| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 06/08/2011 | CN201857629U Speed reduction brake mechanism of electric scraper |
| 06/08/2011 | CN102086771A Filling template bracket |
| 06/08/2011 | CN102086765A High-sublevel multi-layer mining method of ultrathin copper ore body |
| 06/01/2011 | CN101967992B Different-strength bearing roadside filler for pillar-free mining of thin coal bed |
| 05/25/2011 | CN201843640U Multi-angle distribution filling device |
| 05/25/2011 | CN102072338A Drainage valve for paste filling line pipe |
| 05/25/2011 | CN102071969A Filling pump commutating device |
| 05/25/2011 | CN102071968A Paste filling pipe expansion device |
| 05/25/2011 | CN102071967A Filling simulator for salt rock cavern |
| 05/25/2011 | CN102071941A Fully mechanized mining gob-side entry retaining-based concrete block staggered joint longitudinal stacking wall forming method |
| 05/25/2011 | CN102071940A Construction method for mine shaft through multilayer goaf |
| 05/18/2011 | CN201835870U Flexible packing bag capable of contacting with roof sufficiently |
| 05/18/2011 | CN201835869U Gob-side retained entry reinforcing fill structure |
| 05/18/2011 | CN201835851U Coal face end timbering, filling and transshipping system |
| 05/18/2011 | CN102061938A Filling process for recovering coal pillars by filling goaf with paste |
| 05/18/2011 | CN102061937A Visually controlled filling template used in closed area |
| 05/11/2011 | CN201826891U Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam |
| 05/11/2011 | CN101566072B Large vertical depth solid feeding system and large vertical depth solid feeding process for filling extracted coal |
| 05/11/2011 | CN101519977B Method for fixing gob-side entry retaining roadside packing body on coal seam with big inclined angle |
| 05/10/2011 | CA2612559C Shaft plugging system |
| 05/04/2011 | CN101358538B Mine filling device |
| 04/20/2011 | CN102020979A Bonding filling material and method for carrying out downhole filling using the same |
| 04/20/2011 | CN101008316B Phosphogypsum cementing and post-filling mining method and pulping technology thereof |
| 04/13/2011 | CN102011611A Strip-type filling method of high water-swelling material for controlling movement and deformation of overlying strata |
| 04/13/2011 | CN102011610A Supporting method of no-pillar mining mode for medium-thick coal seams |
| 04/13/2011 | CN102011588A House pillar type cutting and filling method of medium coal seam for controlling movement deformation of overlying rock |
| 04/06/2011 | CN102003208A Multi-angle material distribution filling device |
| 04/06/2011 | CN102003185A Sublevel stripe tail salt stoping dry-type filling-mining method |
| 03/30/2011 | CN101586460B Coal mining solid filling method |
| 03/30/2011 | CN101408111B Mine cemented filling dust removing process and apparatus |
| 03/23/2011 | CN201771552U Unequal-strength bearing roadside backfill for underground gob-side entry retaining of coal mine |
| 03/23/2011 | CN201771530U Coal mining support suitable for filling gangue |
| 03/23/2011 | CN101988389A Filling and supporting hydraulic support with compaction mechanism |
| 03/23/2011 | CN101988388A Filling and supporting hydraulic support with compaction mechanism |
| 03/16/2011 | CN201763389U Gob-side entry retaining roadside packing body and back dynamic monitoring device |
| 03/16/2011 | CN201763388U Foam mortar preparation device |
| 03/16/2011 | CN201763386U Integral pulling and moving type whole-course unloading belt conveyor for coal mine downhole filling |
| 03/16/2011 | CN101985887A End supporting, filling and transshipping system of coal face |
| 03/16/2011 | CN101215976B Down-hole gangue pump packing system and method |
| 03/09/2011 | CN201756981U Solid filling material multi-hole bottom unloading type conveyor |
| 02/23/2011 | CN101979837A Method for improving strength of full-tailings filling body under low-temperature environment |
| 02/16/2011 | CN201747404U Sand-seal water-filtering system for underground tailing fill |
| 02/16/2011 | CN101975085A Gob-side entry retaining reinforcing filling body structure and construction method thereof |
| 02/09/2011 | CN101967993A Underground gangue sorting and filling system and method |
| 02/09/2011 | CN101967992A Different-strength bearing roadside filler for pillar-free mining of thin coal bed |
| 02/02/2011 | CN201730589U Mineral filling adjusting valve |
| 01/26/2011 | CN101956565A Filling coal mining chain type feeding system |
| 01/26/2011 | CN101956556A Roof and bottom pillar-free stage upward continuous filling and mining method |
| 01/26/2011 | CN101586470B Advanced drilling method for high-pressure water-rich filling cavity |
| 01/19/2011 | CN201714411U Solid packed hydraulic support for working face |
| 01/19/2011 | CN101949302A Dynamic monitoring device of roadway-beside filling body and tunnel roof of gob-side entry and operating method thereof |
| 01/19/2011 | CN101949301A Different-strength bearing roadway-beside filling body of gob-side entry under coal mine |
| 01/19/2011 | CN101451441B Filling device and exhaust apparatus thereof |
| 01/12/2011 | CN201705389U Gangue pushing device for filling gangue in gob |
| 01/12/2011 | CN201705388U Goaf gangue filling device |
| 01/12/2011 | CN101943024A Whole pulling and moving type whole-process unloading belt conveyor for coal mine underground filling |
| 01/05/2011 | CN101936065A Template with rigid-flexible composite structure and partition wall construction method by retaining roadway along goaf thereof |
| 01/05/2011 | CN101514633B Non-roadside supporting gob-side entry retaining process |
| 12/30/2010 | DE102010024975A1 Making building material mixture for magnesium oxide concrete, comprises selecting particle distribution and particle shape of quartz surcharge and selecting a mixing solution based on magnesium chloride content and solution equilibrium |
| 12/29/2010 | CN201687499U Rear frame of paste filing and supporting integrative hydraulic support |
| 12/29/2010 | CN201687496U Four-column straight-guidebar wall retaining type filling hydraulic bracket |
| 12/29/2010 | CN201687491U Tail end paste filling structure of integrated hydraulic support supported and filled by paste |
| 12/29/2010 | CN101482028B Method for preventing pipe blocking of waste rock pumping and filling system |
| 12/22/2010 | CN101922292A Coal mine gob-side entry retaining roadside segment bearing unequal strength support principle and application |
| 12/15/2010 | CN201671657U Pulp blocking device for filling the paste-like objects on the coal mine working faces |
| 12/15/2010 | CN201671656U 煤矿井下矸石充填管路防护装置 Coal mine waste rock filling pipe guards |
| 12/15/2010 | CN201671655U Downhole coal and waste time-sharing transporting and filling system |
| 12/15/2010 | CN101915100A Loess-filling coal-mining method in a coal mine |
| 12/15/2010 | CN101328809B Non-bottom pillar deep hole falling-back type mining method |
| 12/08/2010 | CN101906991A Construction method for managing underground mined-out area or cavity |
| 12/08/2010 | CN101906979A Gob-side road retaining supporting method and road-injecting slip mould |
| 12/01/2010 | CN201661311U Waste-rock tamping mechanism for hydraulic support |
| 12/01/2010 | CN201661310U Waste rock roadside filling extruded formwork |
| 12/01/2010 | CN201661300U Filling timbering partition board support |
| 12/01/2010 | CN1804374B Method for preventing and controlling impact geopressure in longwall face gate of coal mine |
| 12/01/2010 | CN101372892B Total tailings slurry placement slurry filling tower having flocculent layer cracking function |
| 12/01/2010 | CN101165317B Filling device and method for filling down-hole goaf by same |
| 11/24/2010 | CN201650361U Guiding slideway mechanism for rotary tray-type feeding system |
| 11/24/2010 | CN201650360U Rear tail boom subsidiary pushing device |
| 11/24/2010 | CN201650359U Filling bag for temporarily supporting filling space |
| 11/24/2010 | CN201650358U Gob-side entry retaining filling bag capable of contacting with roof |
| 11/24/2010 | CN201650325U Mined out region bag type filling hydraulic rack |
| 11/24/2010 | CN101892862A Full tailing filling method in large goafs |
| 11/24/2010 | CN101892861A Mining double-side tailing filling strainer |
| 11/24/2010 | CN101892860A Method for entry retaining for walling at sides of road in steel cylinder support mode |
| 11/24/2010 | CN101892843A Porous bottom-dump conveyer of solid-state filling material |
| 11/24/2010 | CN101450510B Fuzzy control device and method for controlling filling-material concentration |
| 11/24/2010 | CN101289939B Integrated suspension device for retaining a lane for next sublevel |
| 11/20/2010 | CA2685783A1 Collapsible cushion |
| 11/17/2010 | CN201635765U Sand throwing device for gob under highway |
| 11/11/2010 | WO2010127447A1 Frozen backfill mix formulations and process for use thereof in underground mining applications |
| 11/11/2010 | CA2761155A1 Frozen backfill mix formulations and process for use thereof in underground mining applications |
| 11/10/2010 | CN101881181A Mine goaf tailing-filled concrete enclosing wall |
| 11/10/2010 | CN101881180A Coal face paste-like filling method and slurry-baffling device |
| 11/10/2010 | CN101881179A Coal mine up-dip working face slant range paste-like filling method |
| 11/05/2010 | CA2665410A1 Frozen backfill mix formulations and process for use thereof in underground mining applications |
| 11/03/2010 | CN201620913U Self-moving unloading belt conveyor for waste filling surfaces |
| 10/27/2010 | CN101871363A Time-sharing transporting and filling system for underground coal and waste rock |
| 10/27/2010 | CN101270671B Low-cost wet-type high-efficiency filling method for underground mine |
| 10/20/2010 | CN201610765U 采煤采空区充填物料压实装置 Coal mined-out area filling material compaction device |