| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 02/27/2014 | US20140056646 Apparatus and method for mining coal |
| 02/26/2014 | CN103603689A Curtain grouting construction method for treating mined-out areas |
| 02/26/2014 | CN103603688A Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof |
| 02/26/2014 | CN103603682A Roof supporting method applicable to cutting, drifting and cemented filling mining |
| 02/26/2014 | CN103603665A Hanging wall side orebody extracting method in mine mining range |
| 02/26/2014 | CN102865103B Distributed using method for mine underground water |
| 02/19/2014 | CN103590851A Underground waste-rock concrete preparation, pumping and filling system and method |
| 02/19/2014 | CN103590832A Pillar pre-isolation sublevel stick-filling mining method and ore body therefor |
| 02/19/2014 | CN103590830A Open pit and underground space-time synchronous mining method for multiple-ore body |
| 02/18/2014 | CA2685783C Collapsible cushion |
| 02/13/2014 | DE102012015760A1 Self-confirming displacement material for air-filled carnallitit degradation, is obtained by mixing specified amount of magnesium chloride hexahydrate and saturated magnesium chloride solution, and adding specified amount of additive |
| 02/12/2014 | CN203430567U Vertical type heat preservation sand silo |
| 02/12/2014 | CN203430566U Intensive mine filling system |
| 02/12/2014 | CN203430565U High pressure hydraulic gate valve |
| 02/12/2014 | CN203430536U Filling support punning mechanism with outer limiting device |
| 02/12/2014 | CN103573287A Method for determining thickness of flexible material of roadside flexible-strength double-layer composite support in gob-side entry retaining |
| 02/05/2014 | CN203420734U 灌浆装置 Filling device |
| 02/05/2014 | CN203420733U Goaf filling dehydration filter cloth rapid determining device |
| 02/05/2014 | CN103557029A Method for transition from non-pillar sublevel caving method to upward horizontal cut-and-fill method |
| 02/05/2014 | CN103557001A Low-section-height drift-pillar-free shrinkage-stoping, subsequent-filling and mining method |
| 01/30/2014 | DE102005015524B4 Verfahren zur dauerhaften Sicherung von abgeworfenen Bergwerksschächten A process for the permanent preservation of dropped mine shafts |
| 01/29/2014 | CN203412608U Support core type hydraulic bracket in coal mining and filling parallel operation |
| 01/29/2014 | CN203412607U Hydraulic support for realizing placing top coal and filling operation |
| 01/29/2014 | CN203412606U Spider type hydraulic bracket in parallel working of coal mining and filling |
| 01/29/2014 | CN103541764A Filling slurry stope height accurate indicator and early warning method thereof |
| 01/29/2014 | CN103538149A Ultrahigh water material composite solid waste pulping, delivering and mixing device |
| 01/23/2014 | US20140023444 Stope Fill Barrier |
| 01/22/2014 | CN103527200A Sill-pillar-free sublevel rhombus room subsequent filling mining method |
| 01/22/2014 | CN103527197A Solid cementing lane-type mining method for ultra thick seam |
| 01/22/2014 | CN103527196A Method for recovery of room-type coal pillar through loess filling |
| 01/22/2014 | CN103527195A Method for separately mining and transporting thick coal seam with gangue and backfilling goaf |
| 01/20/2014 | CA2821448A1 Stope fill barrier |
| 01/15/2014 | CN203394582U Grouting type filling retaining wall and goaf filling system |
| 01/15/2014 | CN103510984A Method for designing filling mining mass ratio of solid filling and coal mining |
| 01/15/2014 | CN102493838B Method for fully mechanized continuously-filling coal mining of steeply pitching coal seam |
| 01/08/2014 | CN203383851U Gob-side entry retaining flexible filling wall body structure |
| 01/08/2014 | CN203383843U Thin coal seam filling and coal mining bracket |
| 01/08/2014 | CN203383842U Three-column-type paste-filling hydraulic support used for underground thin coal seam |
| 01/08/2014 | CN103498697A Filling and construction method for goaf below tunnel |
| 01/08/2014 | CN103498696A Method for grouting, filling and compacting goaf filling body from roof roadway |
| 01/08/2014 | CN103498695A Method for filling and restoring soluble potassic salt ore shaft solution cavity |
| 01/08/2014 | CN102678121B Layered top-controlling filling mining method for residual ores in deep hole in diskless area |
| 01/01/2014 | CN103485820A Filling wall body capable of protecting laneway through soft yielding in non-chain-pillar filling mining and construction method thereof |
| 01/01/2014 | CN103485819A Method for inverted step bag type filling of large dip angle coal seam gob |
| 01/01/2014 | CN103485818A Stope roof caving space filling equipment and roof contacting method thereby |
| 01/01/2014 | CN102644464B Constructing method for mining embedded artificial boundary ore pillar from open-pit to underground mine |
| 12/25/2013 | CN103470304A Method for recharging magnesium chloride mother solution into potash salt ore gob |
| 12/25/2013 | CN103470303A Mine filling system and filling method thereof |
| 12/25/2013 | CN102619513B Room and pillar type medium-length hole filling mining method using bottom ore withdrawal structures simultaneously arranged in original rock |
| 12/25/2013 | CN102493839B Method for filling gob |
| 12/25/2013 | CN102444401B Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment |
| 12/25/2013 | CN102337925B Method for enlarging, filling and supporting coal-pillar-free mining roadway for fully-mechanized top coal caving |
| 12/25/2013 | CN102155256B Method for preventing gas extraction hole from collapsing |
| 12/18/2013 | CN203347838U Mine mortar air compressor capable of being monitored |
| 12/18/2013 | CN203347836U Scraper conveyor box type double middle plate gangue backfill middle trough |
| 12/18/2013 | CN103452795A Method and device for improving filling capacity of filling pumps by double-pump confluence |
| 12/18/2013 | CN103452586A Gob expanding material prestressed filling method and prestressed filling material |
| 12/18/2013 | CN102505961B Large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds |
| 12/18/2013 | CN102434182B Filling hydraulic bracket with automatic bag overturning mechanism |
| 12/11/2013 | CN102500590B Method for automatically flushing full pipe |
| 12/04/2013 | CN203321583U Vertical sedimentation sand silo |
| 12/04/2013 | CN103422884A Construction technology for formwork making and filling among gob-side entry retaining supports |
| 11/27/2013 | CN203308511U Pneumatic grouting pump |
| 11/27/2013 | CN203308510U Tamping mechanism for hydraulic support and hydraulic support |
| 11/27/2013 | CN203308509U Grid steel frame type filling siding wall |
| 11/27/2013 | CN103410545A Hydraulic support capable of realizing top coal caving and filling operation |
| 11/27/2013 | CN102425155B Method for reinforcing overlying shallow rockmass in mined-out area |
| 11/20/2013 | CN203296815U Mine filling grouting special-shaped quick coupling device |
| 11/20/2013 | CN203296814U Tailing panel wall for mining engineering |
| 11/20/2013 | CN103397907A Water drainage wall adopting brick structure and used in cut-and-fill stoping method |
| 11/20/2013 | CN103397906A Grouting type filling retaining wall, construction method of grouting type filling retaining wall and goaf filling system and method |
| 11/20/2013 | CN103397905A System and method for achieving natural striding, falling and filling of coal beds, flexible roadway protection and complete gob-side entry retaining |
| 11/13/2013 | CN203285484U Solid filling coal mining automatic control system |
| 11/13/2013 | CN103388488A Thin seam gob-side entry retaining filling method |
| 11/13/2013 | CN102562068B Mine subsequent cemented and non-cemented filling mining method |
| 11/06/2013 | CN103382849A Method for filling paste behind filling hydraulic supports |
| 11/06/2013 | CN103382848A Gob-side entry retaining method reserving shed legs for filling |
| 11/06/2013 | CN102619543B Mobile type hydraulic airtight filling device |
| 11/06/2013 | CN102518438B Roof regeneration medium-length hole ore blast backfill mining method |
| 10/30/2013 | CN203257463U Filling guiding mechanism of solid filling conveyor |
| 10/30/2013 | CN203257462U Ultra-thin coal seam filling mining hydraulic support high-speed throwing device |
| 10/30/2013 | CN203257461U Rapid filling mechanism for filling coal mining conveyor |
| 10/30/2013 | CN203257460U Potable gangue-blocking cage |
| 10/30/2013 | CN102425454B Construction method of walling and filling combined gob-side entry retaining wall body |
| 10/24/2013 | WO2012063009A3 Method for extinguishing coal mine fires and unit for performing said method |
| 10/23/2013 | CN203248193U Connecting old lane filling system of underground coal mine |
| 10/23/2013 | CN203248192U Connecting old lane filling framework of underground coal mine |
| 10/23/2013 | CN103362548A 灌浆装置 Filling device |
| 10/23/2013 | CN103362547A Underground feeding buffer for coal mine filling mining |
| 10/23/2013 | CN103360011A Carnallite mine goaf filling method |
| 10/16/2013 | CN103352722A Cemented filling close to back processing technology for goaf at barren rock filling background |
| 10/09/2013 | CN102367741B Mortar making system and process suitable for large horizontal sand silo of mine filling station |
| 10/02/2013 | CN203223251U Gangue blocking rail for filling gangue mining bin |
| 10/02/2013 | CN203223250U Filling milling ground batch charging system |
| 10/02/2013 | CN203223249U Deep well slurry full-pipe gravity-flow mobile pumped filling system |
| 10/02/2013 | CN103334785A Gob-side entry retaining flexible infilled wall body structure and filling method thereof |
| 10/02/2013 | CN103334784A Solid filling inclined material feeding method |
| 10/02/2013 | CN102071941B Fully mechanized mining gob-side entry retaining-based concrete block staggered joint longitudinal stacking wall forming method |
| 09/26/2013 | US20130251454 Mine seal with electrically non-conductive ties |
| 09/25/2013 | CN203214097U Mining mortar air compressing device |