|
CN112281885A
|
|
Anti-seepage film joint self-bonding device and self-bonding type water cut curtain construction method thereof
|
|
CN112281879A
|
|
Anti-seepage film connecting device for water-intercepting curtain and water-intercepting curtain construction method
|
|
CN112267828A
|
|
Coal bed horizontal well hydrodynamic jet flow reaming coal drawing and bag support roadway forming pressure relief method
|
|
CN112255687A
|
|
Seismic source function reconstruction method and device of seismic shearer during mining of stope face
|
|
CN112099000A
|
|
Method for detecting coal seam thickness information by using borehole radar multiple waves
|
|
CN112269010A
|
|
Variable inclination angle experimental device and method for simulating multi-horizontal-hole grouting of water guide fault
|
|
CN112267842A
|
|
Mining high-precision hydraulic permanent magnet drill rod grabbing device
|
|
CN112253236A
|
|
Method for cleaning data of mine electrical method monitoring data by utilizing correlation analysis
|
|
CN112253075A
|
|
Pneumatic control multi-path parallel sand adding system for coal mine hydraulic fracturing and use method
|
|
CN112253070A
|
|
Method for eliminating outburst by sectional seam-making and coal-washing of horizontal well in linkage mode of top and bottom of thick coal seam
|
|
CN112253093A
|
|
Distributed drilling track rapid measurement method and device
|
|
CN112227975A
|
|
Double-connection drill rod imitating animal tendon-bone structure
|
|
CN112253187A
|
|
Method for inhibiting mining damage depth based on clay-based slurry advanced grouting modified bottom plate hard rock
|
|
CN112252966A
|
|
Automatic hole finding system for drilling site of vehicle-mounted drilling machine and implementation method
|
|
CN112127797A
|
|
Convertible drill bit and drilling tool combination and method for directional drilling of underground coal mine
|
|
CN112248226A
|
|
Paste filling material spiral continuous stirring device and paste material preparation method
|
|
CN112253170A
|
|
Coal mining curtain grouting device and grouting method thereof
|
|
CN112112575A
|
|
Garrulous soft coal seam airtight coring bit suitable for ground drilling
|
|
CN112253113A
|
|
Method for weakening hard gangue layer by coal mine underground directional long drilling and staged hydraulic fracturing
|
|
CN112253114A
|
|
Method for weakening hard gangue layer in coal seam by underground coal mine deep hole hydraulic presplitting
|
