| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 09/25/2013 | CN203214096U Mill tailing bin feeding pipeline gate mechanism |
| 09/25/2013 | CN203214087U Hydraulic support |
| 09/25/2013 | CN203214086U Hydraulic support |
| 09/25/2013 | CN203214085U Hydraulic support |
| 09/25/2013 | CN103321678A Gob filling device and gob filling method capable of prolonging service life of filling drilled hole |
| 09/25/2013 | CN103321677A Method for actively controlling motion of coal mine critical layers by using strip filling walls |
| 09/25/2013 | CN103321675A Method and equipment for pneumatically conveying and filling gangue in coal mine well |
| 09/18/2013 | CN103306720A Inclined separated layer solid filling coal mining method for super thick coal seam |
| 09/18/2013 | CN103306719A Coal mine underground drilled hole filling and reinforcing device and method |
| 09/18/2013 | CN103306697A Three-column paste body filling hydraulic bracket for underground thin coal seam and four-step paste body filling process |
| 09/18/2013 | CN102094676B Optimized model system of tray-type machine for vertically and continuously conveying solid materials |
| 09/11/2013 | CN203189063U Airtight device for filling support roadway |
| 09/11/2013 | CN203189062U Hole drift filling sealing device |
| 09/11/2013 | CN103291355A Energy-saving method and system for underground mine double-slurry inputting and discharging |
| 09/11/2013 | CN103291354A Filling and reinforcing method for floor roadway cross-layer pressure-relief borehole |
| 09/11/2013 | CN103291305A Quick and low-cost artificial fake roof construction method for ground mine |
| 09/11/2013 | CN103291302A Mining method based on bottom-column-free filling method |
| 09/11/2013 | CN103291300A Mounting method of immediate roof dynamic monitor of comprehensive mechanized solid-filling coal mining |
| 09/11/2013 | CN102392641B Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method |
| 09/04/2013 | CN203175613U Observation mould plate for filling |
| 09/04/2013 | CN203175612U Mine filling system |
| 09/04/2013 | CN203175611U Filler conveying pipeline |
| 09/04/2013 | CN203175610U Filling system for gob-side entry retaining of mine |
| 09/04/2013 | CN203175609U 柔性充填袋 Flexible pouch filling |
| 08/28/2013 | CN203161219U Complete equipment for underground dirt band coal layer mining and transporting separated gangue backfilling method |
| 08/28/2013 | CN103267008A Piston type industrial pump pumping oil cylinder reversing buffer system and control method thereof |
| 08/28/2013 | CN103266914A Automatic solid-filling coal mining control system |
| 08/28/2013 | CN103266893A Application of non-coal-pillar coal mining method in under-protected stratum exploitation |
| 08/21/2013 | CN203147136U T-branch pipe for mine downhole filling |
| 08/21/2013 | CN203146014U Igloneige pneumatic grouting pump |
| 08/21/2013 | CN203146013U Material slurry filling multipoint lime feeding device |
| 08/21/2013 | CN203146012U Jacking chambers of filling body |
| 08/21/2013 | CN203146011U Slurry conveying pipe for mine downhole filling |
| 08/21/2013 | CN102434203B Gob-side entry retaining double-layer sliding die filling method |
| 08/21/2013 | CN102432994B Polyurethane-based flame-retardant antistatic multi-nano-component foam material, and preparation method thereof |
| 08/21/2013 | CN102261247B Secondary coal-mining method for reversely filling paste in stripes |
| 08/14/2013 | CN103244178A Method for controlling diffusion and migration of underground gasification residual pollutants |
| 08/14/2013 | CN103244177A Goaf treatment method based on filling raises with surface barren rock |
| 08/14/2013 | CN103244140A Method for arranging drilling chamber in backfill mining |
| 08/14/2013 | CN103244124A Method for coal mine tunnel working surface to pass through abandoned roadway in forced caving pressure relief mode |
| 08/14/2013 | CN103244123A High-dipping medium thick ore body mining method |
| 08/14/2013 | CN103242024A Leopoldite goaf cementation filler and filling method thereof |
| 08/14/2013 | CN102418555B Method for filling mine goaf by utilizing high-concentration all tailing cement |
| 08/07/2013 | CN203114339U Full-automatic gangue conveyer for coal gangue backfilling |
| 08/07/2013 | CN203114338U Supporting equipment for filling |
| 08/07/2013 | CN103233774A Coal mine underground connecting cross-channel filling system |
| 08/07/2013 | CN103233773A Filling material guiding mechanism of solid filling conveying machine |
| 08/07/2013 | CN103233772A Rapid filling mechanism for filling coal mining conveyor |
| 08/07/2013 | CN103233771A Roof contacting process in goaf filling treating procedure |
| 08/07/2013 | CN103233755A Six-prop supporting split base type middle filling support |
| 08/07/2013 | CN103233739A Mining method for thick and large ore pillar under filling body wrapping |
| 08/07/2013 | CN101358541B Mine filling device |
| 08/01/2013 | US20130193743 Apparatus and Method for Mining Coal |
| 07/24/2013 | CN203081501U Remote control forming device for mine concrete stonewalls |
| 07/24/2013 | CN203081477U Mine hydraulic support |
| 07/24/2013 | CN103216266A Pressure detecting method for preventing clogging of filling pipeline |
| 07/24/2013 | CN103216263A Control method for emptying air in underground filling riser by using cut-off valve |
| 07/24/2013 | CN103216262A Control method for goaf face filling by using multi-valve linkage |
| 07/24/2013 | CN103216261A Automatic filling system for mining under villages, railways and water |
| 07/24/2013 | CN103216259A System protecting underground coal bed hole drilling from collapse |
| 07/24/2013 | CN102020979B Bonding filling material and method for carrying out downhole filling using the same |
| 07/17/2013 | CN203067027U Vaulted gob-side entry filling wall body structure |
| 07/17/2013 | CN203067026U Gob-side entry retaining filling wall body structure of hollow built-in reinforced rib |
| 07/17/2013 | CN203067006U Hydraulic support |
| 07/17/2013 | CN101358537B Sand warehouse for mine packing means |
| 07/10/2013 | CN203050777U Shakeout filling device at water outlet position of drilling hole |
| 07/10/2013 | CN103195476A Portable waste rock retaining cage |
| 07/10/2013 | CN103195463A Filling gas explosion eliminator |
| 07/10/2013 | CN103195426A Steep-coal-seam long wall face non-pillar coal mining method |
| 07/10/2013 | CN102269013B Method for mechanically filling gangue on single support working surface under complex coal seam condition |
| 07/04/2013 | US20130170912 Stowing method for goaf of potash salt ore |
| 07/03/2013 | CN203035256U Waste rock bashing device capable of preventing waste rock from being lifted to ground from well |
| 07/03/2013 | CN103184870A Open backfilling mining method during borehole drilling period |
| 07/03/2013 | CN101975085B Gob-side entry retaining reinforcing filling body structure construction method |
| 07/03/2013 | CN101864956B Sectional coal pillar-free exploitation method |
| 06/26/2013 | CN203022810U Automatic control system of all-tailing filling and preparing station |
| 06/26/2013 | CN203022809U Reinforced filling board wall |
| 06/26/2013 | CN203022808U Roof-contacted filling flow guide device |
| 06/26/2013 | CN203018229U Nozzle for activated pulping of tailing sands in vertical type sand bunker |
| 06/26/2013 | CN103174457A High-speed material throwing device for ultra-thin coal layer filling and mining hydraulic bracket |
| 06/26/2013 | CN103174456A Mine under-shaft slurry filling equipment |
| 06/26/2013 | CN102261257B Hydraulic support for filling after installation and operating method thereof |
| 06/19/2013 | CN203008966U Grouting obturator |
| 06/19/2013 | CN103161498A Steep coal seam section coal pillar roadside filling method |
| 06/19/2013 | CN103161480A Method for actively supporting lane side filling gob-side entry retaining |
| 06/19/2013 | CN103161469A Method for excavating vertical shaft to underground repair pipe-jacking tool pipe |
| 06/19/2013 | CN103161468A Well and rock salt solution mining-well recharging filling circulation mining method |
| 06/19/2013 | CN103161467A Horizontal moderately thick mine body compartment type filling mining method |
| 06/19/2013 | CN102515683B Filling paste prepared from salt deposit exploitation tail salt and consolidated filling method thereof |
| 06/19/2013 | CN102352773B Sectional filling method of old lane |
| 06/12/2013 | CN202991088U Multi-step-pitch supporting type filling hydraulic support with tail beam |
| 06/12/2013 | CN202991084U Front top beam multi-step filling hydraulic support |
| 06/12/2013 | CN202991081U Backstop gangue beam suspension swing beam type gangue filling hydraulic support with side guard plates |
| 06/12/2013 | CN202983829U Barren rock cemented filling system |
| 06/12/2013 | CN103147793A Non-chain-pillar roadway protection method adopting filling beside thin coal seam roadway |
| 06/12/2013 | CN103147792A Drift type coal mining filling method |
| 06/12/2013 | CN103147761A Filling mining method of gently inclined thin mineral deposit with soft roof |
| 06/12/2013 | CN102251773B Route type upward horizontal layered filling mining method suitable for extremely complex ore body mining |
| 06/12/2013 | CN101285384B Large diameter, deep borehole and non undercutting mining method |
| 06/05/2013 | CN202971611U Wear resistant sleeve for stirring shaft of coal mining paste filling pump |