| 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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| 10/14/1998 | EP0870902A2 Apparatus for the radial control of the cutters of a driving shield |
| 10/14/1998 | EP0870898A1 Method for injection treatment of a formation of little deformability and sleeve for use with the method |
| 10/13/1998 | US5822050 Direction finding system |
| 10/13/1998 | US5819859 Apparatus and method for detecting an underground structure |
| 09/29/1998 | US5813482 Earth boring system and apparatus |
| 09/15/1998 | US5808052 Use of cellulose mixed ethers as additives for earth pressure shields |
| 09/08/1998 | US5803665 Method and apparatus for continuous production of quick-setting foamed cement grout with selectively adjustable proportions |
| 09/08/1998 | US5803195 System, method and cutterhead for dry full-area drilling |
| 09/03/1998 | DE19722459C1 Chamber-widening equipment e.g for salt mine gallery or tunnel |
| 09/02/1998 | EP0861966A2 Apparatus and method for forming ducts and passageways |
| 08/25/1998 | CA2104844C Long hole chemical grout injector system |
| 08/04/1998 | US5788421 Hectorite slurry |
| 07/29/1998 | EP0855490A2 Drilling apparatus and downhole torque generator |
| 07/29/1998 | EP0855489A2 Earth displacement drill |
| 07/28/1998 | US5785135 Earth-boring bit having cutter with replaceable kerf ring with contoured inserts |
| 07/22/1998 | CA2227602A1 Earth displacement drill |
| 07/15/1998 | CN1187576A Piston-type shield and pipeline construction method thereof |
| 07/09/1998 | DE19700297A1 Tunnel boring machine |
| 06/30/1998 | CA2080828C Method and machine for excavating drifts, tunnels, stopes, caverns or the like |
| 06/24/1998 | CN2284860Y Hydraulic propelling tunnel extrusion moulding machine |
| 06/16/1998 | US5765925 Tunnel boring machine for hard ground and soft ground |
| 06/10/1998 | EP0846842A1 Hydrocolloids and hydrocolloid mixtures as additives for underground construction eg tunnels construction |
| 06/10/1998 | EP0846747A1 Process for preparation and use of gels as additives for mechanical shield driving |
| 06/10/1998 | EP0729555A4 Improved guided mole |
| 06/02/1998 | US5758760 Continuous haulage system |
| 06/02/1998 | US5758730 Method for removing an earth core out of a pipe laid in trench-less manner and go-devil for implementing the method |
| 05/28/1998 | DE19649108A1 Short front mining machine, especially for driving galleries along seam |
| 05/26/1998 | US5757504 Positional measurement projecting device and mounting structure therefor |
| 05/20/1998 | DE19708536C1 Screw conveyor |
| 05/13/1998 | EP0841467A1 Rock milling head |
| 05/13/1998 | EP0841466A1 Disc cutter structure |
| 05/12/1998 | US5749678 Device for driving a tunnel or drain pipe |
| 04/28/1998 | US5743676 Method and device for keeping outfall drainage in service during sewerage construction |
| 04/23/1998 | DE19745766A1 Sludge preparation station for tunnelling machine whose working tip consists of compressed sludge |
| 04/22/1998 | EP0836667A1 Locating a discrete in-ground boring device |
| 04/22/1998 | CN1179501A Construction method for supporting and excavating of plate inserting floor of soil based tunnel and its plate inserting machine |
| 04/15/1998 | EP0835984A2 Method to substitute the supporting liquid by compressed air in an hydro-shield |
| 04/09/1998 | WO1998014684A1 Earth-boring bit having cutter with replaceable kerf ring with contoured inserts |
| 03/19/1998 | WO1998011323A1 Tunnel boring machine |
| 03/19/1998 | WO1998011304A1 Tunnel digging machine |
| 03/19/1998 | DE19637218A1 Tunnel boring machine |
| 03/18/1998 | EP0829617A1 Shearing and casting device for making a slot in an underground formation |
| 03/12/1998 | WO1998010170A1 Tunnel excavation method and tunnel excavator |
| 03/04/1998 | EP0615571B1 Methods of manufacturing a hub for use in a cutter of a boring head. |
| 03/03/1998 | US5722800 Seal and its production method for the creation of load bearings, removable earth masses for the construction of underground structures such as cavity structures |
| 02/26/1998 | WO1998007961A1 Tunnelling process and device |
| 02/26/1998 | WO1998007960A1 Underground augering machine by electrical crushing, excavator, and its excavating method |
| 02/26/1998 | CA2263299A1 Tunnelling process and device |
| 02/25/1998 | EP0774043B1 Driving shield |
| 02/24/1998 | US5720354 Trenchless underground boring system with boring tool location |
| 02/19/1998 | DE19650330A1 Verfahren und Vorrichtung im Tunnelbau Method and apparatus for tunnel construction |
| 02/17/1998 | US5718295 Ground levelling blade |
| 01/29/1998 | WO1998003772A1 Spiral-shaped roller cutter and tunnel excavator cutter head provided with same |
| 01/29/1998 | WO1998003771A1 Excavation direction detecting apparatus and method |
| 01/29/1998 | WO1998003770A1 Cutting control process and device for detecting the depth of cut of kirving tools |
| 01/29/1998 | WO1998003769A1 A disc cutter |
| 01/29/1998 | WO1998003765A1 Improved disc cutter and excavation equipment |
| 01/29/1998 | DE19629849A1 Process for development of tunnel or shafts in unstable mountains |
| 01/29/1998 | CA2261003A1 A disc cutter |
| 01/28/1998 | EP0820421A2 Displaceable working apparatus with extensible boom |
| 01/22/1998 | DE19645650C1 Rock face cutting head |
| 01/13/1998 | US5707176 Earth discharge control system for small-diameter pipe propelling machine |
| 01/07/1998 | EP0816633A1 Tunnel excavator |
| 01/07/1998 | CN2272050Y Entry-driving machine along with tube |
| 01/07/1998 | CN1169766A Material and method for lubricating the metal surfaces of earth pressure tunnel boring machine |
| 12/18/1997 | DE19723101A1 Gripper feed module for rigging and advancing a tunnel boring machine |
| 12/18/1997 | DE19623375A1 Driving gallery machine for forced extension of downhole mining, tunnelling and channel construction |
| 12/17/1997 | EP0812979A1 Tunnel boring machine and method |
| 12/17/1997 | EP0812978A1 Shield excavating machine |
| 12/17/1997 | EP0812976A2 Underground apparatus for directional drilling without earth removal |
| 12/17/1997 | EP0657006A4 Guided mole. |
| 12/16/1997 | US5697676 Shield tunnel boring machine |
| 12/10/1997 | EP0811751A1 Cutting machine to precut a gallery vault |
| 11/27/1997 | DE19620499A1 Tunnelling machine with swinging cutter head |
| 11/20/1997 | DE19619532A1 Method for producing accessible tunnel |
| 11/19/1997 | EP0807203A1 Continuous control system for a mining or tunnelling machine |
| 11/13/1997 | DE19618404A1 Identification of cross section in inative mine workings |
| 11/12/1997 | CN1164640A Guide beam direction setting apparatus |
| 10/30/1997 | DE19617199A1 Station-formation method in Tubbing-lined railway tunnel |
| 10/28/1997 | CA2024423C Plant for digging and shoring up the walls of tunnels during excavation |
| 10/22/1997 | EP0646216B1 Stabilizing compositions and methods for stabilizing subterranean formations |
| 10/14/1997 | US5676491 Buried pipe laying method |
| 10/09/1997 | WO1997037105A1 Partial cutting machine |
| 10/09/1997 | CA2250766A1 Selective cut heading machine |
| 10/02/1997 | WO1997036085A1 Displacement machine |
| 10/02/1997 | DE19642093C1 Replacing support fluid for work face with compressed air |
| 10/02/1997 | DE19616702A1 Supply and disposal unit with multi-component resin |
| 09/30/1997 | CA2141021C Levelling rail |
| 09/25/1997 | DE19611180A1 Flared tunnel end for train tunnels |
| 09/24/1997 | EP0797073A2 Guide beam direction setting apparatus |
| 09/24/1997 | EP0796387A1 Material and method for lubricating the metal surfaces of an earth-pressure tunnel boring machine |
| 09/23/1997 | CA2097154C Shielding apparatus |
| 09/18/1997 | DE19621933C1 Method for avoiding overload in forward drive tube muff in tunnels |
| 09/17/1997 | EP0795678A1 Device for enlarging the cross-section of a pilot borehole |
| 09/16/1997 | CA2059065C Rectangular shield excavating machine |
| 09/10/1997 | EP0794315A1 Device for drilling in soil |
| 09/10/1997 | EP0793765A1 Drilling and setting device for anchoring bolts |
| 09/04/1997 | DE19607629A1 Tunnel construction technique |
| 08/28/1997 | DE19647160A1 Method for laying pipes underground using tunnelling machine |
| 08/28/1997 | DE19616660A1 Arrangement for supplying and disposal of underground working with multi-component resin |