| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 03/17/2010 | CN101672198A Method for forming artificial ore pillar and corresponding mining method |
| 03/17/2010 | CN101672197A Processing method for high-pressure water-enriched filling karst cavity |
| 03/03/2010 | CN101660426A Method for conveying coal and refilling ash and slag in goafs of slapithead power plant |
| 02/24/2010 | CN201412180Y Large vertical depth solid charging system with filling technology in coal mining |
| 02/24/2010 | CN201412158Y Solid fill-mining conveyor |
| 02/17/2010 | CN201407071Y Paste filling pump used for rail/wheel type coal mine |
| 02/17/2010 | CN201407070Y Waste roadway filling walking-type gangue throwing machine |
| 01/27/2010 | CN201391335Y Supporting type hydraulic automatic template |
| 01/20/2010 | CN201386570Y Impact air flow type concrete dry-output humidifying and solidifying machine |
| 01/13/2010 | CN201381877Y Internal spiral air flow generator |
| 12/23/2009 | CN201367918Y Rotary wind current type pipeline waste rock removing machine |
| 12/23/2009 | CN201367917Y Impact wind pressure type pipeline waste rock removing device |
| 12/09/2009 | CN201358814Y Self-advancing transition device of gangue filling machine |
| 12/09/2009 | CN201358813Y Cast filling compacting equipment for waste rock in mine |
| 12/09/2009 | CN101598032A Goaf grouting method for constructing extra-high voltage poles and towers |
| 12/09/2009 | CN101598031A Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio |
| 12/02/2009 | CN201354642Y Large-scale self-advancing gob-side entry retaining filling supporting stand |
| 12/02/2009 | CN101592041A Two-stage airlock screw feeder |
| 12/02/2009 | CN101592040A Impact wind pressure type pipe waste rock discharge device |
| 12/02/2009 | CN100564807C Tunnel gangue filling machine |
| 11/25/2009 | CN101586470A Advance drilling method for high-pressure water-rich filling cavity |
| 11/25/2009 | CN101586460A Coal mining solid filling method |
| 11/25/2009 | CN101586452A Method of monitoring coal mining solid pack pressure |
| 11/25/2009 | CN100562646C Fully mechanized top coal roof multiple segment control exploration method for deeply inclined coal seam |
| 11/18/2009 | CN100560943C Walking refuse rock rapid filling machine |
| 11/12/2009 | CA2654815A1 Mine seal with electrically non-conductive ties |
| 10/28/2009 | CN101566072A Large vertical depth solid feeding system and large vertical depth solid feeding process for filling extracted coal |
| 10/21/2009 | CN201330617Y High-wear-resisting energy-saving filling machine for mine |
| 10/21/2009 | CN101560886A Application process for quick solidifying material for mining |
| 10/21/2009 | CN101560883A Gob-side entry retaining work mould base |
| 10/14/2009 | CN101555802A Walking type waste rock filling machine for filling abandoned and old laneway |
| 09/30/2009 | CN201318193Y Buffer |
| 09/23/2009 | CN201314242Y Mining gel, slurry and solidification foam multi-function filling pump |
| 09/23/2009 | CN201314241Y Built-in three-dimensional strengthening rib-strengthened filled wall structure for roadway retained for next sublevel |
| 09/09/2009 | CN201306187Y Novel central slot for filling conveyor |
| 09/09/2009 | CN101526008A Rotary wing flowing type pipeline waste stone discharger |
| 09/02/2009 | CN101519977A Method for fixing gob-side entry retaining roadside packing body on coal seam with big declined angle |
| 08/26/2009 | CN101514639A Pressure reduction method of mine hydraulic filling overpressure and device thereof |
| 08/26/2009 | CN101514633A Non-roadside supporting gob-side entry retaining process |
| 08/26/2009 | CN101514631A Impact air flow type concrete dry-conveying and wet-concreting machine |
| 08/19/2009 | CN101509395A The roof caving and tunnel protecting method |
| 08/12/2009 | CN201288586Y Structure for preventing slipping of filled wall body along spatially keeping lane |
| 07/15/2009 | CN101482028A Method for preventing pipe blocking of waste rock pumping and filling system |
| 07/01/2009 | CN201265431Y Flexible-connecting telescopic roadside filling vehicle |
| 07/01/2009 | CN101469614A Filling apparatus and filling technique |
| 06/24/2009 | CN101463732A Continuous waste rock back-filling system for coal mine down-hole goaf |
| 06/10/2009 | CN101451443A Control method and control device for controlling water addition to tailings |
| 06/10/2009 | CN101451442A Control method and control device for controlling auxiliary material addition to tailings |
| 06/10/2009 | CN101451441A Filling device and exhaust apparatus thereof |
| 06/10/2009 | CN101451440A Control method and control device for controlling auxiliary material and water addition to tailings |
| 06/03/2009 | CN201250667Y Full tailings mortar filling tower with the function of disaggregation of flocculent layers |
| 06/03/2009 | CN100494635C Method for filling goaf by gangue |
| 05/14/2009 | DE102007049182B3 Producing potassium-magnesium-fertilizer and filling material, from polymineralic raw potassium salt, comprises e.g. fragmenting dry raw salt by sieving to different fractions and separating to magnetic and non-magnetic fractions |
| 05/06/2009 | CN101424195A Method and equipment for digging gangue and filling tunnel for coal mine coal-rock drift |
| 05/06/2009 | CN100485161C Upward spacing admission passage filling mining method |
| 04/15/2009 | CN101408111A Mine cemented filling dust removing process and apparatus |
| 04/08/2009 | CN100476162C Method for forming solidified filler by filling phosphorous gypsum in downhole goaf |
| 03/25/2009 | CN101392659A Method for directly utilizing downhole gangue |
| 03/25/2009 | CN101392652A Bottom column stope process |
| 03/04/2009 | CN201202494Y Walking type gangue rapid filling machine |
| 02/25/2009 | CN101372892A Total tailings slurry placement slurry filling tower having flocculent layer cracking function |
| 02/25/2009 | CN101372891A Strip filling integral backstopping coal mining method |
| 02/25/2009 | CN100464057C Method of supporting along spatially keeping lane end |
| 02/04/2009 | CN201190581Y Ramming device |
| 02/04/2009 | CN101358542A Mine backfill equipment |
| 02/04/2009 | CN101358541A Mine filling device |
| 02/04/2009 | CN101358540A Sand warehouse for filling device |
| 02/04/2009 | CN101358539A Sand warehouse for mine filling device |
| 02/04/2009 | CN101358538A Mine filling device |
| 02/04/2009 | CN101358537A Sand warehouse for mine packing means |
| 02/04/2009 | CN101358536A Mine filling device |
| 02/04/2009 | CN101358535A Sand warehouse for filling device |
| 02/04/2009 | CN101358534A Filling equipment in mined-out area |
| 01/29/2009 | DE10236795B4 Verfahren zum Verfüllen tiefer Schächte Method for filling deep wells |
| 01/22/2009 | DE102007025016B3 Roadway, tunnel and gallery blocking method for e.g. mine, involves filling breaking line with ballast, which is fixed ahead and behind sealing structure, and clamping sealing structure on both sides by ballast filling |
| 01/21/2009 | CN101349160A Sand cabin for filling devices |
| 12/31/2008 | CN201173137Y Filing device |
| 12/31/2008 | CN201173136Y Exhauster and filling device |
| 12/31/2008 | CN201173135Y Control device for adding adjuvant and water to filled tailing |
| 12/31/2008 | CN201173134Y Cemented filling device |
| 12/24/2008 | CN201170118Y Silk net apparatus for filling dehydration |
| 12/24/2008 | CN101328809A Non-bottom pillar deep hole falling-back type mining method |
| 12/17/2008 | CN201165881Y Downhole gangue pump filling system |
| 12/17/2008 | CN201165880Y Coal mine semi-ingredient laneway digging gangue roadside filling device |
| 12/16/2008 | US7464992 Method for forming a barrier |
| 12/10/2008 | CN201162542Y Control equipment used for controlling accessories added to milltailings |
| 12/10/2008 | CN201162541Y Control equipment used for controlling water supply to milltailings |
| 12/03/2008 | CN201159088Y Inorganic light material on-site filling device for coal mine down-hole cavity |
| 11/26/2008 | CN201156185Y Fuzzy control apparatus for filling pulp concentration control |
| 11/12/2008 | CN201148880Y Dredging apparatus filling with paste delivery pipeline using fill mining method |
| 10/22/2008 | CN101289943A Adjustable type hydraulic formwork |
| 10/22/2008 | CN101289939A Integrated suspension device for retaining a lane for next sublevel |
| 10/15/2008 | CN201133258Y Coal mine self-moving type filling wall-blocking machine |
| 10/15/2008 | CN101285384A Large diameter, deep borehole and non undercutting mining method |
| 10/08/2008 | CN101280689A Inorganic light material on site filling apparatus for coal mine down-hole cavity |
| 09/24/2008 | CN101270672A Artificial ore pillar construction method |
| 09/24/2008 | CN101270671A Low-cost wet-type high-efficiency filling method for underground mine |
| 09/17/2008 | CN101265808A Coal mine conjuncted asynchronous bracket filled block wall |
| 08/27/2008 | CN101251032A Walking refuse rapid filling machine |
| 08/27/2008 | CN101250989A Surface drilling down-hole sealing technique without unpackaging condition |