| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 10/03/2012 | CN102704974A Hydraulic bracket and method for drawing, filling and mining at high position |
| 10/03/2012 | CN102704934A High-yield and low-cost subsequent filling mining method for underground mine |
| 10/03/2012 | CN102704933A Isolated-section grouting filling coal-mining method for mining overburden rock |
| 10/03/2012 | CN102211917B High water-containing mud curing agent for mine filling and using method thereof |
| 10/03/2012 | CN101858215B Road retained method for extrusion molding of waste rock |
| 09/19/2012 | CN102678173A High-strength leakproof packing structure of gob-side entry retaining roadside and construction method thereof |
| 09/19/2012 | CN102678121A Layered top-controlling filling mining method for residual ores in deep hole in diskless area |
| 09/19/2012 | CN102678119A High-efficiency filling mining method for controlling rock mass movement |
| 09/12/2012 | CN202431302U Filling retaining wall device for high large-scale mining stope in roadway |
| 09/12/2012 | CN202431301U Device for filling roadway |
| 09/12/2012 | CN202430718U Slurry pressing machine |
| 09/12/2012 | CN102661170A Process and device for continuously stirring and filling paste-like body for mine manufactured by use of building waste |
| 09/12/2012 | CN102661169A Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars |
| 09/12/2012 | CN102661160A Two-pillar hidden type filled hydraulic support |
| 09/05/2012 | CN202417592U Paste multi-layer filling simulation test system |
| 09/05/2012 | CN202417524U Mine reinforcement material filling slip casting gun |
| 09/05/2012 | CN101967993B Underground gangue sorting and filling system and method |
| 09/05/2012 | CN101943024B Whole pulling and moving type whole-process unloading belt conveyor for coal mine underground filling |
| 09/05/2012 | CN101737052B Sublevel fill-mining method |
| 08/29/2012 | CN202402075U Goaf filling ramming device |
| 08/29/2012 | CN202402074U Paste retaining mould for paste-like backfill |
| 08/29/2012 | CN202402073U Filling air bag for mined out space |
| 08/29/2012 | CN202402072U Floating retractable filling isolation board |
| 08/22/2012 | CN202391471U Double-layer sliding mould filling system of gob-side entry retaining |
| 08/22/2012 | CN202391470U Vertical pipe supporting device under super-deep seawater |
| 08/22/2012 | CN202391445U Hydraulic filling bracket with automatic bag turning mechanism |
| 08/22/2012 | CN202391443U Pushing and tamping device specially for end filling hydraulic support |
| 08/22/2012 | CN102644464A Constructing method for mining embedded artificial boundary ore pillar from open-pit to underground mine |
| 08/22/2012 | CN101845966B Process for filling coal mine goaf |
| 08/22/2012 | CN101793164B Device for compacting filled materials in coal mining goaf |
| 08/15/2012 | CN202379464U Crushing conveying system for mine filling preparation station |
| 08/15/2012 | CN102635357A Pillarless phased caving method with top tailing crushed stone filling and sectional water injection binding |
| 08/15/2012 | CN101792291B High-water expansion filling material |
| 08/08/2012 | CN202370562U Solid waste filling coal mining hydraulic support frame |
| 08/08/2012 | CN202370521U Steel wire rope cemented backfill for backfilling gob of post-exploited mine |
| 08/01/2012 | CN102619890A Spherical transitional structure |
| 08/01/2012 | CN102619559A Device system and method for filling fluid materials in mine goaf |
| 08/01/2012 | CN102619543A Mobile type hydraulic airtight filling device |
| 08/01/2012 | CN102619513A Room and pillar type medium-length hole filling mining method using bottom ore withdrawal structures simultaneously arranged in original rock |
| 08/01/2012 | CN101824985B Non-coal pillar mining method of protective coal pillars in coal mine |
| 07/25/2012 | CN202348340U Compactor for filling mining hydraulic support |
| 07/25/2012 | CN202348339U Crawler travelling type solid filling material transfer conveyer |
| 07/25/2012 | CN202346373U Comprehensive mechanized solid filling coal mining vertical charging and conveying system |
| 07/25/2012 | CN102606207A Mine gob filling and entry retaining device system and filling method |
| 07/25/2012 | CN102606206A Mobile filling method for managing underground gobs |
| 07/25/2012 | CN102606205A In-situ treatment method for underground gob |
| 07/25/2012 | CN102606159A Medium thick heavy-pitch crushed ore body frame type artificial top downward segmenting cemented filling method |
| 07/25/2012 | CN102269000B Front frame of integral paste filling and supporting hydraulic bracket |
| 07/18/2012 | CN202338358U 一种矿井充填管路自动切换装置 Filling in mine pipeline automatic switching devices |
| 07/18/2012 | CN102587977A Four-column and double-swing-beam type gangue filling hydraulic support |
| 07/18/2012 | CN102587976A Suspension type gangue filling mechanism |
| 07/18/2012 | CN102587975A Containing gangue filling and tamping swing beam |
| 07/18/2012 | CN102587974A Simple filling framework support |
| 07/18/2012 | CN102587973A Method for protecting high-stress ore pillars by aid of pressure relief precrack |
| 07/18/2012 | CN102587916A Method for filling and mining after ore caving |
| 07/18/2012 | CN101864989B Sylvite goaf filling method |
| 07/11/2012 | CN202326870U 一种缓冲装置 As a buffer device |
| 07/11/2012 | CN202325670U 综合机械化固体物充填采煤装置 Mechanized mining equipment filling solids |
| 07/11/2012 | CN202325669U 炮采膏体充填液压支架 Blasting mining paste filling hydraulic support |
| 07/11/2012 | CN202325668U 一种带有密封垫的充填隔离板 A gasket is filled with an isolation plate |
| 07/11/2012 | CN202325667U 采空区注浆用孔口压力表 Goaf grouting pressure gauge with orifice |
| 07/11/2012 | CN202325666U 采空区注浆加压封孔装置 Goaf grouting pressure sealing device |
| 07/11/2012 | CN202325665U 自移机尾悬挂装置 Since moving tail suspension |
| 07/11/2012 | CN202325664U 地上组装式矿井充填装置 Mine filling device assembled on the ground |
| 07/11/2012 | CN202325663U 后退式伸缩固体废物充填桥式转载机 Back telescopic loader solid waste filling bridge |
| 07/11/2012 | CN202325651U 充填上料转载机械 Mechanically reproduced material filling |
| 07/11/2012 | CN202325591U 充填液压支架伸缩式隔离门 Filling hydraulic telescopic stand isolated gate |
| 07/11/2012 | CN202325590U 煤矿回填的充填液压支架 Filling hydraulic support mine backfill |
| 07/11/2012 | CN202321638U 综合机械化固体废弃物充填采煤地面运输系统 Solid waste filling mechanized coal mining ground transportation systems |
| 07/11/2012 | CN102562151A Multifunctional water filtering filling mine and use method thereof |
| 07/11/2012 | CN102562150A Tamping mechanism for gangue filling hydraulic support |
| 07/11/2012 | CN102562149A Automatic bag-overturning filling method in worked-out area |
| 07/11/2012 | CN102562148A Iron tailings cementing-filling method |
| 07/11/2012 | CN102562147A Simulation test system for multilayer filling of paste |
| 07/11/2012 | CN102562146A Construction gap filling method and device for shield through air pushing section |
| 07/11/2012 | CN102562145A Dry-type cement filling method realized by aid of extracted tail salt of salt deposit |
| 07/11/2012 | CN102562112A Four-column suspension swinging beam type gangue filling hydraulic support |
| 07/11/2012 | CN102562069A Fluid filling and replacement mining technology for coal bed on highly confined water body |
| 07/11/2012 | CN102562068A Mine subsequent cemented and non-cemented filling mining method |
| 07/11/2012 | CN102562065A Sublevel open-stop and delayed filling mining method |
| 07/11/2012 | CN101598032B Goaf grouting method for constructing extra-high voltage poles and towers |
| 07/04/2012 | CN202301424U 过渡铰接结构 Transition articulated structure |
| 07/04/2012 | CN202300517U 一种用于地下矿山充填的大型卧式砂仓 A large horizontal underground mine sand filling positions |
| 07/04/2012 | CN202300516U 防离析连续充填管 Anti-segregation continuous filling pipe |
| 07/04/2012 | CN202289940U 一种大型电气联动搅拌器 A large, electrical linkage stirrer |
| 07/04/2012 | CN102536317A Device and process for filling aggregate into stratum cavities through surface drilling |
| 07/04/2012 | CN102536316A Multiplayer paste-filling simulation-testing method |
| 07/04/2012 | CN102536315A Filling method of potash mine goaf |
| 07/04/2012 | CN101985887B End supporting, filling and transshipping system of coal face |
| 07/04/2012 | CN101672197B Processing method for high-pressure water-enriched filling karst cavity |
| 06/27/2012 | CN102518438A Roof regeneration medium-length hole ore blast backfill mining method |
| 06/27/2012 | CN102515683A Filling paste prepared from salt deposit exploitation tail salt and consolidated filling method thereof |
| 06/27/2012 | CN101818643B Stepped non-pillar continuous filling mining method for deep well super high large breaking ore body panel |
| 06/20/2012 | CN202277806U 一种小型气动搅拌器 A small pneumatic stirrer |
| 06/20/2012 | CN102505962A Stripping, backfilling and conveying system for open-pit mines |
| 06/20/2012 | CN102505961A Large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds |
| 06/20/2012 | CN102500590A Method for automatically flushing full pipe |
| 06/13/2012 | CN102493840A Method for filling underground spaces and system for filling underground spaces |
| 06/13/2012 | CN102493839A Method for filling gob |
| 06/13/2012 | CN102493838A Method for fully mechanized continuously-filling coal mining of steeply pitching coal seam |