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WO/2011/076616A1 |
The invention relates to a method for replacing a disk cutter (1) mounted with preload in a casing (2) attached to the cutting head of a tunnel boring machine, operated using a disk cutter (1) bearing, firmly attached thereto, an element...
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WO/2011/069481A2 |
The invention relates to tubbing works embodied as a tubular inner shell of a tunnel or shaft, comprising tubular sections which are arranged successively in the longitudinal direction, respectively formed by a tubbing ring (2) and align...
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WO/2011/069480A2 |
The invention relates to tubbing works embodied as a tubular inner shell of a tunnel or shaft, which comprises tube sections arranged one behind the other in the longitudinal direction, respectively formed by a tubbing ring (2) and align...
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WO/2011/070188A1 |
Method for making tunnels or perforations in civil engineering works using sacrificial tunnels. This invention concerns the excavation of sacrificial tunnels to reduce or eliminate the need to use supporting elements in the construction ...
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WO/2011/069482A2 |
The invention relates to an underground support embodied as a tubular inner shell of a tunnel or shaft, comprising annular sections (2) which are arranged successively in the longitudinal direction, respectively aligned in relation to ea...
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WO/2011/069483A2 |
The invention relates to tubbing works embodied as a tubular inner shell of a tunnel or shaft, comprising tubbing rings (2) which are arranged successively in the longitudinal direction, aligned in relation to each other with the front a...
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WO/2011/067738A1 |
In the production of reinforcing elements for strengthening the excavation face of a tunnel, a fiberglass profile comprises an axially extending body formed by glass fibers anchored in a polymer resin through a polymerization process. Th...
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WO/2011/067797A1 |
The present invention falls within the scope of the production of reinforcing elements for strengthening the excavation face of a tunnel. More precisely, the present invention relates to a fiberglass profile and to a method for producing...
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WO/2011/064690A2 |
The invention relates to a shield canopy for a shield-type support for underground mining, comprising a canopy plate (2) and a supporting structure (5) being welded on below the canopy plate (2) and having a plurality of longitudinal spa...
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WO/2011/063804A2 |
The invention relates to a sealing arrangement for shaft and tunnel constructions. The aim of the present invention is to improve the sealing of gaps between components of shaft and tunnel constructions, in particular if the components a...
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WO/2011/063433A2 |
The invention provides an indicator mechanism for a hydraulic valve of a hydraulically inflated device which includes a body which has a bore through which a fluid flows from a source to an interior of the device and which is configured ...
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WO/2011/057349A1 |
Cable bolt plug (10) comprises an elongated body (16) which is configured to interference fit into the hole (12) in which the cable bolt 14 is disposed. The plug 10 is provided with a first passage (18) through which a proximal end (20) ...
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WO/2011/060453A1 |
A reaction force transfer apparatus useable during tightening or loosening of a fastener includes a first force-transmitting element rotatabiy attachable about a turning force axis of a device for effecting rotation of a receiving member...
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WO/2011/054722A1 |
The present invention relates broadly to a torque multiplier 10 comprising an input shaft 12 together with its input gear 14, a secondary shaft 16 together with its associated pair of multiplier gears 18 and 20 respectively, and an outpu...
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WO/2011/047416A1 |
A multi-strand cable bolt (10) has a pitch of at least 250mm such as about 300mm. The cable bolt (10) is formed with a plurality of spaced bulbs (12) having a bent kingwire therein. The bulbs ( 12) preferably each have a length of 180mm ...
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WO/2011/039693A2 |
The invention relates to an advancing assembly for underground powered shield support, comprising at least one floor skid (7) for supporting the powered shield support, an advancing beam (9) and a substantially perpendicularly arranged l...
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WO/2011/040187A1 |
Disclosed is a jacking force-transmitting material to be positioned between jacking pipes in the jacking method, which has improved cushion properties and, therefore, can effectively prevent breakage in the jacking pipes even in a case w...
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WO/2011/038449A1 |
A method of blasting rock at an underground blast site in which boreholes (11a, b, c) are drilled in a rock mass (10) from a drive defining face (12), each borehole is loaded with at least one charge of explosive material (13a-c, 14a-c, ...
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WO/2011/032525A1 |
The invention relates to a pressure limiting valve (1) for use in hydraulic and oil-in-water units, comprising a compact valve housing (2) and above all the valve piston (5), which can be slid in the valve housing (2) against the force o...
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WO/2010/134731A9 |
The present invention relates to a top-down construction method which directly withstands earth pressure by means of an underground part (beam, slab) of a building while excavating, to construct the underground part of the building. More...
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WO/2011/032283A1 |
A seismic tool assembly for effecting a drill hole and enlarging a lowermost end thereof whereby an anchor can be set more securely therein. A drill bit is inserted through an opening in a drill stop member, which is mounted on a stabili...
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WO/2011/026178A1 |
A tensioning assembly for a cable bolt having a shaft, the tensioning assembly comprising: a base member securable to the shaft so as to be fixed with respect to the shaft; a bearer member moveable with respect to the base member in the ...
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WO/2011/028790A1 |
A mine roof bolt includes an elongated rod and a polymer coating layer. The elongated rod has a first end and a second end with a protruding portion extending radially outward from the elongated rod. The polymer coating layer covers at l...
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WO/2011/026179A1 |
A drive assembly for a rock bolt having a shaft, the drive assembly comprising a drive receiving portion adapted to be part of or disposed on or about the shaft, the drive receiving portion having a dolly engagement end surface, and a do...
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WO/2011/026181A1 |
A drive assembly comprising a nut adapted to be located over an elongate member and engage the elongate member, the nut having a driver engagement end surface; a driver having an internal cavity, an opening extending into the cavity, and...
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WO/2011/026180A1 |
A dolly for imparting rotary drive to an assembly having a shaft and a drive receiving portion which are rotatable with respect to one another, the dolly having a driven portion adapted to engage a drive, a drive imparting portion adapte...
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WO/2011/020484A1 |
The invention relates to a method for automatically producing a defined face opening during longwall operations, having a face conveyor (20), at least one extraction machine (22), and a hydraulic shield support, in underground coal minin...
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WO/2011/020696A2 |
The invention relates to a coupling (1) for connecting anchor rods (2) having external threads (4) for injection bore anchors, wherein the coupling (1) comprises a sleeve-like coupling fitting (5) having screw-in openings extending from ...
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WO/2011/020144A1 |
A point anchoring and pre-tensioning system used on a bar or bolt or self drilling rock bolt comprising a friction anchor device at the leading end of the bolt wherein the friction anchor device comprises two or more expansion shells whi...
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WO/2011/021942A1 |
Device for erecting an arch construction comprising a number of similar jigs (13) which are adapted to be attached to one another with longitudinal stiffening bars (12) in a direction denoted the longitudinal direction, said jigs being m...
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WO/2011/016826A1 |
A bolt includes a tube, at least a portion of which is hollow, having a top and the bottom and at least one dimple. The bolt includes an insert fixed to the interior of the tube in proximity to the dimple with the dimple disposed between...
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WO/2011/006461A2 |
A hydraulic circuit for longwall support for use in underground mining for supporting a longwall by means of a plurality of support shields comprises a pressure monitoring device in the pressure line between the load maintaining valve an...
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WO/2011/004442A1 |
Disclosed is a drilling device that achieves an efficient drilling rate and efficient earth removal, even when the drilling depth into the ground beneath is shallow. The device is equipped with a traveling body that can travel and a scra...
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WO/2011/004296A2 |
The invention relates to a gob shield for a shield support and to a method for producing such a gob shield. The gob shield comprises a metal cover plate (14), two cap connecting joints (21) for connecting the gob shield to a hanging roof...
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WO/2011/006041A1 |
A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support The near end roof support has a longitudinal length substantiall...
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WO/2011/000037A1 |
In forming a mine shaft for an underground mine, earth excavated by a boring machine (21) is transported upwardly by handling unit (22) to a transfer station (33) where it is transferred into skips 36 which are raised and lowered along s...
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WO/2011/000038A1 |
In developing an underground mine a mine shaft (80) is formed by excavating earth and removing excavated material from the shaft (80) by a material transport system comprising skips (36) movable up and down on skip guides within the shaf...
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WO/2011/000024A1 |
A plug (10) for sealing a cable bolt hole comprising a resilient cylindrical body (12). At least one longitudinal bolt hole (18) is provided through the body (12) for receiving a cable bolt (19). A longitudinal vent hole (22) is provided...
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WO/2010/148421A1 |
A grout plug (40) comprises a body (42) provided with a (stop 44) configured to project into and form a substantial seal in a longitudinal slot (22) of a tube (20). A ring (58) is provided about the body (42) adjacent a trailing end of t...
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WO/2010/150630A1 |
An opening in which a replacement bit was disposed can be closed without requiring a large drive force, the replacement bit can be replaced without moving the replacement bit, and the replacement bit can be replaced without impairing the...
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WO/2010/145529A1 |
A device used for sealed launching and arrival of the shield machine, includes a steel sleeve (1) which is formed by assembling a plurality of arc steel plates (11). A bracket (2) and slurry discharging pipes are welded at the bottom of ...
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WO/2010/144432A1 |
A truss shoe for a roof support system includes a bolt receiving section, an intermediate section, and a cable engaging section. The cable receiving section has a passageway having a first open end spaced from, and in facing relationship...
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WO/2010/075947A9 |
The invention relates to a method for adjusting an automatic level control of the plane in longwall operations, wherein the plane can be adjusted by means of a boom control into a climbing motion, dropping motion, or neutral motion, wher...
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WO/2010/140006A2 |
21 ABSTRACT ANCHORING BOLTHAVING AN EXTRUDINGPISTON The invention provides an anchoring bolt comprising: a bolt tube having an inner wall which forms one or more indentations; and5 an extruding piston which has a sealing part to engage t...
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WO/2010/051566A9 |
A bail (20) for an expansion shell assembly which is formed from a continuous elongate metallic member shaped to have a yoke (24), at least two U-shaped legs (26,28,30) which extend from the yoke, and a biasing element (76) which project...
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WO/2010/133883A2 |
Rock bolts (1) exist in various forms, wherein it is particularly advantageous if the discharge end (4) is provided with a mixing head (15), into which the required exit hole (8) is integrated. This exit hole (8) is protected by the shap...
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WO/2010/133568A1 |
The present invention relates to an element (2) for handling a heavy construction structure, including: a rod (20); a mobile element (24) pivotably connected to the rod (20) and capable of being retracted along the rod (20) for the inser...
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WO/2010/130005A1 |
A length adjustable member (10), including, an outer tubular member (12), an inner tubular member (14) slidably disposed within the outer tubular member (12), a central post (30) fixable at its base with respect to the outer tubular memb...
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WO/2010/128861A1 |
A guiding device for a rock-drilling machine (1), the rock-drilling machine (1) including a drill portion (4) with a drill bit (10) and a drill-portion centre axis (26), and a string portion (6) with a string-portion centre axis (28), th...
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WO/2010/128943A1 |
The present invention concerns a method, a system, the use of the system and a reinforcement member for the direct detection of the presence of a cavity in a drill-hole intended for the reception of a reinforcement member. The method com...
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