| 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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| 08/14/2013 | CN103244138A Design method of slidingly-supported disc-shaped hob of heading machine |
| 08/14/2013 | CN103244137A Synchronous servo control simulation device of cutter disc driving motor of earth pressure balance shield |
| 08/14/2013 | CN103244136A Shield tunneling machine drive box and production method thereof |
| 08/14/2013 | CN103244135A Construction method for manufacturing mud film in high-permeability stratum |
| 08/14/2013 | CN103244134A Anti-floating ballasting method for shield tunnel under negative earthing condition |
| 08/14/2013 | CN103244133A Coal measure strata tunnel milling digging and blasting combined construction method |
| 08/14/2013 | CN103244132A Construction method for crossing houses by aid of shield tunneling machine in sandy soil and slurry injecting system |
| 08/14/2013 | CN103244131A Annular beam rock drilling device of tunnel boring machine |
| 08/14/2013 | CN103244130A Quick excavation and expanding construction method of herringbone tunnel section |
| 08/14/2013 | CN103244129A Construction method for three-dimensional intersection concave-convex fulcrums |
| 08/14/2013 | CN103244128A Method for constructing large-section karst tunnels through double sidewall pilot tunnel and reservation core soil methods |
| 08/14/2013 | CN103244127A Method for quickening construction of multiple-arch tunnel |
| 08/14/2013 | CN103244126A Construction method for preventing retreat of pipe pushing machine and pipe joints |
| 08/14/2013 | CN102392652B Method for removing mud cake in soil bin or muddy water chamber of shield machine and shield machine |
| 08/13/2013 | CA2456303C Continuous method of realization of underground tunnels including peripheral perforations |
| 08/08/2013 | US20130200680 Excavation system using a water jet, and excavation method using the same |
| 08/07/2013 | CN203114295U Roadway for transporting underground ore |
| 08/07/2013 | CN203114294U Horizontal broken pipe safe treatment device |
| 08/07/2013 | CN203114293U Jacking pipe heading machine hydraulic cylinder synchronization heading system |
| 08/07/2013 | CN203114292U Up-and-down separation type underground excavation station construction passageway structure provided with muck transporting equipment |
| 08/07/2013 | CN203113393U Excavating type continuous loading machine |
| 08/07/2013 | CN103233747A Pre-drilling launcher |
| 08/07/2013 | CN103233746A Multifunctional underground roadway tunneling locomotive |
| 08/07/2013 | CN103233745A Planetary cutterheads for heading machine |
| 08/07/2013 | CN103233744A Design method for support ribs of ballast slipping plate of cutter head of full face rock tunnel boring machine |
| 08/07/2013 | CN103233743A Combined shield operation system |
| 08/07/2013 | CN103233742A Treatment measure of bad geological section for long distance pipeline coal conveying |
| 08/07/2013 | CN103233741A Method for quantitatively evaluating surrounding rock stability of ultra-large underground cavern group in construction period |
| 08/01/2013 | WO2013111359A1 Bit exchange method and bit exchange device for shield tunneling machine |
| 08/01/2013 | US20130193744 Apparatus for forming an underground tunnel |
| 07/31/2013 | CN203097936U Rotation type pedestrian path for shield tunneling machine |
| 07/31/2013 | CN203097902U Construction structure for treating geological disasters of mud gushing and water burst of karst tunnel |
| 07/31/2013 | CN203097901U Grade crossing structure of cable tunnel |
| 07/31/2013 | CN203097900U Municipal grade separation tunnel |
| 07/31/2013 | CN203097899U Heading and transporting device of heading machine in pipeline excavating project |
| 07/31/2013 | CN203097898U Full section tunneling machine for changing connection radius between cutter head and rotatory support thereof |
| 07/31/2013 | CN203097897U Shield for shield tunneling machine |
| 07/31/2013 | CN203097896U Separated type large-section multi-cavern underpass existing building sedimentation controlling structure |
| 07/31/2013 | CN203093734U Novel excavating type loader |
| 07/31/2013 | CN103225512A Construction method for making prestressed back for box-culvert jacking |
| 07/31/2013 | CN103225511A Assembled type pipe jacking rear seat of precast concrete |
| 07/31/2013 | CN103225510A Construction method of tunnel construction risk map for TBM (tunnel boring machine) |
| 07/31/2013 | CN102418530B Roller guide rail station-passing construction method of whole shield machine |
| 07/31/2013 | CN102383807B Longitudinal evacuation structure of underground tunnel and underground tunnel |
| 07/31/2013 | CN102268997B Anti-tipping mounting method of inner cutter of disc cutter on cutter head of full-face tunnel boring machine |
| 07/31/2013 | CN102168566B Method for energy-saving assembly of transition disc cutter |
| 07/25/2013 | WO2013040613A3 Shield driving device |
| 07/24/2013 | CN203082217U Emergency sealing device for shield water bursting accident emergency rescuing |
| 07/24/2013 | CN203081459U Tunnel construction trolley |
| 07/24/2013 | CN203081458U Breaking device for heading machine gantry opening |
| 07/24/2013 | CN203081457U Shield machine disc cutter convenient to replace |
| 07/24/2013 | CN203081456U Enhanced shield tail seal brush |
| 07/24/2013 | CN203081455U Screw conveyer blade for shield tunneling machine |
| 07/24/2013 | CN203081454U Shield machine tail structure facilitating replacement of shield tail brushes |
| 07/24/2013 | CN203081447U Crawler loader and rear axle swinging system thereof |
| 07/24/2013 | CN203081446U Raking and crushing and cleaning loader |
| 07/24/2013 | CN203080424U Limiting device for jacking of frame-shaped bridge |
| 07/24/2013 | CN203079170U Telescopic transition belt conveyor capable of rotating by any angle |
| 07/24/2013 | CN103216243A Advance drill sealing device |
| 07/24/2013 | CN103216242A Anti-loose structure of cutter for shield tunneling machine |
| 07/24/2013 | CN102562081B Shield tail sealing device for shield machine |
| 07/24/2013 | CN102296962B Adverse slope excavating construction method of large-section tunnel in water-rich tunnel section |
| 07/17/2013 | CN203066985U Tunnel interchange and ventilation running water type Nanguo pear nature fresh-keeping storehouse |
| 07/17/2013 | CN203066984U Copy cutter and shield tunneling machine |
| 07/17/2013 | CN203066983U Shield tunnel construction environment simulation system |
| 07/17/2013 | CN203066982U Lock-up control device for excavation ranging |
| 07/17/2013 | CN103206871A Shield tunneling machine circulating water cooling process |
| 07/17/2013 | CN103206221A Thrust arch-type open-cut tunnel structure with large span and heavy load |
| 07/17/2013 | CN103206220A Drilling device loaded on hard rock tunneling machine and hard rock tunneling method |
| 07/17/2013 | CN103206219A Holed excavation supporting structure for light and dark junction section of tunnel in bias pressure state and construction method |
| 07/17/2013 | CN103206218A Drilling and blasting device loaded on hard rock tunneling machine and hard rock tunneling method |
| 07/17/2013 | CN103206217A Deformation control method for positive benching tunneling method construction of high geostress soft rock section |
| 07/17/2013 | CN102322271B Tool pan back-loading type device for changing tool of slurry-balanced shield machine under normal pressure |
| 07/17/2013 | CN102155219B Comprehensive dredging machine |
| 07/16/2013 | CA2723432C Apparatus and method for monitoring tunnel boring efficiency |
| 07/11/2013 | WO2013050010A8 Device for monitoring the state of rotation of a disk cutter arrangement of a shield tunnel boring machine and disk cutter arrangement for a shield tunnel boring machine |
| 07/11/2013 | US20130174725 System for storing potential energy and method for producing such a system |
| 07/11/2013 | CA2764210A1 Cord (controled remote drilling) |
| 07/10/2013 | EP2611968A2 Method and apparatus for making an expanded base pier |
| 07/10/2013 | CN203050725U Gliding type four-iron-wheel driving crawler loader |
| 07/10/2013 | CN203050724U Closed type energy-saving shield spiral conveyor hydraulic system |
| 07/10/2013 | CN203050723U Variable frequency driving shield thrust hydraulic system |
| 07/10/2013 | CN203050722U Supporting boot for heading machine and heading machine |
| 07/10/2013 | CN203050721U Heading machine suitable for complex stratum |
| 07/10/2013 | CN203050720U Auxiliary slurry pressure maintaining system for earth pressure balance shield machine |
| 07/10/2013 | CN203050719U Tunnel arch springing circumferential high-pressure ejecting and reinforcing construction device |
| 07/10/2013 | CN203050718U Tunnel survey hole jacking device |
| 07/10/2013 | CN203050692U Drill loader |
| 07/10/2013 | CN203044375U Cleaning device of tool bit of shield tunneling machine |
| 07/10/2013 | CN103195440A Three-layer-structure subway double-line single-pipe circular tunnel |
| 07/10/2013 | CN103195439A Multifunctional working platform car for tunnel construction |
| 07/10/2013 | CN103195438A Heading machine and assistant walking device thereof |
| 07/10/2013 | CN103195437A Online testing device for hob blade string abrasion of heading machine |
| 07/10/2013 | CN103195436A Combined hinging device for shield tunneling machine |
| 07/10/2013 | CN103195435A Method for preventing shield penetration of building compact district from inducing ground subsidence |
| 07/10/2013 | CN103195434A Hydraulic impact hammer device added on hard rock heading machine and hard rock heading method |
| 07/10/2013 | CN103195433A Method for speedy drivage in large section coal road |
| 07/10/2013 | CN103195432A Weak surrounding rock, tunnel intersection and arc-shaped pilot tunnel construction method |
| 07/10/2013 | CN102536272B Duct piece carrying device for shield machine |
| 07/10/2013 | CN102288076B Method for controlling laneway floor heave through deep-hole section blasting |