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WO/2021/022338A1 |
A friction stabilizer for supporting a rock ceiling in an underground mining environment is disclosed. The friction stabilizer has an external sheath and an internal rod. The internal rod is about 15% of the length of the external sheath...
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WO/2021/018390A1 |
A cutter head for excavating hard rock materials in rock face, comprising: a carrier that is attachable to a cutter arm of a cutter machine; and a drive shaft rotatably supported by the carrier, the drive shaft being rotatable about a dr...
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WO/2021/017451A1 |
A TBM-carried full-automatic sampling device and method. The TBM-carried full-automatic sampling device comprises a base (2), a mechanical wheel mechanism (5), a conveying mechanism (6), a drying mechanism (7), a printing mechanism (8), ...
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WO/2021/016657A1 |
The present invention relates to long wall mining, and, in particular, to components that facilitate the introduction and/or installation of liners, like geosynthetics or the like, into longwall mines. One such component is a guide inclu...
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WO/2021/013838A2 |
The invention relates to a drill head for creating a substantially vertical borehole in the ground, comprising: a body, which can be connected to a rotational drive of a drilling device; drilling tools, which are arranged on the body, fo...
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WO/2021/013186A1 |
A test device for simulating earth-filling and grouting, comprising a grouting system (1), a test bench cavity (2), a bottom plate (3), and an information monitoring device (4). The grouting system (1) is connected to the test bench cavi...
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WO/2021/012021A1 |
The present invention provides a rock bolt comprising first and second portions (11, 12), wherein the first portion comprises an end (13) adapted for expansion to provide a point anchor. The second portion comprises an inner portion (35)...
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WO/2021/008772A1 |
A package (100) of steel wire mesh comprises a steel wire mesh. The steel wire mesh has consecutively along its length direction a first section (102), a second section (104) and a third section (106). The first section is coiled thereby...
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WO/2021/008773A1 |
A roll of chain link steel wire mesh comprises marks provided according to a regular pattern over the surface of the steel wire mesh. The marks are provided by tape attached to the chain link steel wire mesh. A method to manufacture such...
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WO/2021/008771A1 |
An apparatus for unwinding a roll of web-like material comprises three shafts, wherein a first shaft, a second shaft and a third shaft. The three shafts are provided for holding a roll of web-like material in between, in contact with and...
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WO/2021/008387A1 |
An anchor rod and anchor cable stirrer, comprising: a stirring assembly (10) which comprises a stirring shaft (11) and a connecting part (12) provided at one end of the stirring shaft (11) and connected to an anchor rod and anchor cable;...
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WO/2021/005174A1 |
The present invention relates to equipment (6) for mounting a mucking pipeline (1) for a tunneling machine comprising: - a first support (10), configured to receive a first section (3) of the mucking pipeline (1), a second support (20) r...
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WO/2021/003771A1 |
A design method for a mine without leaving coal pillars and without roadway tunneling, comprising the following steps: forming a main shaft (1) and an auxiliary shaft (2) from the ground to a coal seam; developing a first connecting road...
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WO/2021/005170A1 |
The present invention relates to a connector for a spoil pipe of a tunnel boring machine, comprising: - a connector (7) having a first end (8) configured to be fitted and attached to the flexible tubing (4) of the spoil pipe (1) and a se...
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WO/2021/006802A1 |
A nozzle (5) for injecting a multi-component mixture into a rock hole, wherein the mixture is adapted for securing a bolt in the rock hole. The nozzle (5) comprises first and second channels (31, 33) adapted to receive a first respective...
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WO/2021/003772A1 |
A method for coal mining without reserving a coal pillar and a tunneling roadway in a whole mining area, comprising the following steps: opening a main shaft (1), an auxiliary shaft (2), and a return air shaft (3) from the ground to a co...
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WO/2021/006352A1 |
A reinforced concrete structure which is obtained by sequentially providing the surface of a concrete structure with at least a reinforcement layer and a protective layer. The reinforcement layer has a structure wherein a glass fiber she...
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WO/2021/000789A1 |
A pipeline annular self-traveling guide apparatus and method. The pipeline annular self-traveling guide apparatus comprises an inner annular groove (10) and an outer annular groove (20); a first pipeline fixing component (30) is provided...
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WO/2020/259059A1 |
A TBM parallel heading tunnel trunk construction method. Parallel heading tunnel trunk construction comprises parallel heading station section construction, parallel heading TBM preparation tunnel, starting tunnel and receiving tunnel co...
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WO/2020/259266A1 |
A mining double-layer borehole wall having root-type anchoring, comprising a double-layer borehole wall and anchoring components (6), a first end of each anchoring component (6) being disposed in surrounding rock (1), a second end thereo...
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WO/2020/260343A1 |
A tunnel for mounting above a road surface (3) comprises a plurality of tunnel segments (1). Each tunnel segment is adapted for mounting at least one projector (6) therein, above a respective opening formed by the tunnel segment in a cei...
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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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