Matches 1 - 50 out of 113 1 2 3 >
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7070359 Microtunneling systems and methods of use  
A tunneling system including a tunneling apparatus including a cutting structure for forming a borehole and at least one linkage section for transmitting a force generally toward the cutting...
7040712 Shield tunneling method and shield tunneling machine  
An excavating drive ( 22 ) movable backward/forward is accommodated in a turnable body ( 9 ) which in turn is turnable about an axis perpendicular to an axis of and in a skin plate ( 7 ). A cutter...
6698844 Earth discharging device for upward-facing shield machine  
An earth discharging device, for a shield machine for constructing a tunnel in the vertical direction, has a pipe for discharging downwardly earth and sand that have been excavated by the machine...
6595724 Tunnel excavating machine and excavating method  
A tunnel excavating machine of high-speed construction capable of completely stopping invasion of water and allowing covering members to be assembled easily is provided. This tunnel excavating...
6485233 Foaming composition  
A method of boring a tunnel through a stratum utilizing a shield tunneling apparatus, the process comprising the injection into the stratum at the cutting face of an aqueous material comprising (a)...
6431653 Tunnel-boring machine and method of using the same  
The tunnel rock drill ( 100 ) for driving a tunnel bore optionally in open or shielded mode comprises a shield tail ( 33 ), which is connected to the drill head ( 10 ) and which covers optionally...
6375390 Method for widening road, superhighway or railway tunnels, without interrupting the traffic  
A construction method for widening road, superhighway or railway tunnels, without interrupting the traffic flow includes a first stage of excavation; in steps, of the ground between the theoretical...
6206478 Tunnel excavator with crawler drive and roof support bearing frames  
The tunnel excavator (1) includes a cutter supporting body (3) provided with cutters (2) for excavating the earth. The tunnel excavator also includes crawlers (13) for moving backwards and...
6092963 Tail structure of shield driving machine  
The present invention relates to a tail structure of a shield driving machine, and in particular relates to an improvement technique of the tail sealing portion of this type of shield driving...
6082930 Shield driving machine  
The present invention relates to a shield driving machine by which eliminates excessive work of the ground when working at a curved section while suppressing an increase of the sinking of the...
6017095 Tunnel boring machine with crusher  
The present invention relates to a tunnel boring machine particularly a micro-tunnelling machine having a cutting head rotatably mounted on the end of a housing and being driven by a first motor...
5765925 Tunnel boring machine for hard ground and soft ground  
A tunnel boring machine for boring a tunnel through hard and soft grounds includes a front body, a cutter head mounted to the front body and having a cutter for boring a hard round, and a drive...
5743676 Method and device for keeping outfall drainage in service during sewerage construction  
In a method for keeping outfall drainage in service whilst constructing sewerage, wherein a main drain is laid in the position of an old drain or in a new line by pipe or shield tunnelling under...
5678957 Method for underground excavation  
A method for underground excavation below an area, without opening the area above the excavation, the method comprising constructing at least a pair of diaphragm walls, the walls being at two...
5538362 Shield excavator  
A shield excavator for constructing a tunnel, a hole, a groove and the like having a polygonal, preferably, square section. The excavator (10) comprises: a cylindrical shield body (12) having a...
5527135 Method for injecting lubricant or back-filling material into a space between the outside of double-wall pipes and the ground in the pipe-jacking method and an apparatus therefor  
A conduit comprised of double-wall pipes A is laid in the ground by the pipe-jacking method. Each of double-wall pipes A comprises inner pipe 1 and outer pipe 2 and is provided with sheath pipe 4...
5460432 Cutter head for a tunnel excavator  
In a tunnel excavator for tunneling by rotating a cutter head provided in front of a shield body to thereby excavate the working face of a tunnel using disk cutters attached to the front surface of...
5443305 Tunnelling machine  
A tunnelling machine for large cross-section tunnels (with a 12 m diameter and more), as well as for excavating loose rocks leading to groundwater, has a shield with a cylindrical case. A front...
5393172 Shield tunneling machine  
A shield tunneling machine comprises a shield body having a soil chamber, an inside chamber and a partition wall. The soil chamber has a conical peripheral surface converging gradually rearward. A...
5346331 Shield tail sealing  
The invention relates to a shield tail sealing (7) for driving shields consisting of a basic body (2) made of elastomeric material and having a substantially rectangular cross section in the...
5330292 System and method for transmitting and calculating data in shield machine  
The present invention discloses a system and a method for transmitting data in a shield machine and for calculating the filling amount of a void by detecting the distance to the natural ground. The...
5284403 Control method and control equipment for drilling apparatus  
A method for controlling advancement of a drilling apparatus comprising a drill head having tools therein and at least one conveying tube is disclosed. The method utilizes changes in pressure...
5255960 Tunnel drilling apparatus with drill waste removal  
A drill head for drilling a tunnel in rock or soil comprises a rotatable drill bit assembly and a cylindrical protecting tube. The bit assembly comprises a bit holder and a cylindrical drill bit....
5236284 Drilling apparatus and method for its control  
A drilling apparatus and a method for its control maintains the alignment of a drill head while driving a tunnel. The control is achieved by manipulating the center of gravity of a drill bit unit...
5221160 Subterranean connecting method for construction of shield tunnel and connecting apparatus therefor  
A disclosure is made of a subterranean connecting method and a connecting apparatus therefor which are suitable for use when two shield machines are used to excavate a pair of tunnel sections from...
5199818 Method and apparatus for detecting collapse of natural ground in shield driving method  
A method and an apparatus for performing measurement by a resistivity method in order to detect the thickness of a sludge layer on the outer periphery of a shield machine. A Wenner electrode row...
5190407 Rectangular shield excavating machine  
A rectangular shield excavating machine comprises a quadrangularly tubular shield body having a space for receiving an excavated matter at the front end, a rotor disposed in the space so as to be...
5184918 Recoverable tunnelling machine  
The tunnelling machine for driving inaccessible tunnels by pressing forward by means of tubes can be moved out again through the tunnel driven by it. For this purpose, an annular outer area (2b) is...
5180252 Earth pressure system shield process  
The invention relates to an earth pressure system shield process. First of all, an excavation additive consisting of the mixture of an agent for improving fluidity and viscosity of an excavated...
5174683 Telescopic double shield boring machine  
The invention relates to a boring machine for digging tunnels in a wide variety of qualities of ground, of the type comprising a first front shield, containing the boring head, and the members for...
5171105 Process and device for lining tunnels and ducts having circular and non-circular cross-sections, especially for canal and tunnel construction  
In a process and a winding device for lining elongated spaces such as tunnels or ducts of circular and non-circular cross-sections, especially for canal and tunnel construction band is employed....
5156490 Shield tunnelling apparatus  
A shield tunnelling apparatus is provided that includes a first tubular shield body in which a cutter assembly for excavation and a drive mechanism for driving the cutter assembly are disposed; a...
5125768 Method and apparatus for the production of underground pipelines  
A method and apparatus for producing an underground pipeline from an excavated hole uses a drill head with a suitable tool attached thereto. Loosened soil is transported out of the drilled tunnel...
5123708 Shield tunnelling machine  
A shield tunnelling machine is provided. Such shield tunnelling machines include a tubular shield body; an excavating cutter assembly disposed on a front end of the body; a partition wall for...
5104261 Tunnel boring machine  
Tunnel boring machine for reaming of a pilot tunnel (11). The machine housing (12) is provided with a projecting part in front of the boring head (13), said projecting part comprising a part (20)...
5072992 Shield unit  
A shield unit has a cylindrical shell made up of two sections arranged in succession one after the other, that is, a head section and a tail section which are connected by a traversing mechanism....
5051033 Bracing device for a self-advancing shield tunnelling machine  
A bracing device for a self-advancing shield tunnelling machine for tunnel construction comprising a control shield within which is mounted a cutting unit, and at least two bracing shields each...
5051032 Method and apparatus for continuously excavating shaft and tunnel  
A shield excavator excavates a shaft. Then, the excavator is caused to swing to change its posture and excavate a tunnel. Thus, the shaft and the tunnel is continuously excavated by the single...
5032039 Underground excavator  
An underground excavator includes a chamber defined in the forward section of an excavator body for receiving excavated material such as soil, sand, gravel, clay and their mixtures. A rotary cutter...
5017045 Method and apparatus for controlling attitude of shield excavator  
Directional control of a shield excavator is automatically carried out merely by inputting a direction of rotational moment to which the excavator is directed and a magnitude of the moment.
4915541 Method and apparatus for continuously boring and lining tunnels and other like structures  
Disclosed is a continuous tunneling and lining machine. The machine is capable of simultaneously boring and lining a tunnel through a solid medium. The machine comprises four major components...
4904115 Method and device for controlling the trajectory of a shield-type tunnelling machine  
Method of controlling the trajectory of a shield-type tunnelling machine equipped with displacement control hydraulic rams (3), characterized in that, these rams being divided into at least three...
4898496 Apparatus for underground tunneling  
The invention relates to an apparatus for underground tunneling. It has a working tube which can be driven in the drilling direction and a digging unit mounted therein, and it has a cutterhead...
4863313 Method for lining tunnel wall formed by shield excavation  
A method for lining a tunnel wall formed by a shield excavation includes filling a space between the tunnel wall surface and the outer peripheral surface of a lining form in two stages by dividing...
4856936 Form for concrete-placement tunnel lining  
A form for a concrete tunnel lining usable behind a tunnel excavator with a traveling shield is made of an inner tunnel-lining sheathing and a form front. The inner tunnel-lining sheathing is...
4854776 Process and apparatus for lining a tunnel with concrete  
A process for lining a tunnel with concrete behind a tunnel excavator having a for front advanced along with an excavator head in which the concrete is forced between the surrounding subterranean...
4848963 Earth pressure shield  
The earth pressure shield for a tunnel and/or gallery excavator has a front working compartment formed by a separating wall having a digging tool and an annular reinforcing space substantially...
4846606 Excavated earth and sand transporting apparatus for use in a shield machine  
An excavated earth and sand transporting apparatus for use in a shield machine for carrying the earth and sand excavated by a cutter head mounted on the most front part of a shield proper through a...
4834580 Method and device for driving a tunnel  
Method and device for driving a tunnel by means of a tunneling machine (10). At the same time as the tunnel is driven, an injection hole (91) is drilled in front of the tunnel front (90) by a rock...
4804295 Shielded tunnel excavator  
A tunnel excavator has a substantially tubular shield having rotatably mounted on one end a motor-driven cutting disk rotatably carrying a multiplicity of roller cutters. The shield is comprised of...
Matches 1 - 50 out of 113 1 2 3 >