panels coated with polyurea eliminate voids that cause water accumulation and ice formation in tunnels.

A silica-containing surface layer reacts with cement to form a strong bond, preventing water leakage from gaps and adhesion failures in tunnel construction.

Conveying rails move arch segments within the trailer to separate operator routes from transport paths.

A tubular liner distributes grout using a swab and back-pressure device to eliminate air entrainment defects.

Dynamic parameter adjustment and synchronous grouting constrain settlement of sewage pipes and floating of existing tunnels in water-rich sand strata.

Segmented telescoping base sections enable unimpeded movement below the archway while maintaining secure structural support during construction.

Complementary alignment body prevents deformations and unsealed connections during pipe lining positioning.

A detachable concrete pressure gauge fits into the formwork socket to monitor pouring loads without structural modifications.

Curved tessellated modules and V-shaped legs reduce rebar needs while maintaining structural strength against soil pressure.

LIDAR scanning detects existing mesh positions to automate precise overlap installation, resolving manual positioning errors and enhancing rock fall safety.

Tilting segment formwork directs air bubbles to an opening before concrete solidifies, preventing surface craters and manual smoothing.

High light transmittance allows precise gasket alignment, resolving visibility issues in traditional opaque self-adhesive membranes.

An adjustable tunnel transport wagon resolves space constraints by varying support frame height and track spacing, allowing devices to nest inside each other.

A steel wire mesh uses third wires spaced 2 to 20 mm from primary wires to reinforce intersections while maintaining ductility for mechanical shaping.

A telescopic arm device manages protective net rolls using a pressure roller and clamping jaws to eliminate manual handling hazards.

Dual gland apparatus inverts cured-in-place liners with air and cures them using steam through a perforated hose, eliminating water inversion forces.

Mixing salt-lean fluid with carbon dioxide prevents brine evaporation and salt precipitation, maintaining aquifer permeability.

Integrated boom sensors map surface geometry to eliminate expensive scanners and improve concrete application accuracy.

A visualization grouting simulation device tracks slurry diffusion paths in coal rock fissures using fluorescent markers and UV lighting.

An inert gas blanket prevents hydrocarbon contamination while controlled leaching creates a structurally stable dome.

A fiber-cement panel bonded with a polyurethane adhesive and glass fiber mesh.