| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 06/05/2013 | CN202970784U Coal mine paste filling hydraulic bracket for sealing by using tail boom |
| 06/05/2013 | CN202970783U Full tailing sand cementation filling system |
| 06/05/2013 | CN202970782U Full tailing sand cementation filling system |
| 06/05/2013 | CN202970781U Split side-extending type filling isolation device |
| 06/05/2013 | CN202970750U Large mining height front and rear top beam coaxial hinge joint filling coal mining hydraulic support |
| 06/05/2013 | CN202970749U Back top beam multi step pitch filling hydraulic support |
| 06/05/2013 | CN202970748U Waste rock filling hydraulic support |
| 06/05/2013 | CN103133034A Method and equipment for backfilling ground gangues into underground mined-out region |
| 06/05/2013 | CN103133033A Mine phosphogypsum cemented fill slurrying process |
| 06/05/2013 | CN103133031A Method and equipment for separating, conveying and filling underground coal and gangues |
| 06/05/2013 | CN102071967B Filling simulator for salt rock cavern |
| 05/29/2013 | CN202954849U Steel wire rope type leveling filling machine |
| 05/29/2013 | CN202954848U Long-stroke telescopic arm of filling machine |
| 05/23/2013 | DE102011119635A1 Pipe for delivery line for conveying bulk material, has spacer that is provided in annular space between inner pipe portion and outer pipe portion which is rested over two-point support on spacer rested on inside of inner pipe portion |
| 05/22/2013 | CN103114853A Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment |
| 05/15/2013 | CN202937301U Rail transit platform screen door infrared detection device |
| 05/15/2013 | CN103104287A Stripe gob filling repeated-mining method |
| 05/15/2013 | CN103104277A Multi-step-pitch band tail beam supporting-type filling hydraulic support |
| 05/15/2013 | CN103104275A Gangue filling hydraulic support |
| 05/15/2013 | CN103104274A Front top beam multi-step-pitch filling hydraulic support |
| 05/15/2013 | CN103104273A Rear top beam multi-step distance filling hydraulic support |
| 05/15/2013 | CN103104259A Inclination fragmentation ore body segment top board reconstruction middle-deep hole ore break down filling mining method |
| 05/15/2013 | CN102305069B Technology and equipment for separating coal and gangue and refilling gangue |
| 05/08/2013 | CN103089300A Structure and method for constructing multilayer heterogeneous gob-side entry retaining filling wall |
| 05/08/2013 | CN103089299A Obligate cavity channel gob-side entry retaining wall filling method |
| 05/08/2013 | CN103089298A Structure and method for building side direction multicolumn gob-side entry retaining filling wall body |
| 05/01/2013 | CN103075189A Thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method |
| 05/01/2013 | CN103075188A Downhole waste rock filling equipment and filling method using same |
| 05/01/2013 | CN103075156A Chessboard chamber pre-protection top upward middle-length hole ore-breaking segmented filling mining method |
| 04/24/2013 | CN202900320U Inorganic light thin material construction filling device for underground coal mine filling |
| 04/24/2013 | CN103061806A Composite roof thin seam fully-mechanized coal mining face gob-side entry retaining method |
| 04/24/2013 | CN103061805A Method for controlling inward movement of gob-side entry retaining filling wall |
| 04/24/2013 | CN103061768A Diskless region type connection roadway continuous sectional cut-and-filling stoping method shared by chamber and jambs |
| 04/24/2013 | CN103061767A Downward horizontal-slice dry-type filling mining method |
| 04/24/2013 | CN103061764A Goaf waste rock filling coal mining method of flexible shield support in half-edge coal seam |
| 04/17/2013 | CN202884202U Hydraulic control valve special for filling pasty fluid sizing agent conveying pipeline under the shaft |
| 04/17/2013 | CN202883006U Combined template |
| 04/17/2013 | CN103046955A Large-range goaf group filling method |
| 04/17/2013 | CN103046943A Hydraulic bracket |
| 04/10/2013 | CN202866890U Down-hole movable gangue adhesive stripe filling system |
| 04/10/2013 | CN202866889U Frame type leveling mechanism |
| 04/10/2013 | CN103032070A Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method |
| 04/10/2013 | CN101915100B Loess-filling coal-mining method in a coal mine |
| 04/03/2013 | CN202851079U High water material filling column |
| 04/03/2013 | CN202851078U High water material filling column bag body |
| 04/03/2013 | CN202851033U Bag-type filling hydraulic support in |
| 04/03/2013 | CN202851032U Sealing rubber board for filling type hydraulic pressure support |
| 04/03/2013 | CN103016053A Method of local filling to control surface subsidence in gob |
| 04/03/2013 | CN103016052A Solid filling scraper conveyer |
| 04/03/2013 | CN103016038A Method for coal extracting and gangue filling |
| 04/03/2013 | CN103011742A Actively-pressing high-swelling pasty filling material |
| 04/03/2013 | CN102182487B 流体充填液压支架 Hydraulic fluid filling bracket |
| 04/03/2013 | CN102094664B Hydraulic bracket for end of comprehensive mechanized filling coal face |
| 03/28/2013 | DE102004062744B4 Verfahren zur Herstellung von langzeitstabilen Puffersystemen gegenüber acidischen Einflüssen auf Magnesiumdepotbasis A process for preparing long-term stable against acidic buffer systems influences on magnesium basis Depot |
| 03/27/2013 | CN202832647U Horizontal sand bin for filling system |
| 03/27/2013 | CN202832646U Repeated coal-mining non-coal pillar entry-protection structure |
| 03/27/2013 | CN202823272U Mixing station for mine filling |
| 03/27/2013 | CN102996177A Method for reserving filling channel in operation with cement filling method |
| 03/27/2013 | CN102996131A Solid-filling coal mining method with two pre-excavating tunnels for advancing |
| 03/20/2013 | CN202810927U Fly ash cementation automatic filling system |
| 03/20/2013 | CN202810855U Underground movable cemented strip filling system by utilizing dug gangue |
| 03/20/2013 | CN102979572A Active reinforced filling wall and construction method |
| 03/20/2013 | CN102979571A All tailing sand dry discharge bonding filling system and filling method of filling system |
| 03/20/2013 | CN102979545A Large-mining-height front and rear top beam coaxial articulated fill coal mining hydraulic bracket |
| 03/20/2013 | CN102979526A Building process of ore removal trench by adopting filling method in medium-length hole sublevel mining |
| 03/13/2013 | CN202788932U Underground filling system |
| 03/13/2013 | CN202788931U Concrete grouting machine |
| 03/13/2013 | CN102966353A Arch-type full-mining method for three-unders coal in thick coal seam |
| 03/13/2013 | CN102061937B Visually controlled filling template used in closed area |
| 03/12/2013 | CA2469247C A method and means for recovering hydrocarbons from oil sands by underground mining |
| 03/06/2013 | CN202768071U Gob-side entry retaining system of high water content material packed columns |
| 03/06/2013 | CN202768070U Height adjustable gob-side entry retaining filling bag |
| 03/06/2013 | CN202768040U Bag type diaphragm filling hydraulic support |
| 03/06/2013 | CN102953756A Tamping mechanism for waste filling |
| 03/06/2013 | CN102953733A Central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method |
| 03/06/2013 | CN101839146B Coal mine gob filling system |
| 02/27/2013 | CN202756016U Ore pulp flow controller for waste rock filling |
| 02/27/2013 | CN102943689A Coal mine bulk stock cut and fill mining method |
| 02/27/2013 | CN102943674A Gangue bag filling method in thin coal seam wide roadway tunneling under tight roof |
| 02/27/2013 | CN102121398B Cleaning flow regulating and controlling device for paste filling pipeline |
| 02/20/2013 | CN202745933U Four-column double swing beam type gangue-filled hydraulic support |
| 02/20/2013 | CN202745932U Gangue-smashing device for gangue-filling hydraulic pressure support |
| 02/20/2013 | CN202745931U Underground backfilling and conveying system for ground gangue of coal mine |
| 02/20/2013 | CN202745927U Bamboo fence truck |
| 02/20/2013 | CN202741419U Treatment and reuse system of construction waste near coal district |
| 02/20/2013 | CN102937035A Method for rock mining and filling in mine goaf |
| 02/20/2013 | CN102155227B Continuous mining method in vertical direction and application thereof in full ore body continuous mining |
| 02/20/2013 | CN102155226B Roadway backfill mining method for coal seams with medium-high thickness |
| 02/13/2013 | CN202731991U Test model for banded filling, replacement and mining of fault protective coal pillar |
| 02/13/2013 | CN202731960U Mine goaf filling and roadway retaining device system |
| 02/13/2013 | CN102926801A Conveniently opened safety car window |
| 02/13/2013 | CN102926795A Gas extraction method and gas extraction system |
| 02/13/2013 | CN102926780A Containing gangue filling and tamping mechanism for gangue filling hydraulic support |
| 02/13/2013 | CN102926754A Two-tunneling bidirectional stripping two-step pre-support mining method |
| 02/13/2013 | CN102146794B Grouting, consolidating and gob-side tunneling process method |
| 02/06/2013 | CN102913279A Gangue clamping-proof structure for gangue filling tamping mechanism |
| 02/06/2013 | CN102913266A Two-stage telescopic tamping mechanism used for recrement filling hydraulic support |
| 02/06/2013 | CN102261262B High-performance foam mortar filling method for mine stope |
| 02/06/2013 | CN102226396B Non-explosive mining method of excavation, artificial group-column reconstruction, long-hole caving and subsequent filling |
| 01/30/2013 | CN202707104U Retaining wall support |