Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21D - Shafts; Tunnels; Galleries; Large underground chambers › E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection
Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377)
10/2012
10/24/2012CN102748046A Double-layer anchor plate
10/24/2012CN102155248B Method for supporting laneway below coal pillar
10/23/2012CA2533999C Improved cable bolt
10/17/2012CN202493280U Omega-shaped high-strength steel strip
10/17/2012CN102733846A Oval single-open full-automatic disaster blocking-preventing device used in mine roadway
10/17/2012CN102733845A Full-automatic disaster block prevention device with double-open tablet for mine
10/17/2012CN102733836A Roadway support method for fully mechanized caving mining of weak extra-thick coal seam
10/17/2012CN102733835A Watery distension anchor rod, matching connecting joint and connection method of watery distension anchor rod
10/17/2012CN102733832A Support method for extra-thick broken coal seam employing nest anchored ropes
10/17/2012CN102174812B Active self-adaptative constant-resistance lengthener for prestress anchor cable
10/16/2012US8286736 Drill bit, a drill rod and a self drilling roof bolt
10/11/2012WO2012138825A1 Low profile cable bolt heads
10/11/2012WO2012083342A9 Rock bolt
10/11/2012WO2011157850A3 Improved tension anchor made of fiber-reinforced plastic material
10/10/2012EP2507042A1 Method and plant for producing a fiberglass profile to be used as reinforcing element for strengthening an excavation wall
10/10/2012CN202482859U Expansion type anchor bolt head
10/10/2012CN1791734B Controlled expansion of rock bolt
10/10/2012CN102720515A Fiber bragg grating prestress measurement anchor rod and application method thereof
10/09/2012US8282318 Roof bolt anchor with camming element
10/04/2012WO2012012392A3 Anchoring device
10/04/2012DE102011006455A1 Befestigungs-Anker sowie Befestigungs-Anker-Anordnung Mounting anchors and fastening anchor assembly
10/03/2012CN202467875U Mining anchor pole supporting ladder beam
10/03/2012CN202467874U Anchor pole supporting ladder beam without welding structure
10/03/2012CN102712145A Method and plant for producing a fiberglass profile to be used as reinforcing element for strengthening an excavation wall
10/03/2012CN102704972A Prestress measuring anchor rod and using method
10/03/2012CN102704971A Grouting and Grouting-stopping anchor cable inside hole
10/03/2012CN102704970A Pre-stressed anchor rod for underground engineering model test and operation method for pre-stressed anchor rod
10/03/2012CN102704969A Recoverable anchor rod for drilling, anchoring and grouting and supporting method thereof
10/03/2012CN102704968A Structure and method for preventing large deformation slippage of lateral wall of high stress tunnel
10/03/2012CN102704967A A structure and method for preventing collapse of chamber roof with crossed big sections
10/03/2012CN102704965A Method for preventing tunnel top plate collapse risk caused by severe mining
10/03/2012CN102704950A Support method used in passing water guide fracture structure in mine exploration
10/02/2012US8277149 Tensionable cable bolt with crimped shaft
10/02/2012US8277148 Re-tensionable cable bolt apparatus and related method
09/2012
09/27/2012WO2012126042A1 Inflatable friction bolt
09/27/2012DE102011014880A1 Alpinanker zur Verankerung von Gewindestäben im Erdboden oder Gestein Alpine anchor for anchoring threaded rods in the soil or rock
09/26/2012EP2503097A2 Adhesive packaging and use of same with an anchoring element
09/26/2012EP2503096A2 Rock bolt
09/26/2012CN202451190U Anchor rope capable of being standardly installed
09/26/2012CN202451189U Mining simple composite pallet
09/26/2012CN202451188U Feet locking anchor rod
09/26/2012CN202451187U Autocontrol hollow slip casting anchor rod
09/26/2012CN202451186U Anchor rod tail portion protection cover
09/26/2012CN202451185U High-strength light hollow anchor rod
09/26/2012CN202451184U Special-shaped section laneway anchor beam supporting of half-edge coal seam
09/26/2012CN202451165U Strengthening device for installing old tunnel electrification lifting column
09/26/2012CN202450523U Hollow self-drilling anchor rod support structure
09/26/2012CN102691514A Multistage sectional grouting-free self-expansion type anchoring rod
09/26/2012CN102691513A High-strength metal pressure-yielding anchor rod with headed tail
09/25/2012CA2609737C Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material
09/23/2012CA2772449A1 Adhesive package and use thereof with an anchoring element
09/21/2012CA2771661A1 Rock anchor bolt
09/20/2012DE102011001271A1 Annular retainer for securing anchor rod on mortar cartridge in borehole, has outwardly and/or inwardly projecting resilient retaining elements to hold anchor rod in bore hole
09/19/2012CN202442684U Pressure anchor roof fall early warning device for mine
09/19/2012CN202441435U Explosion-proof water barrier hanging device
09/19/2012CN202441404U Anchor bolt support flexible locking structure
09/19/2012CN202441403U High-pressure water self-drilling grouting anchor rod for mine
09/19/2012CN202441402U Telescopic constant force yield anchor bolt for dynamic pressure soft rock roadway
09/19/2012CN202441401U High-tensile slusher steel wire rope hanging device
09/19/2012CN202441400U Double-plate rock bolt
09/19/2012CN102678149A Device for visually detecting anchor rod
09/19/2012CN102678148A Novel high-strength constant-resistance large deformation anchor rod and using method thereof
09/19/2012CN102678147A High-strength, constant-resistance extender for anchorage cables and usage thereof
09/19/2012CN102678146A Quickly mounted efficient energy-absorbing mining anchor rod
09/19/2012CN102678145A Efficient novel construction method for resin anchor rod
09/19/2012CN102678142A Multi-directional inclined combination type anchoring system for horizontal lamellar surrounding rock of tunnel and mounting method thereof
09/19/2012CN102678134A Collapse and sink intrusion limit construction method for treating wind accumulated sand loess tunnel through stride shed pipe
09/13/2012US20120230774 Sliding anchor
09/13/2012DE102011012955A1 Anker-Befestigungselement Anchor fastener
09/13/2012DE102011005361A1 Gleitanker Sliding anchor
09/12/2012EP2497901A2 Sliding anchor
09/12/2012EP2496786A2 Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor
09/12/2012CN202431287U Combined telescopic anchor rod
09/12/2012CN102661169A Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars
09/10/2012CA2764585A1 Sliding anchor
09/05/2012CN202417557U Resistance increasing and yielding large-deformation anchor rod
09/05/2012CN202417556U Progressive yielding combined type extendable anchor rod
09/05/2012CN202417555U Left-hand turning anchor rod
09/05/2012CN202417554U Integral grouting and venting anchor rod
09/05/2012CN202417553U Device for drawing anchor rod
09/05/2012CN202417552U Looseness-prevention self-locking anchor rod for mine
09/05/2012CN202416312U Pre-blastable anchor rod with integration of drilling, injecting and anchoring
09/05/2012CN102654059A One-piece type yielding anchor rod system
08/2012
08/30/2012WO2012113976A1 Rock bolt
08/30/2012US20120219365 Rock Bolt
08/29/2012CN102650212A Construction method for protecting partition wall in double-arch tunnel through temporary support of middle pilot tunnel
08/28/2012US8251617 Rock anchor cable
08/23/2012WO2012029012A4 A bearing plate assembly for a rock anchor
08/23/2012WO2011103937A3 Reinforcing and/or anchoring screw
08/22/2012CN202391441U Yielding anchor rod
08/22/2012CN202391440U Anchoring device used for bamboo anchor rod
08/22/2012CN202390832U Anchor rod head with guiding device
08/22/2012CN102644470A General energy-saving quick anchoring method and general energy-saving quick anchor rod
08/22/2012CN101839143B Anchor rod
08/21/2012CA2747756C Yieldable cone bolt and method of manufacturing same
08/16/2012DE102011004023A1 Gesteinsacker Rock Sacker
08/15/2012EP2487328A2 Rock bolt
08/15/2012EP1664474B1 Drilling apparatus, method, and system
08/15/2012CN202381110U Long anchor rod pre-supporting device applied in unstable stope roof
08/15/2012CN202381109U Self-drilling rock bolt
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