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WO/2020/253001A1 |
A two-step fast closed tunnel support structure having an inverted arch. The support structure comprises a first-layer primary support (1), a second-layer primary support (2), a waterproof layer, and a secondary tunnel lining (3) from th...
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WO/2020/252527A1 |
The present invention provides a yielding rock bolt (10) comprising a tendon in the form of a steel shaft (12) and an anchor member (14), having a longitudinal bore, mounted on the tendon. The anchor member presents a compression zone (5...
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WO/2020/248083A1 |
A panel system for the containment of landslides caused by partial collapses and also by "rock breakdowns", for use in the fortification of mining tunnels, hillsides and roads, together with anchor bolts and plates, comprising a network ...
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WO/2020/249677A1 |
Double-walled tube section for constructing a double-walled tube segment suitable for underpressure applications such as an evacuated tube transport system.
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WO/2020/248596A1 |
A protection structure for preventing ground heave caused by tunnel grouting reinforcement and a grouting method, relating to the technical field of geotechnical engineering, civil engineering and municipal engineering, and comprising a ...
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WO/2020/244677A1 |
A freezing construction method for a connecting passage. The method comprises: distributing a plurality of freezing holes, a plurality of temperature measurement holes, and a plurality of pressure relief holes at either end of a connecti...
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WO/2020/245081A1 |
A tension indication device (1) for a rock bolt (2), wherein the tension indication device (1) comprises a deformable body (6) to be compressed at tensioning of a nut attached to a trailing portion of a central rod of the bolt (2).
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WO/2020/247987A1 |
The invention provides a resin delivery coupling member which includes a hollow body which includes a wall, an axially extending passage circumscribed by the wall that opens at a first end and an opposed second end, a circumferential res...
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WO/2020/241514A1 |
A tunnel excavator 1 comprises a disk cutter 40 and a member 50 that is used for measuring wear of a cutter ring 41 of the disk cutter 40 by way of a three-dimensional shape measurement device. The member 50 is installed in a site at whi...
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WO/2020/238210A1 |
A comprehensive supporting method for a fully mechanized mining face of a coal mine, comprising: on the one hand, every time a scraper tail (1) advances by one cut, laying a metal net (4) on a front beam (32) of a support corresponding t...
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WO/2020/232506A1 |
An assembly (7) for triggering an explosive in a hole (9) to produce an explosive blast in the hole includes (a) an explosion trigger (15, 19) for triggering the explosive in the hole, (b) a detonation unit body (21) that is configured t...
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WO/2020/235649A1 |
A coevolutionary combinatorial optimization system comprising: a problem acquisition unit that acquires information indicating a prescribed problem; a parameter acquisition unit that acquires parameters for an algorithm for optimizing an...
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WO/2020/237263A1 |
A clip with a body formed from an elongate rigid member, the body having first and second ends, a first hook-shaped formation, in a first plane, formed at the first end and a second hook-shaped formation, in a second plane, formed at the...
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WO/2020/231321A1 |
A device (20; 30; 40) for measuring strain in an elongated metallic bar (10), the device (20; 30; 40) comprising a housing (25; 35; 45) arranged to be secured to the metallic bar (10), at least one optical sensor (15), at least one light...
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WO/2020/227780A1 |
A system (1) to regulate a flow of ore (101) from a drawbell (103) into a draw point (105) of a mine (106), the system (1) comprising: first and second supports (9, 11); and a movable member (3) having opposite first and second ends (5, ...
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WO/2020/230082A1 |
The invention relates to a removable mechanical tensioning device, and a method of stretching a bolt or stud axially, the bolt being located in and attachable to an object via a nut. The device is operatively attachable to the bolt and c...
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WO/2020/225735A1 |
The invention relates to an inflatable rock bolt (1) and a method of manufacture. A cap (2) is welded onto an end of the pipe (3). A fold (9) is formed from a first side of the rock bolt (1), extending along a length of the pipe (3). A b...
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WO/2020/224233A1 |
Disclosed is a construction method for shield tunnels passing underneath a viaduct in a multi-interval, small-clear-distance and overlapping manner. The construction method comprises the following steps: according to a principle of havin...
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WO/2020/224223A1 |
An anchor rod for surrounding rock support and instability monitoring, relating to the technical field of coal mine production safety. The anchor rod comprises an anchor rod body and a support plate (1). The anchor rod body has a two-lay...
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WO/2020/220850A1 |
Provided are a new easily replaceable hob cutter system and installation method thereof; a system comprises a blade holder (1) and a hob (4); the hob (4) is connected to the blade holder (1) by means of a blade shaft holder (2), and the ...
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WO/2020/222030A1 |
An expandable rock bolt arrangement is provided, comprising an expandable elongate tube defining a leading end and a trailing end; a first tube portion extending from the leading end of the elongate tube, with a cutting bit being fittabl...
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WO/2020/217481A1 |
Provided is a construction method for tunnel support that is provided along the inner walls of a tunnel. The method comprises: a frame structure disposing step (S125, S150) for disposing a frame structure (135) at a prescribed position; ...
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WO/2020/216114A1 |
A method for controlling the stability of surrounding rock applicable to a mining region main roadway of a coal mine. The method comprises the following steps: providing a reinforcing support at a roof and two sides of a mining region ma...
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WO/2020/211276A1 |
A hard rock tunnel boring machine employing a driving rotary hobbing cutter (11-5) comprising a machine frame (2) provided with an endless belt moving system (1). A hydraulic pumping station (3) and a high-pressure abrasive-jet generatio...
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WO/2020/211107A1 |
An artificial ore pillar for an underground support, comprising a roof-contacting steel plate (1), a prestress application mechanism (3) and supporting stand columns (2) inserted therebetween; each supporting stand column (2) is composed...
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WO/2020/206864A1 |
A guide rail-based steel wire mesh transport device for a soft coal seam working surface comprises a hydraulic supporting frame (1) provided between a coal face (5) and a goaf (6); a guide rail (4) suspended under a front section of the ...
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WO/2020/208006A2 |
The invention relates to formwork for producing concrete tubbing (500) for a tunnel lining system, with a concrete tub to receive a volume of concrete required to produce the tubbing and, if necessary, to receive the intended reinforceme...
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WO/2020/206893A1 |
An umbrella-shaped anchor for quick reinforcement of rock mass, comprising a rock mass umbrella-shaped anchor head (1) and a connecting rod (2). The rock mass umbrella-shaped anchor head comprises a sliding mechanism (5), bearing blocks ...
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WO/2020/208046A2 |
The invention relates to a production plant for producing concrete tubbing (500) for a tunnel lining system having at least one formwork (10) for producing the concrete tubbing (500), wherein the production plant is designed either as a ...
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WO/2020/208305A1 |
The application relates to a definition system (100) for de- fining a spraying area (A1, A2, A3, A4) for a spraying ma- chine (102). The system comprises a spraying boom (104) of the machine, sensors of the boom, and a controller (120) f...
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WO/2020/210494A1 |
A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a s...
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WO/2020/199290A1 |
The present disclosure provides a TBM-mounted advance geological forecast system and method based on recognition of lithology and unfavorable geological precursor characteristics. Said system comprises a base (2), the base (2) is provide...
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WO/2020/200868A1 |
A tool guide (1) has a mounting (5), a lifting mechanism (7), and a chassis (9). The mounting (5) is designed to fix a hand-held machine tool (6) and is mounted on the lifting mechanism (7), and the lifting mechanism (7) has a propulsion...
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WO/2020/191923A1 |
A long-distance dust-free shotcrete machine, relating to the technical field of concrete spraying equipment, and comprising a machine body (1), a feeding mechanism (2), a spraying mechanism (3) and a driving mechanism (4). The machine bo...
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WO/2020/193164A1 |
In a cutting roller bearing part (306) as a component of a cutting roller holder for a cutting wheel of a tunnel boring machine, a load measuring unit (612, 615) is arranged in a receiving space assembly (603, 606, 618, 621), which is he...
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WO/2020/193960A1 |
Long tunnels of many kilometres are likely to pass through a range of geologies which may cause problems. Conventional methods involve sampling the geology along a proposed tunnel's length and extrapolating from those samples. The presen...
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WO/2020/196287A1 |
A first transport trolley 12 on which a first pipe 11 is loaded and a second transport trolley 15 on which a second pipe 14 is loaded are moved forward and one end 19 of the first pipe 11 is joined to the other end 20 of the rearmost pip...
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WO/2020/191916A1 |
Disclosed are an anchorage device with anchoring force graded early warning and reciprocating flexible deformation yielding characteristics, and a method therefor. The anchorage device mainly comprises a yielding main body (1), a primary...
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WO/2020/191922A1 |
A push chain-type concrete spraying machine, related to the technical field of concrete spraying equipment, comprising a machine frame (1), a traveling mechanism (3), a slurry spraying mechanism (2), a spiral feeding mechanism (4), and a...
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WO/2020/186710A1 |
An apparatus for protecting a top plate tray during gob-side entry retaining end bracket migration, mounted at the top end of a hydraulic bracket, and comprising a mobile pressure-bearing mechanism, an automatic extension connecting groo...
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WO/2020/181672A1 |
Disclosed is an apparatus for protecting interference between a hydraulic support and a shearer cutting part. The apparatus comprises plurality of dustproof boxes uniformly fixedly arranged on the surface of the side of the traction part...
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WO/2020/177930A1 |
The present invention pertains to a method for monitoring operation of a mining machine unit (30), particularly of a longwall mining system (10), having a shield unit (32) connected to a material removing unit (12) by means of an actuato...
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WO/2020/173030A1 |
A smart coal caving method based on real time monitoring of variation in top coal thickness, using ultrawide-band radar and laser 3D scanning technology to monitor top coal thickness information in real time and automatically regulate th...
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WO/2020/170878A1 |
A joining means provided with a reception member and an insertion member to be inserted into the reception member, wherein: the insertion member has an insertion section to be inserted into a reception space and an insertion engagement s...
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WO/2020/172195A1 |
A system and method for simultaneous excavation and segment erection of Tunnel Boring Machine (TBM) by Thrust shell system is an invention in tunnelling industry which will provide possibility of erection of the segmental ring while TBM ...
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WO/2020/169356A1 |
The present invention relates to a rock bolt (100) having state monitoring for determining tensions or deformations in the form of a conductor track (104) attached to the bolt body (102), the electrical resistance of which conductor trac...
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WO/2020/171896A1 |
An underground support system having an underground reinforcement system that is at least partially encapsulated with concrete or a cement material. The underground reinforcement system includes a flexible wire mesh having a matrix of lo...
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WO/2020/171897A1 |
A tunnel reinforcement system having a plurality of structural supports positioned at spaced intervals along the length of a tunnel. Each structural support has a plurality of structural segments connected in an end to end relationship. ...
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WO/2020/165346A1 |
The invention proceeds from a method for mounting a roll of protective mesh material (10) to an underground rock drilling machine (12), in particular a drilling jumbo, comprising at least one boom (14, 16), preferably at least two booms ...
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WO/2020/163916A1 |
A rock bolt dolly (10) which connects a self-drilling rock bolt (300), to a rock bolting apparatus and transfers percussive energy applied to the dolly (10) by the rock bolting apparatus (50) to the rock bolt during installation of the r...
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