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7510025 |
Boring machine
A micro tunnelling machine has a tunnelling head with a boring bit which is forced in a horizontal direction by a hydraulic thruster. The direction of the head is laser guided. The beam strikes a...
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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...
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5931601 |
Tunnel excavator
A tunneling machine intended to stably carry out gripper replacement by restricting the load imposed on gripper jacks for the main gripper as much as possible during excavation of an inclined...
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5915790 |
Tunnel boring machine
A cutterhead is supported at the front part of a main frame so as to incline at a specified angle with respect to a vertical plane. The main frame includes (i) a roof support disposed at a position...
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5527099 |
Tunnel boring machine anchor shoe structure and process of operating a tunnel boring machine having such anchor shoe structure
The anchor shoes of a tunnel-boring machine arranged in a circular configuration are individually truncated by being tapered rearwardly so that the girth of the circular anchor shoe configuration...
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5284404 |
Moving steel form system
A travelling steel form system includes a three-dimentional framework mechanism with multiple faces crossing and coupling with one another. A set of form panels are fixed to the outer side of the...
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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...
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5205613 |
Tunnel boring machine with continuous forward propulsion
A tunnel boring machine includes a cutterhead having a plurality of cutting units and being rotatable on a machine frame. Two sets of three anchor shoes float relative to the frame and are disposed...
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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...
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5169264 |
Propulsion process of buried pipe
In a propulsion process of buried pipe, an endless pipe to be buried is formed by sequentially curving a pipe material of long hoop shape made of a plastic material, and this endless pipe is...
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5104262 |
Tunnel boring machine
Tunnel boring machine comprising a number of swingable arms (11,12,13,14) provided with boring tools (41,42,43,44) for the working of the tunnel wall outside its normal diameter. The arms may be...
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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)...
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5090844 |
Plant for digging and shoring up the walls of tunnels during excavation
The invention falls within the art field of shields used in the excavation of tunnels for any given utility (rail, road, underground railway, sewers, pipelines, power cables etc.), and of all...
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5078545 |
Method for boring hole in the ground and apparatus therefor
A system for boring a hole in the ground including an excavating machine provided with a tubular body; an excavating mechanism supported by the body; a mechanism for shifting the excavated...
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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...
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4936709 |
Method and apparatus for laying pipes in the ground with advance of propulsion shafts installed with pipe-supporting attachments
A method and apparatus for laying pipes of low bearing force like a polyvinyl chloride pipe and others in the ground with a propulsion pipe laying method, wherein an excavation device to excavate a...
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4915453 |
Floating shoe tunnel boring machine and boring process
A tunneling machine body carrying a rotary cutterhead can be advanced continuously by exerting advancing thrust forces on it, first by top and bottom bipods reacting from top and bottom anchor...
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4874267 |
Tunnel boring machine
Telescopic tunnel boring machine including a front shield (10) and a rear shield (16) with a cutting head (14) at the forward end of the front shield. Rearwardly extending shutters can be moved out...
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4830539 |
Pipe propelling apparatus
An apparatus for propelling a plurality of pipes arranged in series comprises basic thrusting means for generating a thrust to be applied to the pipes and intermediate thrusting means for receiving...
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4808030 |
Shield tunneling method and assembling and disassembling apparatus for use in practicing the method
Shield tunnelling method and assembling and disassembling apparatus for use in practicing the method. A shield having shield jacks is actuated for drilling a hole in the ground. Inner forms and...
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4696600 |
Method and apparatus for modifying the cross-sectional profile of an adit, tunnel or the like
To modify a given profile of an adit, tunnel, gallery or the like, particularly a circular profile so as to give it the shape of a vault, a sequence of individual recesses are made in the...
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4682914 |
Hydraulic trench support
A hydraulic trench support includes a piston and cylinder head supported within a cylinder such that the cylinder head is fixed at one end of the cylinder and the piston is moveable within the...
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4453863 |
Trench shoring device
There are disclosed two embodiments of a trench shoring device of the type having rails which are forced against the sides of the trench by one or more fluid actuated, extendible and retractible...
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4302126 |
Manhole cover support ring
A manhole cover support ring adapted to be placed within an existing manhole frame for raising the height of a manhole cover. A circular ring is formed by a generally vertically extending flange...
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4289356 |
Shield assemblies for installation in under-ground roadways and rock excavating machines including such shield assemblies
A shield assembly for installation in an underground roadway or tunnel comprises an articulated upper shield assembly, a lower shield assembly and a plurality of hydraulic rams for urging the upper...
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4270876 |
Method of lining a vertical mine shaft with concrete
The apparatus includes a cylindrical retainer form spaced inwardly of the wall of the shaft by the desired thickness of the liner to be poured and having overlapping edges which seal against...
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4259030 |
Ground anchor
Herein described is an anchor for use in an open earth trench which is adapted for use with equipment performing construction functions within the trench. A cable is attached to a winch on the...
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4252463 |
Tunnel driving apparatus
A drive shield of a tunnelling apparatus employs composite drive members or poling plates supported and guided for advancement in the driving direction on a frame. Each drive member has a front...
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4178111 |
Apparatus for the excavation of subterranean tunnels
Tunnel excavating apparatus comprises a hollow cylindrical shield adapted to be axially forced through subterranean material and having a circular cutting edge at a leading end portion. An inclined...
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4140345 |
Tunnel-excavating machine with shield formed of segments
A tunnel-excavating machine comprises an excavating head, preferably a full-cut head, adapted to excavate the full-cross-section of the tunnel to be formed, which is slideably mounted for movement...
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4122683 |
Tunnel drive shield
A tunnel drive shield is provided with a plurality of bracing units spaced around its periphery. The bracing units are expansible against the surrounding tunnel wall to control the direction of...
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4095436 |
Method of, and apparatus for, controlling the advance of a tunnel drive shield
Apparatus is provided for controlling the advance of a tunnel drive shield. The drive shield is of the type having a plurality of elongate implements (or planks) which are supported and guided on a...
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4073153 |
Drive shields for tunnelling
A drive shield for use in a tunnel driving operation has an inner frame with hollow rings interconnected in a rigid fashion. A plurality of sharp-ended drive members combine to form a cylindrical...
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3950956 |
Driving of tunnels
An apparatus for driving a tunnel, the apparatus having a knife shield composed of a circular array of elongate knife implements supported by a frame and attachable to a drive frame which can be...
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3903707 |
Tunneling shields
A tunneling shield comprises pairs of forward and rearward support frames carrying sharp ended planks, the frames being supported on shoes slidable along abutments. Each frame is constructed in two...
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3896629 |
Trailing service vehicle
A service vehicle suitable for trailing connection to a tunneling shield includes a horizontal platform having one end pivotally connected to the rear end of the tunneling shield. The other end of...
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3863793 |
MINING SHIELD-SUPPORTING CARRIER
A mining shield supporter carrier which spans over a cutting machine in a mining road to permit a cutting machine to advance independently, without interruption. The shield supporter carrier has an...
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3823566 |
EARTH-SUPPORTING APPARATUS AND METHOD
The apparatus comprises an open, circular frame, which is resiliently expansible and contractible, arranged for towing in accompaniment with a tunneler (or the like). Hydraulic cylinders coupled...
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3800549 |
TUNNELLING APPARATUS
A tunnelling apparatus composed of a plurality of elongate planks arranged side-by-side on a circumferential path to form a shield of circular configuration. The planks are separated into two...
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3762174 |
PROTECTIVE INCHING SHIELD FOR PIPE-LAYING
The forward end of a large pipe being laid in a trench opens into an open-topped casing. A fluid pressure jack received within the forward portion of the pipe being laid reacts between the forward...
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3733835 |
APPARATUS FOR ADVANCING TUNNEL SUPPORTS
Apparatus and method for continuously or intermittently advancing tunnel supports against surrounding earth pressure. Cutting edge and trailing shells are interconnected by a longitudinal frame or...
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3656810 |
TUNNELING SHIELD
A tunneling shield for soft loose soils, whose face working space is divided into several decks accommodating the working tools the latter being installed so that they can move not only forward and...
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3550389 |
DEVICE FOR ERECTING MONOLITHIC CONCRETE LINING OF UNDERGROUND EXCAVATIONS
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3550382 |
METHOD OF CONSTRUCTION OF TUNNEL LINING
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3377105 |
Protective overhead shield for tunneling machine and method
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3373572 |
Method of driving tunnels
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3250078 |
Apparatus for driving tunnels
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3230720 |
Trench shoring device
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3138933 |
Method of and apparatus for driving a tunnel through and supporting earth structure
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3613384 |
Title is not available
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