| Patents for E21D 9 - Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries (7,097) |
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| 01/23/2013 | CN202690068U Out-of-trouble system for screw conveyor of two-meter-diameter shield machine |
| 01/23/2013 | CN202690067U System for helping cutterhead of shield tunneling machine with diameter of 2 meters out of jam |
| 01/23/2013 | CN202690066U Drag reduction pulp cartridge filling mechanism of overlong jacking pipe |
| 01/23/2013 | CN202690065U Reinforced structure formed through advanced processing of weathered ball by percussion drill within shield tunneling range |
| 01/23/2013 | CN202690064U Center rotating joint of shield machine |
| 01/23/2013 | CN202690054U Hinged amplitude variable moveable arm mechanism for mining grooving machine |
| 01/23/2013 | CN202690045U Comprehensive mechanized rock drift heading machine |
| 01/23/2013 | CN202688907U Bridge and tunnel integration rock-fall preventing flexible steel-mesh open-cut tunnel structure |
| 01/23/2013 | CN102892975A Drilling apparatus with shutter |
| 01/23/2013 | CN102889087A Construction method of single-hole dual-layer cable tunnel |
| 01/23/2013 | CN102889086A Full-section tunneling machine for changing connecting radius between cutter head and rotary support |
| 01/23/2013 | CN102889085A Tunneling construction method for shield tunneling machine |
| 01/23/2013 | CN102168565B Soil reinforcing method for realizing normal-pressure cabin opening of shield machine |
| 01/23/2013 | CN101975066B Coal-rock drift quick tunnelling method |
| 01/23/2013 | CN101725360B Butt joint method of shield machine |
| 01/17/2013 | DE102011107697A1 Vortriebs- und Gewinnungsmaschine Heading and extraction machine |
| 01/16/2013 | CN202673301U Grout, liquid and gas construction switching device of three-arm hydraulic drill jumbo |
| 01/16/2013 | CN202673297U Improved shield machine shield tail sealing grease injection system |
| 01/16/2013 | CN202673296U Rectangular heading machine utilizing swing cutting method |
| 01/16/2013 | CN102877853A TBM (tunnel boring machine) bidirectional rotary tapping cutter head and production process thereof |
| 01/16/2013 | CN102877852A Hole opening structure for shield machine to enter hole |
| 01/16/2013 | CN102877851A Arc-shaped bottom stepping passing method of open-type hard rock heading machine in urban subway construction |
| 01/16/2013 | CN102877850A Construction method of weak structural surface displacement of grotto surrounding rocks of underground power plant |
| 01/16/2013 | CN102174893B Testing method for laying ballastless tracks in early stage before overall completion of super long tunnel |
| 01/16/2013 | CN102162363B Adjustable mini underground pipeline tunneling cutter head |
| 01/16/2013 | CN102071949B Pile type composite tube roofing cover arch structure for tunnel portal and construction method thereof |
| 01/16/2013 | CN102071948B Door type composite pipe roof umbrella arch structure for tunnel opening and construction method thereof |
| 01/15/2013 | CA2684426C Method of modifying drilling pattern, rock drilling rig, and software product |
| 01/10/2013 | WO2013005392A1 Boring equipment |
| 01/10/2013 | US20130008723 Drilling apparatus with shutter |
| 01/09/2013 | EP2542917A1 Tunnel seismic while drilling signal processing and acquisition method |
| 01/09/2013 | CN202659248U Self-propelled tunnel drilling jumbo |
| 01/09/2013 | CN202659245U Automatic rectification system for shield tunneling machine |
| 01/09/2013 | CN202659244U Tunnel boring machine cutterhead |
| 01/09/2013 | CN202659243U Cutter disc structure of soft soil shield machine |
| 01/09/2013 | CN202659242U Rotary joint of shield machine |
| 01/09/2013 | CN202659241U Movable shield scraper |
| 01/09/2013 | CN202659240U Novel subway cross-river medium shield tunnel |
| 01/09/2013 | CN202659239U Replaceable wear-resisting window device in shield screw machine barrel hole |
| 01/09/2013 | CN202659238U Bolted shield tunneling starting bracket |
| 01/09/2013 | CN102865085A Method for designing underground construction forked cavern junction |
| 01/09/2013 | CN102865084A Expanding excavation method of underground tunnel from fracture surface of double-track tunnel to ultra-large fracture surface of triple-track tunnel |
| 01/09/2013 | CN102865083A Working well free shield arrival engineering method and structure of existing basement structure |
| 01/09/2013 | CN102865082A Rectangular bend quick construction method of T-shaped laneway of mine |
| 01/09/2013 | CN102080554B Waterproof airbag for tunnel shield to enter the hole |
| 01/08/2013 | CA2662761C Method for drilling rock |
| 01/08/2013 | CA2566733C Process and device for building a tunnel immersed on a sub-sea soil |
| 01/02/2013 | CN202645872U Wind, light diesel and storage integrated off-network power supply system |
| 01/02/2013 | CN202645583U Muddy water shield stone breaking device |
| 01/02/2013 | CN202645582U Sealable fragment receiving hopper used for dual-mode full-section rock tunneling machine |
| 01/02/2013 | CN202645581U Spiral shaft capable of being dismounted rapidly in tunnel |
| 01/02/2013 | CN202645580U Tunnel boring machine for long-distance big-gradient inclined shaft |
| 01/02/2013 | CN202645579U Adjustable hard rock heading machine support frame |
| 01/02/2013 | CN202645578U Full-section rectangular hard-rock heading and anchoring integrated machine |
| 01/02/2013 | CN202645577U Double-circle spoke plate type cutter plate for earth pressure balancing shield machine |
| 01/02/2013 | CN202645576U Open shield sealing device |
| 01/02/2013 | CN202645575U Curtain liquefrozen reinforcement structure for replacing ventral brush in shield tunnel hole |
| 01/02/2013 | CN202645573U Slagging-off machine with dust control and removal function |
| 01/02/2013 | CN202645572U Slagging-off machine with slurry spraying manipulator and dust controlling and removing functions |
| 01/02/2013 | CN202645567U Rolling harrow material tumbling and charging high-efficient loader |
| 01/02/2013 | CN202645566U Rolling harrow-material loader |
| 01/02/2013 | CN102852527A Cutter disc and cutter improving method for accelerating shield excavation in dense sand layer |
| 01/02/2013 | CN102852526A Mortar stopping sealing device of shield tunneling machine and shield tunneling machine |
| 01/02/2013 | CN102852525A Underground tunnel enlarging and excavating method from small section of single-line tunnel to large section of double-line tunnel |
| 01/02/2013 | CN102155238B Exchangeable blade type center cutter for shield machine |
| 01/02/2013 | CN102155230B Tunnel curve segment lofting method based on circle coordinates |
| 01/02/2013 | CN102080558B Purification and exhaust method for road tunnel without air shaft |
| 01/02/2013 | CN102072450B Continuous illumination method for long-distance pipe-jacking construction |
| 01/02/2013 | CN101994513B Method for constructing tunnel by finishing full section curtain grouting from upper-half section |
| 01/02/2013 | CN101922293B Method for installing waterproof steel plate in construction of underground tunnel |
| 01/01/2013 | US8342776 Mine seal with adhesive |
| 12/27/2012 | DE102012219134A1 Method for discharging excavated material during tunnel driving in tunnel boring machine, involves arranging aperture in discharging direction of another aperture, where former aperture is opened and latter aperture is closed in tunneling |
| 12/26/2012 | CN202628109U Portal structure of shield tunnel |
| 12/26/2012 | CN202628108U Caisson structure used as tunnel mouth segment |
| 12/26/2012 | CN202628107U Water injection device for earth pressure balance pipe-jacking machine |
| 12/26/2012 | CN202628106U Conversion module for cutter disk of shield tunneling machine |
| 12/26/2012 | CN202628105U Automatic programming machine (APM) track structure applicable to circular section of shield tunnel |
| 12/26/2012 | CN202628104U Station-passing counterforce device for shield machine |
| 12/26/2012 | CN202628103U Rectangular tunnel surrounding rock forming machine |
| 12/26/2012 | CN202628101U Anchoring guider inside hole |
| 12/26/2012 | CN102839979A Method for rebuilding ancient well site in controllable archaeology model test field |
| 12/26/2012 | CN102839978A Tapered cutter of shield tunneling machine |
| 12/26/2012 | CN102155234B Excavation construction method for unsymmetrical small-space tunnel |
| 12/26/2012 | CN102128035B Construction method of bilateral biased small-clear distance tunnel |
| 12/19/2012 | CN202611767U Remote tunnel boring machine monitoring system based on GPRS (general packet radio service) |
| 12/19/2012 | CN202611711U Tunnel longitudinal evacuation structure with fire fighting vehicle channel |
| 12/19/2012 | CN202611710U Program control arch drilling machine guide frame |
| 12/19/2012 | CN202611709U Assembled six-cutterhead of rectangular earth pressure balanced roadheader |
| 12/19/2012 | CN202611708U Passive hinged tail shield assistant escape device |
| 12/19/2012 | CN202611707U Car slipping prevention device for storage battery car for shield construction |
| 12/19/2012 | CN202611630U Long-distance drill stem positioning device for arc-shaped drilling machine |
| 12/19/2012 | CN202610830U Bracket type material-blocking wall and umbrella-shaped roof |
| 12/19/2012 | CN102829753A Three-dimensional attitude measurement device of tunnel boring construction guidance system |
| 12/19/2012 | CN102828755A Device and method for correcting rotation of circular shield machine |
| 12/19/2012 | CN102071940B Construction method for mine shaft through multilayer goaf |
| 12/19/2012 | CN102042019B Two-stair five-step excavation construction method for shallow-buried large-span soft plastic clay tunnel |
| 12/18/2012 | CA2670750C Designing drilling pattern for excavating rock cavern |
| 12/18/2012 | CA2612983C Arrangement for positioning rock drilling rig on drilling site |
| 12/13/2012 | US20120313422 Method and device for working rock |
| 12/12/2012 | CN202596734U Automatic deviation correcting system for shield machine |