An inflatable bladder seals mine tunnels using pneumatic pressure to expand against walls.
Hydraulic slurry transport fills mine voids while preventing toxic dust generation from exposed tailings.
Determines support strength and residual burst energy absorption via rock-support equilibrium curves to resolve inaccurate destruction stage analysis.
A flow diverting conduit string integrates leaching, production, and dewatering functions within a single concentric assembly.
An intelligent experimental device coordinates pressure and temperature control mechanisms to simulate realistic mining conditions.
Liquid natural gas pre-cools natural gas before compression, increasing density and mass flow rates while reducing outlet temperature.
Integrated hydrate device captures CO2 using phase transitions and automated control loops.
A proximity detection system defines dynamic virtual zones around equipment based on personnel velocity and travel direction.
A prime mover bucket attachment uses distinct hydraulic actuators to pivot each end independently.
Calculating critical softening depth and stress indices determines drillhole parameters to prevent rock bursts while maintaining roadway stability.
A protecting trolley integrates infrared and laser sensors to monitor surrounding rock conditions during tunnel excavation.
An inflatable tunnel seal expands from a folded state to fill large mine drifts using segmented body panels and weighted pads for rapid deployment.
Pre-cast boxes protect embedded optical fiber grating sensors from damage, enabling reliable long-term monitoring of shield segment deformation.
Multi-source heterogeneous data collection calculates tunnel performance and resilience indicators for structural health assessment.
Multi-information coupling prediction integrates gas pressure, stress, and desorption data to assess coal outburst risks.
Hydrophilic polymer particles absorb water to form a gel that blocks oxygen and sustains cooling in coal pillars, eliminating continuous reapplication.
A mine stopping jack uses a toggle press to extend posts and secure panels efficiently.
Simultaneous brine injection creates a pressure barrier that prevents upward carbon dioxide migration through caprock layers.
Radar detects sump depth via roof bolt reflections, preventing excessive cutter motor load in dusty mining environments.
Cavity-filling carbide weldments on steel skid shoes resist abrasive roadbed action and impact forces to extend blade service life.
Nested telescopic upright members collapse to compact dimensions for transport through narrow underground tunnels.
RFID tags allow mobile scanners to correct drift errors in GPS-denied environments, ensuring accurate alignment.
High elevation reservoirs reduce evaporative losses and flood risks by redirecting water through gravity-assisted conduits during peak demand.
Maintaining 1.0 to 4.0 psi per foot pressure creates a fundamentally impervious boundary, retaining over 95% of stored hydrogen.
An embedded fireproof plate with a groove-type connecting member prevents aging and detachment, ensuring long service life in undersea tunnels.
A composite drainage membrane retains water in sub-base voids while allowing lateral transport through spacer means.
Segmented hood with circumferential air pipes reflects compressional waves as expansion waves to delay tunnel pressure buildup.
Polyurea adhesive joins concrete blocks to resist explosive forces exceeding 400 psi, overcoming mortar weakness in moist mines.
Sequential slug injection creates nano-armored foam to plug channeling paths and expand storage range.
Segmented treatment chambers and removable roof panels prevent flooding while enabling straightforward maintenance access.
Payload autonomous carriers deliver consumables via smart containers, reducing manual labor and optimizing cage usage for ore transport.
A navigation apparatus determines rock drilling rig position using sensor data from previous rounds to generate real-time tunnel lines.
Graduated wall thickness concentrates material at high-wear zones, resolving the trade-off between extended service life and reduced bucket capacity.
Interlocking concrete blocks with shear lugs and grooves resist transverse loads up to 3600 pounds per foot in mine seals.
A control unit balances conveying and buffer capacities in underground mining operations by continuously monitoring actual extraction data.
A working machine manipulates a superstructure and arm to engage an implement with a holding device for secure transport.
A position indicating element attached to a loader bucket extends parallel to the bottom plate to provide visual alignment cues for the operator.
A blast reconciliation model uses laser scanning data to determine material yield accurately.
Composite sealing aggregates block overburden zones while cement slurry seals subsidence areas, preventing mine water inrush.
A monitoring system determines separation layer development status using surface subsidence, rock stress, and water pressure variation data.
Dual photoacoustic cavities measure total and respirable dust simultaneously to calculate free SiO2 content, solving offline detection delays.
Steel dowels anchor metal mats in concrete to resist 50 psi explosions, solving low pressure limits.
A mobile machine RFID system uses a reference transponder to calibrate signal field strength.
Crawler-type trolley integrates drilling and cutting apparatuses to maintain rock integrity while reducing dust pollution.
A metering module regulates separated gas flow to a detection unit.
Capsule pressure sensors measure stress in coal and rock masses through high-pressure oil pipes.
Segmented grouting method uses varying slurry specific gravity to seal mining aquifer cracks.
Regulating reservoir wettability via contact angle adjustments improves carbon dioxide sequestration capacity while reducing leakage risks.
An articulated liner system uses a single polymer mat with pivoting anchorage assemblies to protect mining equipment surfaces.