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7316456 |
Roadheading or mining machine with roof bolt drilling and setting devices
In a roadheading or mining machine including cutting tools movable over the mine face and roof bolt drilling and setting devices, at least two roof bolt drilling and setting devices are pivotally...
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7201541 |
Prop head bearing
A prop head bearing between the roof bar and the prop ( 4 ) of a shield-type support frame, comprising a ball-joint socket ( 3 ) on the roof bar and open towards the prop for receiving a ball-joint...
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6942301 |
Method for boring and placing bolts for imbedding adhesively and device for carrying out this method
A method and device for drilling and setting adhesive anchor bolts close to the mine face during the cutting operation of a tunneling or mining machine which is capable of being displaced on a...
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6848748 |
Mining system with drilling, loading, conveyor, and support
The extraction machine for underground ore extraction operations, with extraction of the extraction product by blasting has an advancing support equipment ( 11 ) and a face conveyor ( 18 ) coupled...
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6578926 |
Mining machine having stabilizing apparatus and stabilizing apparatus
A mining machine having a stabilizing apparatus includes a mining machine and a stabilizing apparatus attached to the mining machine. The stabilizing apparatus includes a stabilizing element and a...
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6505892 |
Softwall mining method and device
A softwall mining method and device. Each of a plurality of mining devices comprise a supporting portion, an earth moving portion and a coupling mechanism for advancing the earth moving portion...
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6497536 |
Roof support arrangement for mining apparatus and roof bolting equipment
The invention provides an apparatus ( 2 ) for installing bolts into a mine entry, said apparatus including: a frame ( 8 ) having a forward end ( 20 ), a rearward end and lateral sides; at least one...
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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...
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6386640 |
Oil tank arrangement for mining apparatus and roof bolting equipment
The invention provides a vehicle which employs hollow structural members to store and cool hydraulic fluid used by the vehicle or by equipment located thereon. The preferred form of the invention...
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6224164 |
Mining machine with detachable articulated cutting assembly
A mining machine that has a chassis that defines an operator area thereon and has a mining assembly attached thereto. A vertically extending shield assembly is supported on the chassis to prevent...
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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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6109700 |
Mine roof bolting apparatus and method of using the same
A modular roof bolting apparatus adapted to be installed on a face conveyor track of longwall mining equipment. A roof drilling assembly is rotationally mounted on a platform to an operating...
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6089791 |
Tunnel construction method
To construct a tunnel in a formation (11, 15) with zones of high hydraulic pressure (15), a gallery (13) is driven from the stable formation (11) toward the problem formation zone (15). At least...
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6086159 |
Softwall mining method and device
Slurryable ore where the overburden is unstable and subject to collapse is mined from substantially parallel elongated main trenches connected by a perpendicular trench at the bottom of the mineral...
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5961185 |
Shielded cutterhead with small rolling disc cutters
An improved disc type rolling rock cutter, and novel cutterheads employing such cutters. A rock cutter with an improved, simplified structure, with compact bearing, and smooth, rounded blade shape...
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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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5913573 |
Roof bolt drilling and setting apparatus
A displaceable mining machine (1) comprises roof bolt drilling and setting apparatus (5, 13). A conveyor (6) is articulately pivotable in a rear portion of the machine about axes (16, 16') in order...
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5890771 |
Tunnel boring machine and method
A tunnel boring machine particularly adapted to operate at substantial depths below the earth's surface. The machine comprises a head section comprising a cutter head that is rotatably mounted to a...
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5795032 |
Mining machine with multiple propulsion members
A mining machine that has an elongated frame member and a mining assembly attached thereto for dislodging material from a seam upon contact therewith. The mining machine is equipped with at least...
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5634692 |
Main-ancillary tunnel excavator
A turnable tunnel excavator and tunneling method are provided which can alternate between construction of a main tunnel A and crosscuts B, and can excavate other tunnels without having to pass...
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5632575 |
Method and apparatus for controlled pumping of bentonite around a pipe jacked tunnel
An apparatus and method for selectively injecting a liquid bentonite slurry around an exterior of a tunnel liner segment which is pressed into a tunnel being concurrently excavated during a pipe...
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5582467 |
Displaceable working apparatus with extensible boom
A displaceable working apparatus provided with a platform having an extensible boom and being displaced on a guide rail is disclosed. The apparatus has a main frame secured to a main support which...
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5547260 |
Auxiliary cutter units of a shield machine
Preliminary cutter units of a shield machine provided with preliminary cutters capable of continuously excavating soil in a working place even if main cutters are worn away. In a shield machine...
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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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5474365 |
Apparatus for mining a seam, in particular of coal
A mining apparatus that works a horizontally and longitudinally extending seam having a vertical face formed by an upper hanging wall and a lower foot wall has a longitudinal row of walking props...
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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...
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5340199 |
Method and machine for excavating drifts, tunnels, stopes, caverns or the like
To excavate drifts, tunnels, stopes, caverns or the like, tools operating in an undercutting manner are mounted on radially pivotable tool arms, which are located on a rotary working head. With at...
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5234257 |
Mobile mining machine having tilted swing axis and method
A mobile mining machine for cutting a tunnel in rock has a wheel-like cutterhead assembly supported by a pitch boom assembly that causes movement of the cutterhead assembly in the vertical plane. A...
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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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5203614 |
Tunneling machine having liquid balance low flow slurry system
A tunneling machine convertible between a "closed mode" and an "open mode" of operation, having a rotatable cutterhead with muck openings communicating with a pressurizable cutterhead chamber and a...
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5199825 |
Grid composite for longwall shield recovery in underground coal and trona mines
A grid composite for protecting men and longwall mining equipment during longwall shield recovery includes a regular polymer geogrid structure formed by biaxially drawing a continuous sheet of...
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5199510 |
Raise boring head and stem assembly method
An improved method for assembling a stem within a mating, close fitting hole of a raise boring head by attaching an overhead beam to the body of the raise boring bit, supporting the stem with its...
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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...
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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...
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5163738 |
Apparatus for mining a seam, in particular of coal
A mining apparatus for working a horizontally and longitudinally extending seam having a vertical face has a longitudinal row of walking props extending along the face and each having a...
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5135326 |
Articulated shield tunneling machine
An articulated shield tunneling machine suitable for excavation along a curvature with an articulated shield having front and rear shield sections. In contrast to the conventional apparatus which...
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5118220 |
Method of building underground cavern and tunneling machine
A method of forming an underground cavern aiming at forming an underground cavern of a large scale at a very deep place in soft ground and soft rock layers safely and economically, and a tunneling...
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5106163 |
Method and apparatus for inspecting a forward end portion in a tunneling machine
A system for inspecting a forward end portion in a tunneling machine including cutter bits and a chamber such as a tunnel boring machine or a shield tunneling machine. The system includes an...
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5104267 |
Roof supports for a mining installation
A mine roof support or lining frame for use in mine workings with thick inclined seams has hydraulic props mounted between an inclined goaf shield and a floor sill. The floor sill is coupled with a...
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5087102 |
Continuous mining machine
A continuous mining machine for excavating a longitudinal shaft or tunnel underneath the surface of the earth. The machine has a working platform that mounted on the transport mechanism, and a...
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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....
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5050934 |
Shearing machine with roof-bolt drilling and setting devices
A shearing machine with roof-bolt drilling and setting devices which are jointedly connected to the shearing machine and can be hydraulically braced between roof and floor of the roadway. A...
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5016942 |
Anchor boring unit
An anchor boring unit includes a base plate attached to a loading apron of a section advance machine, with a square tube swivelling around a vertical axis and movable by a hydraulic cylinder...
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4966417 |
Device for guying a drift advancing machine within a drift
A device for guying a drift advancing machine within a drift has props which can be guyed between the drift roof and the drift floor and having articulated caps, connected to it. There are arranged...
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4953915 |
Roof fall separating and removing apparatus and method for use in thin seam highwall mining
A thin seam highwall mining machine has a cutter head for mining coal from a seam while advancing forwardly into a mined hole, a power head anchored to a bench at the surface, and multisection...
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4953914 |
Mining machine with roof bolting apparatus
A mining machine includes a frame with a material dislodging head mounted on the end of the frame. Ground engaging tracks propel the machine within a mine along the floor of the mine to advance the...
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4946316 |
Method and device for moving a shield-type support trestle
A method and device is provided for the moving of a shield-type support trestle 1 having stamps 4, 5 arranged between a roof pressure cap 3 and a lying skid 2, a pushing ram 6 is in the lying skid...
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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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4865390 |
Continuous mining machine with roof supporting apparatus and method for anchoring crossbeam supports
A continuous mining machine is provided which includes a frame assembly having a material dislodging head mounted on one end of the frame. Ground engaging traction treads or wheels propel the...
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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...
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