| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 11/30/2011 | CN102261247A 一种条带逆向膏体充填的二次采煤方法 Twice a strip mining method of reverse paste filling |
| 11/30/2011 | CN101793157B 一种充填体支护的方法 One kind of filling body support method |
| 11/23/2011 | CN202047853U Gob-side entry retaining end hydraulic support |
| 11/23/2011 | CN202047851U Tamping mechanism for hydraulic support |
| 11/23/2011 | CN102251773A Route type upward horizontal layered filling mining method suitable for extremely complex ore body mining |
| 11/23/2011 | CN102247714A Paste continuous production and storage mechanism for mine filling and tailing processing |
| 11/17/2011 | WO2011140603A1 An underground mining apparatus and a method of mining subterranean material |
| 11/16/2011 | CN202039882U Liquid filling hydraulic bracket |
| 11/16/2011 | CN101761357B Mine mobile ladle tumbler |
| 11/09/2011 | CN202031643U 矸石储运装置 Waste rock storage device |
| 11/09/2011 | CN202031642U Telescopic height-adjusting transloading device of belt conveyor |
| 11/09/2011 | CN202031627U A coal seam spontaneous combustion control system |
| 11/09/2011 | CN101509395B The roof caving and tunnel protecting method |
| 11/02/2011 | CN202023590U Alarm device for blockage of pipeline in material filling process |
| 11/02/2011 | CN202023587U Commutation apparatus of filling pump |
| 11/02/2011 | CN202023586U Backboard mechanism for paste filling hydraulic support |
| 11/02/2011 | CN202023585U Detachable automatic bottom-up discharge-type charging hopper system |
| 11/02/2011 | CN102230396A Filling method capable of exploring while filling coal mine goaf |
| 11/02/2011 | CN101864987B Building method of filled wall body for gob-side entry retaining of large-inclination coal seam |
| 11/02/2011 | CN101775994B Tray used for vertically continuous delivery of solid material |
| 10/26/2011 | CN102226396A Non-explosive mining method by excavation, artificial group-column reconstruction, long-hole caving and subsequent filling |
| 10/19/2011 | CN202012371U Self-moving belt transferring machine |
| 10/13/2011 | US20110250021 Method and arrangement for detection and destruction of tunnels |
| 10/12/2011 | CN202007689U Unloading-type non-pressure air door |
| 10/12/2011 | CN102211917A High water-containing mud curing agent for mine filling and using method thereof |
| 09/28/2011 | CN201991562U 充填采矿循环利用尾砂板墙 Filling mining tailings recycling Wall |
| 09/28/2011 | CN102200026A Method for filling gob formed after mining by using gangue |
| 09/28/2011 | CN101482005B Down-hole gross coal dirt-discharging and mine water treating combined process |
| 09/21/2011 | CN201982138U 井下添加胶结料装置 Binder added downhole device |
| 09/21/2011 | CN201982137U 以矸石为骨料混凝土充填材料的井下制备装置 Preparation means underground waste rock as aggregate concrete filling materials |
| 09/21/2011 | CN201982127U 多级插接连杆式充填液压支架 Multi-level plug-link filling hydraulic support |
| 09/21/2011 | CN101598031B Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio |
| 09/14/2011 | CN201973398U 尾砂充填管道快速连接转换装置 Tailings backfill pipe quick-connect switching means |
| 09/14/2011 | CN201972733U 井下添加胶结料喷嘴装置 Add binder nozzle device Underground |
| 09/14/2011 | CN1963149B Mining method for replacement of banded coal under building by waste rock |
| 09/14/2011 | CN102182509A Cut-and-fill three-dimensional simulation test device and method |
| 09/14/2011 | CN102182507A Telescopic height-regulating transferring device of belt conveyer |
| 09/14/2011 | CN102182498A Comprehensive laneway-supporting method for cracked area in coal mine |
| 09/14/2011 | CN102182487A 流体充填液压支架 Fluid filled hydraulic support |
| 09/14/2011 | CN101761338B Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| 09/14/2011 | CN101586452B Method of monitoring coal mining solid pack pressure |
| 09/07/2011 | CN201963360U 膏体充填管道压力在线监测系统 Paste Filling the pipeline pressure line monitoring system |
| 09/07/2011 | CN101469612B Mining method for segmented metallic ore |
| 09/01/2011 | WO2011103620A1 A method of reducing subsidence or windblast impacts from longwall mining |
| 08/31/2011 | CN201953393U 具有压实功能的反四连杆式充填液压支架 Has the function of anti-compacted fill hydraulic four-link bracket |
| 08/31/2011 | CN201953391U 综合机械化充填采煤工作面端头液压支架 Mechanized coal mining face filled with hydraulic support ends |
| 08/31/2011 | CN102168580A Gangue tamping mechanism used for hydraulic support |
| 08/31/2011 | CN102168579A Rib-pillar-free continuous sublevel filling method for mining preparation in medium-thickness slope crushed ore body vein |
| 08/31/2011 | CN102168567A Filling supporting partition board bracket |
| 08/31/2011 | CN101775995B Floating dust-proof tensioning device for bottom of rotary tray-type vertical feeding system |
| 08/31/2011 | CN101769163B Guide slideway mechanism for rotary-tray type feeding system |
| 08/31/2011 | CN101424195B Method for digging gangue and filling tunnel for coal mine coal-rock drift |
| 08/24/2011 | CN201944334U 膏体充填干线管排污阀 Paste filling trunk pipe drain valve |
| 08/24/2011 | CN201943749U 一种井下废石高压泵送砼充填系统 A downhole pumping concrete waste rock high pressure filling system |
| 08/24/2011 | CN201943748U 一种带有压力检测功能的膏体充填堵管卸料闸门 Paste filling a pressure sensing function with a blocked pipe discharge gate |
| 08/24/2011 | CN201943747U 一种煤矿膏体充填管道系统 One kind of mine paste filling piping systems |
| 08/24/2011 | CN201943746U 膏体充填管道清洗流量调节控制装置 Paste filling pipe cleaning flow regulating control device |
| 08/24/2011 | CN201943745U 一种膏体充填管路伸缩装置 One kind of paste filling line stretching devices |
| 08/24/2011 | CN102162364A Layout method for underground dense-medium shallow-slot coal preparation in coal mine |
| 08/17/2011 | CN201934136U 一种适于采场充填用的混凝土输送装置 One kind suitable for stope filling with concrete delivery device |
| 08/17/2011 | CN201934135U 一种用于封闭区域可视控制充填模板 An enclosed area filled with visual control template |
| 08/17/2011 | CN102155262A Method for filling gas near roadway of coal mine gob-side entry retaining |
| 08/17/2011 | CN102155261A Paste combined filling method utilizing solid wastes of mine |
| 08/17/2011 | CN102155260A Method for filling heavy-pitch coal bed goaf |
| 08/17/2011 | CN102155259A Filling retaining wall constructed by using tunneling waste stones, and construction method of retaining wall |
| 08/17/2011 | CN102155258A Self-advancing transfer belt conveyor |
| 08/17/2011 | CN102155256A Method for preventing gas extraction hole from collapsing |
| 08/17/2011 | CN102155228A Fully-segmented presplitting squeezing primary-blasting mining method |
| 08/17/2011 | CN102155227A Continuous mining method in vertical direction and application thereof to full ore body continuous mining |
| 08/17/2011 | CN102155226A Roadway backfill mining method for coal seams with medium-high thickness |
| 08/17/2011 | CN102155225A Filling and mining method of coal gases |
| 08/17/2011 | CN101949302B Dynamic monitoring method of roadway-beside filling body and tunnel roof of gob-side entry |
| 08/17/2011 | CN101725368B Thick seam large mining height working face gob-side entry retaining method |
| 08/12/2011 | CA2690233A1 Drift saver |
| 08/10/2011 | CN201924950U Thin seam four-column paste filling and supporting integral hydraulic support |
| 08/10/2011 | CN102146794A Grouting, consolidating and gob-side tunneling process method |
| 08/10/2011 | CN101737080B Tray type solid material vertical and continuous delivery system |
| 08/10/2011 | CN101634231B Method for reinforcing and sealing coal mine and preventing gas |
| 08/03/2011 | CN201916000U 风动力充矸机 Refuse machine wind power charge |
| 07/27/2011 | CN102135006A Automatic tamper type waste filling hydraulic support |
| 07/27/2011 | CN101451443B Control method and control device for controlling water addition to tailings |
| 07/20/2011 | CN102128051A Method for filling gob area with attal in coal mine underhole |
| 07/20/2011 | CN101761356B Multi-point side-discharging device of filling belt conveyer |
| 07/13/2011 | CN102121399A Paste filling blockage pipe discharging gate with pressure detection function |
| 07/13/2011 | CN102121398A Cleaning flow regulating and controlling device for paste filling pipeline |
| 07/13/2011 | CN102121397A Paste filling pipeline system for coal mine |
| 07/12/2011 | CA2577564C Binder for mine tailings, alluvial sand and rock fill, or combinations thereof |
| 07/06/2011 | CN201891434U Chain type feeding system for filling coal mining |
| 07/06/2011 | CN102116174A System for monitoring pressure of paste-filling pipeline on line |
| 07/06/2011 | CN101701526B Goaf bag-type packing method |
| 06/29/2011 | CN201884042U High-gassy fully mechanized top coal-caving mining facility |
| 06/29/2011 | CN1936271B Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock |
| 06/22/2011 | CN201874615U Pipe-conveying paste cleaning ball catcher |
| 06/22/2011 | CN201874613U Tamping mechanism for gangue-filling hydraulic support |
| 06/22/2011 | CN101358536B Mine filling device |
| 06/16/2011 | DE102004031063B4 Verfahren zur Verfüllung untertägiger Hohlräume und zur Verfüllung der Hohlräume verwendbarer Füllbaustoff Method for filling of underground cavities and to fill the voids usable Füllbaustoff |
| 06/15/2011 | CN201865674U Mold bag for concreting gob-side entry retaining partition wall |
| 06/15/2011 | CN102094676A Optimized model system of tray-type machine for vertically and continuously conveying solid materials |
| 06/15/2011 | CN102094664A Hydraulic bracket for end of comprehensive mechanized filling coal face |
| 06/08/2011 | CN201857994U Downhole gangue sorting and filling system |