| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 12/04/2013 | CN203321531U Lining processing structure for underground cavern after collapse of top arch |
| 12/04/2013 | CN203321523U Large-span high-side-wall underground space building |
| 12/04/2013 | CN203321339U Jumbolter operation support |
| 12/04/2013 | CN103422871A Truss cable arrangement method for controlling super-large-section open-off cut roof |
| 12/04/2013 | CN103422869A Jet grouting and anchoring comprehensive construction method of soft rock tunnel |
| 12/04/2013 | CN102561940B Mechanical single-arm type hydraulic roof-bolter |
| 12/04/2013 | CN102278130B Process method for reinforcing and grouting of high-pressure water-rich solution cavity of tunnel |
| 12/03/2013 | US8596923 System and method for mine roof counter bore and cable bolt head securement therein |
| 11/28/2013 | WO2013174681A1 Rock anchor |
| 11/28/2013 | WO2013173901A1 Rock bolt and method of installing a rock bolt |
| 11/28/2013 | WO2012171044A3 An adhesive containing tubular rock anchor |
| 11/27/2013 | CN203308486U Loess tunnel foot-lock anchor rod safety construction protective device |
| 11/27/2013 | CN203308485U Anchor cable tensioning machine tool for mining |
| 11/27/2013 | CN203308484U Anchor rod installation device for wind coal drill |
| 11/27/2013 | CN103410542A Device and method for improving roadway base plate anchor rod anchor cable pore-forming efficiency and anchoring performance |
| 11/27/2013 | CN103410541A Anchor feeding device and clamp for hydraulic mechanical resin anchor bolt of tunnel support |
| 11/21/2013 | WO2013170312A1 Injection and drive arrangement for rock bolting |
| 11/21/2013 | WO2013108051A3 Device for a drainage boring system |
| 11/21/2013 | WO2013072143A3 Rock anchor |
| 11/20/2013 | CN203296793U Auxiliary lengthening device of sighting rod machine |
| 11/20/2013 | CN103397894A Anchor mechanism and engineering machinery with same |
| 11/20/2013 | CN103397859A Integrated drilling and draining floor anchor driller |
| 11/13/2013 | CN203285463U Rocker-type onboard roof bolter |
| 11/06/2013 | CN203271785U Anchor rod installing auxiliary device and anchor rod installing system |
| 11/06/2013 | CN203271784U Anchor rod fastener |
| 11/06/2013 | CN203271752U Multifunctional underground roadway tunneling locomotive |
| 11/06/2013 | CN103382847A Prestressed drilling, anchoring and grouting anchor cable and support method |
| 11/06/2013 | CN101824962B Method for soil mass supporting construction by jet mixing drilling tool |
| 10/30/2013 | EP2655798A1 Rock bolt |
| 10/30/2013 | CN203257439U Anchor rope total-length anchoring device used for coal mine soft-rock roadway |
| 10/30/2013 | CN203257438U Stirring connector and connecting structure of stirring connector and anchor bar |
| 10/30/2013 | CN102296976B Asymmetrical bolt-net-cable combined supporting method for special-shaped recovery tunnel of large inclination angle coal bed |
| 10/30/2013 | CN101603430B Adapter for setting self-drilling chemically anchored attachment element |
| 10/29/2013 | CA2563383C Method and arrangement for automatic mixing of water and concrete for rock bolting |
| 10/24/2013 | WO2013157686A1 Rock bolt and hydraulic pressure apparatus using same |
| 10/24/2013 | DE102012206613A1 Litzenanker Strand |
| 10/23/2013 | CN103362525A 锚固剂注入装置 Anchorage injection device |
| 10/23/2013 | CN102337903B Method of active coupling support in time and space for control of minimum deformation of surrounding rock of deep well roadway |
| 10/23/2013 | CN102296974B Rapid maintaining method for broken roof in stope |
| 10/23/2013 | CN102268993B Method for excavating tunnel in high liquid limit soil |
| 10/17/2013 | WO2013152393A1 Rock bolt resin mixer |
| 10/16/2013 | CN203239369U Improved expanding end anchor device |
| 10/16/2013 | CN203239366U Device for synchronous pre-supporting and anchoring following tunneling machine |
| 10/16/2013 | CN103352711A Method for consolidating rock coal body through deeply sealed holes and naked grouting cementing |
| 10/16/2013 | CN103352707A Multi-dimensional and multistage supporting method |
| 10/16/2013 | CN101784753B Hollow rock bolt, self -drilling rock bolt and method of forming a hollow rock bolt |
| 10/10/2013 | WO2013149283A1 A roof bolter |
| 10/09/2013 | CN203230443U Novel case expanding reverse wedging type slip casting anchor rod |
| 10/09/2013 | CN203230442U Coal wall reinforcing structure of high cutting and overhand inclined working face |
| 10/09/2013 | CN103343537A Drilling machine of high-pressure rotary-spraying anchor rod and construction method of high-pressure rotary-spraying anchor rod |
| 10/09/2013 | CN102493821B Support method for high stress roadway coal-rock mass |
| 10/08/2013 | US8550751 Non-tensionable cable bolt apparatus and related method |
| 10/08/2013 | CA2642556C Improved earth anchor |
| 10/02/2013 | CN203223229U Coal mine roadway uniformly distributing grouting structure |
| 10/02/2013 | CN203223228U Coal mine roadway supporting and reinforcing structure |
| 10/02/2013 | CN103339082A Two-component mortar composition and its use |
| 10/02/2013 | CN103334779A Method for constructing isotropic surrounding rock soft rock roadway support |
| 10/02/2013 | CN102392457B Friction type resin anchor rod and installation method thereof |
| 09/25/2013 | EP2640675A1 Two-component mortar composition and its use |
| 09/25/2013 | CN203214080U Hole packer of grouting anchor rod |
| 09/25/2013 | CN203214079U Lifting rod for anchor rod recycling machines |
| 09/25/2013 | CN203214078U Small-sized anchor rod recycling device |
| 09/25/2013 | CN103321663A Roadway baseboard anchoring and top pouring type pre-stressed anchor cable strengthening device and construction method |
| 09/25/2013 | CN103321653A Method of treating lining after collapse of underground cavern crown |
| 09/25/2013 | CN103321220A Stretching method and device of prestressed anchor cable |
| 09/25/2013 | CN102278128B High-stress poor rock roadway supporting process |
| 09/18/2013 | CN203201577U Bendable rebar ladder beam applicable to roadway coal sidewall |
| 09/18/2013 | CN203201466U Rotary supporting mechanism of omnibearing multi-angle rotary type anchor drill carriage |
| 09/18/2013 | CN203201465U Omnibearing multi-angle rotary type anchor drill carriage |
| 09/18/2013 | CN203201461U Pneumatic anchor drilling machine for coal mine |
| 09/18/2013 | CN103306695A Spiral fin grouting anchor cable assembly with adjustable angle |
| 09/18/2013 | CN103306687A Construction method for deformation control via horizontal whirling jet grouting of long cantilever in soft-rock tunnel |
| 09/18/2013 | CN103306683A Construction method for comprehensive precipitation in hole in deep-buried tunnel excavation process |
| 09/18/2013 | CN102518451B Construction method of shotcrete support for water contained loess geological tunnel |
| 09/18/2013 | CN102364053B Heading-anchoring machine |
| 09/18/2013 | CN102220866B Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| 09/12/2013 | US20130236251 Rock bolt sealing system |
| 09/12/2013 | US20130233904 Spad setting tool |
| 09/12/2013 | DE102012203696A1 Gesteinsanker Rock bolts |
| 09/11/2013 | CN203189049U Anchorage top-pouring pre-stressed anchor cable strengthening device of mine roadway bottom plate |
| 09/11/2013 | CN103291328A Swelling rock roadway bottom plate treatment method |
| 09/11/2013 | CN103291326A Reconstructed bearing layer control technology of large-deformation roadway surrounding rock |
| 09/04/2013 | EP2633158A1 Filling of partitioned film packages for anchoring systems for mines |
| 09/04/2013 | CN203175586U 锚杆回收装置 Bolt recovery |
| 09/04/2013 | CN203175585U Novel anchor rod installation tool |
| 09/04/2013 | CN203175397U Integrated front-back sliding mechanism for multifunctional hydraulic anchor rod drill carriage |
| 09/04/2013 | CN203175396U Multifunctional hydraulic anchor rod drill carriage |
| 09/04/2013 | CN103277124A Anchor-rod-combined supporting method for high-sulfur crush rock mine |
| 09/04/2013 | CN103277123A Movable sliding seat mechanism for mounting onboard drilling machines |
| 09/04/2013 | CN103277122A Method for drilling anchor rod hole and anchoring anchor rod in broken roof |
| 09/04/2013 | CN102128039B Drilling rod belt-feeding type prestress anchor rod and use method thereof |
| 08/28/2013 | CN203161267U Positioning device for construction of prefabricated anchor rods in underground engineer model test |
| 08/28/2013 | CN103266904A Anchor bolt support device and heading machine with same |
| 08/28/2013 | CN102261256B Positioning device and method for system anchor rod application during underground engineering model test |
| 08/27/2013 | CA2566245C Continuous chamber environment resistant retaining wall block and methods of use thereof |
| 08/21/2013 | CN203146978U Hydraulic control system and roof bolter |
| 08/21/2013 | CN203146715U Novel torque amplifier of roofbolter |
| 08/21/2013 | CN203145972U Pneumatic anchor rod drilling rig |
| 08/21/2013 | CN203145971U Anchor cable tensioning device |
| 08/15/2013 | US20130209192 Tensionable threaded rebar bolt |