| 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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| 08/26/2009 | CN201297175Y Soil pressure balancing-type shield construction process simulating tester |
| 08/26/2009 | CN100532907C Fluid piping arrangement and shield digger using same |
| 08/26/2009 | CN100532787C Cutter head for cutter head changeable tunnelling machine |
| 08/26/2009 | CN100532786C Digging method for shallow underground hole |
| 08/26/2009 | CN100532738C Continuous realizing method of underground engineering |
| 08/20/2009 | WO2009101038A1 Tail seals |
| 08/20/2009 | WO2009100469A1 Heading work machine having drill head made of disk tools |
| 08/20/2009 | CA2715052A1 Tail seals |
| 08/20/2009 | CA2714975A1 Heading machine having cutting unit made of disc tools |
| 08/19/2009 | EP1467030B1 Underground pipe and cable gallery which can be inspected |
| 08/19/2009 | CN201294691Y Power box stent for development machine |
| 08/19/2009 | CN201294059Y Guider for digging model shield machine |
| 08/19/2009 | CN201292852Y Coal mine tunnel structure |
| 08/19/2009 | CN101512102A Method for drilling rock |
| 08/19/2009 | CN101509382A Tunnel surveying method |
| 08/19/2009 | CN101509381A Composite shield structure suitable for bad ground construction |
| 08/19/2009 | CN100529329C Socket shield machine construction method |
| 08/13/2009 | WO2009097646A1 A method and an apparatus for mining a material in an underground environment |
| 08/12/2009 | CN201288568Y Shield cutter head hydraulic system employing motor series and parallel hybrid driving |
| 08/12/2009 | CN201288567Y Shield cutter head hydraulic control system for expanding speed regulating range |
| 08/12/2009 | CN201288566Y Energy-saving shield advance hydraulic system employing zone control |
| 08/12/2009 | CN101503960A Multi-pump combined driving shield-tunneling blade disc hydraulic system |
| 08/12/2009 | CN100526792C System and method of chamber destruction of bomb |
| 08/05/2009 | CN201284652Y Tunnel structure shared by construction traffic and flood draining passage |
| 08/05/2009 | CN101498221A City underground engineering construction safety risk dynamic control method |
| 08/05/2009 | CN100523435C Method to install underground pipe casing |
| 07/29/2009 | CN100519989C Combined balance shield machine |
| 07/28/2009 | CA2484394C Rock cutting machine |
| 07/23/2009 | WO2009091041A1 Steel pipe for reinforcing foundation, method of reinforcing foundation using the same, and method of reinforcing structure |
| 07/23/2009 | DE202009004329U1 Tunnelschirm aus bodenähnlichen Ersatzbaustoffen Tunnel shield from soil-like replacement construction materials |
| 07/22/2009 | CN201277043Y Multifunctional bottom loader |
| 07/22/2009 | CN100516462C Deviation correcting pressure weight method for side rolling in double circle shield tunnel construction |
| 07/15/2009 | CN201273192Y Drilling-milling type rail roadheader |
| 07/08/2009 | CN101476468A Test method and device for wood slag discharge condition |
| 07/08/2009 | CN101476467A Pipe blocking device and pipe connection apparatus employing the same |
| 07/08/2009 | CN101476466A Giant heavy laver land slide pre-stress anchor cable antiskid tunnel construction method and novel prevention structure |
| 07/08/2009 | CN100510320C Tunneling method |
| 07/07/2009 | CA2526854C Method and system for mining hydrocarbon-containing materials |
| 07/02/2009 | US20090167008 Travel unit for mobile machines |
| 07/01/2009 | CN100507210C Double-layer structured round tunnel with deformation control device |
| 06/30/2009 | CA2297456C Method and apparatus for feeding a tunnel roof support system from the roof shield of a tbm |
| 06/25/2009 | WO2009076710A1 An apparatus for forming an underground tunnel |
| 06/25/2009 | WO2008078002A9 Designing drilling pattern for excavating rock cavern |
| 06/25/2009 | CA2708373A1 An apparatus for forming an underground tunnel |
| 06/24/2009 | CN101463725A Tunneling construction method of fully mechanized tunnelling machine for weak-cementation eugeogenous rock dip drift |
| 06/24/2009 | CN101463724A Construction method for connection passage by double-row hole horizontal freezing method |
| 06/24/2009 | CN100504030C PMS sludge preparation method and its application in construction of sludge balance shield and pipe-jacking |
| 06/24/2009 | CN100504029C Electronic laser target of tunnel digging construction guiding system |
| 06/17/2009 | CN201258745Y Rock bed cutter |
| 06/17/2009 | CN201258744Y Tunneling shield attitude measuring system |
| 06/17/2009 | CN101457647A Internal and external bit angle asymmetric transition disk type hobbing cutter ring |
| 06/17/2009 | CN101457646A Balancing arrangement method on cutterhead for positive hobbing cutter and transition hobbing cutter |
| 06/17/2009 | CN100501124C Construction method for tunnel contact passage in shield section of underground railway |
| 06/17/2009 | CN100501123C Ground deformation control method for going through soft earth layer by double circular shielding |
| 06/10/2009 | EP2066870A1 Mobile enclosure comprising advancing units |
| 06/10/2009 | CN201254991Y Prior knife for shield machine |
| 06/10/2009 | CN101451437A Cutter for metro shield |
| 06/03/2009 | EP2064414A1 Method for drilling rock |
| 06/03/2009 | CN201250657Y Multifunctional tunnel digging machine |
| 06/02/2009 | CA2405096C Rock drilling rig |
| 05/28/2009 | US20090136299 Tunnel supported on bearing blocks |
| 05/27/2009 | CN201246168Y Double-shaft milling rod retainer for underground side direction slot forming |
| 05/27/2009 | CN201246167Y Power device for underground side direction slot forming double-milling rod apparatus |
| 05/27/2009 | CN101440710A Shield machine roller cutter back mounting type self-positioning fixing device |
| 05/27/2009 | CN101440709A Cutter head center dreg stirring device of soil pressure balance shield machine |
| 05/27/2009 | CN101440708A PBA shallow buried underground excavating close range large section three-hole separated island type structure construction method |
| 05/27/2009 | CN100491697C Method for autocontrolling for excavation direction of underground excavator using virtual track |
| 05/27/2009 | CN100491696C Method and device for structuring tunnel by propulsion of underground box |
| 05/27/2009 | CN100491695C Tunnel construction method |
| 05/27/2009 | CN100491694C Dismountable type shield cutter head drive unit inside machine and its dismounting and replacing method |
| 05/27/2009 | CN100491693C Construction method for underground structure |
| 05/20/2009 | CN201241711Y Hard rock development machine cutter head panel with restoring and strengthening functions |
| 05/20/2009 | CN201241710Y Sand pebble formation shield cutter head |
| 05/20/2009 | CN201241709Y Scraper for shield machine |
| 05/20/2009 | CN201241708Y Hob cutter for shield machine |
| 05/20/2009 | CN201241707Y Tunnel upward floating model trial apparatus |
| 05/20/2009 | CN201241706Y Waste water cycling and reutilizing apparatus of open type tunnel boring machine |
| 05/20/2009 | CN201241615Y Buffering oil pad structure of hydraulic rock drill |
| 05/20/2009 | CN101435334A In-and-out hole segment pipe sheet connecting structure of shield method and construction method thereof |
| 05/20/2009 | CN101435333A Optimized arch rapid determining method of tunnel and underground arch chamber |
| 05/20/2009 | CN101435332A Construction method for in-situ turnaround of shield machine |
| 05/20/2009 | CN101434476A Sealing plugging material and use thereof in shield break-in and break-out construction |
| 05/20/2009 | CN100489268C Shield digging device |
| 05/13/2009 | CN101429869A Double-bending tunnel |
| 05/13/2009 | CN100487225C Cutter drive device of eccentric multi-axial type tunnelling machine |
| 05/13/2009 | CN100487224C Rapid-construction method for rapid change of small-section into large-section tunnel |
| 05/13/2009 | CN100487223C Eccentric multi-axial multi-cutter type tunnelling machine |
| 05/12/2009 | US7530765 Structure of intermediate wall of three arch excavated tunnel and method for constructing the same |
| 05/12/2009 | CA2408970C Cutting tool and method of using same |
| 05/07/2009 | WO2009057852A1 High-speed railway tunnel hood for reducing micro-pressure waves |
| 05/07/2009 | WO2009057367A1 Method of preparing air foam stabilizing liquid and method of air foam drilling work |
| 05/06/2009 | EP1461562B1 Method for making a sealed tubular joint with plastic expansion |
| 05/06/2009 | CN100485162C Shield earth pressure balance system and control method for reutilizing inertial energy |
| 04/29/2009 | CN201228553Y Tunnel durable lining structure at active fault section |
| 04/29/2009 | CN101418692A Complete-section tunnel boring machine disk cutter management method |
| 04/29/2009 | CN101418691A Inner and outer side bit angle asymmetric disk cutter ring |
| 04/23/2009 | DE102004048641B4 Schachtbohranlage mit Hubeinrichtung Shaft drilling rig with a lifting device |
| 04/22/2009 | CN201225158Y Knife-enlarging fixed structure of shield excavation machine |
| 04/22/2009 | CN101413566A High power third-level planetary reduction gear for soil pressure balance shield machine |
| 04/16/2009 | WO2009004343A3 Excavator vehicle |