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Matches 1 - 50 out of 65,896

Document Document Title
WO/2021/062483A1
A liquid hammer drill comprising: a housing; a drill bit at a leading end of said housing wherein said drill bit includes a trailing end and a leading end that defines a cutting portion; a piston member located inside said housing and ha...  
WO/2021/058817A1
An apparatus, rock drilling rig, method and computer program for executing navigation for a rock drilling rig in a mine tunnel. The rock drilling rig (5) is positioned at faces (9) of rounds (8) and is navigated before initiating drillin...  
WO/2021/056959A1
A communication tunnel boring machine comprises a pipe section crane trolley (3). A pipe section conveying device (1) is provided on one side of the pipe section crane trolley. A rear supporting system is provided on the other side of th...  
WO/2021/061043A1
Reinforcement of a volume of rock by pre-bolting, comprising: providing a top hammer drilling machine (1, 6) for automatic feed of and drilling with a plurality of drilling modules (2, 3), initially loading (12) the top hammer drilling m...  
WO/2021/056062A1
A drilling and bolting dolly driving a drill rod in a first phase of a rock bolting operation and driving a nut of a rock bolt in a second phase of the rock bolting operation. In a preferred form, the dolly is adapted for engagement with...  
WO/2021/051474A1
A wet-type stirring and guniting all-in-one machine, comprising a driving device, a vertical stirring device A (100) and a vertical stirring device B (200) of the same structure, a slurry air conveying pipe (19), a control system (28), a...  
WO/2021/052192A1
A high stress rock burst roadway bolt, comprising a sectional bolt rod body (1), a bolt tail lock, a force transmission tray (3) and a sleeve (4). The sectional bolt rod body is provided with protrusions at intervals, and the tail end of...  
WO/2021/013838A3
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...  
WO/2021/047748A1
A connection device (1) for suspending a monorail beam, wherein the connection device (1) comprises a top anchor (2) integrated with a roof bolt or attachable to a roof bolt, wherein the connection device (1) comprises a clamping device ...  
WO/2021/047328A1
A method for determining the maximum strain for wellbore instability breakage, comprising the following steps: (1) constructing a simulation calculation model to calculate the plastic limit strain of a rock mass; (2) constructing a refin...  
WO/2021/045722A1
A system for mining material in an underground tunnel, comprises a rail on the roof of the tunnel. A tram is supported on the rail and is movable along the rail. The tram has a conveyor for moving material along the length of the tram. M...  
WO/2021/044629A1
An image processing system (1) is provided with: an image division unit (12); an image extraction unit (13); and an equipment image identification unit (15). The image division unit (12) divides an image of a structure including an image...  
WO/2021/045751A1
Methods of sculpting a hard material. An example method includes providing a pulsed power apparatus comprising: an articulated arm; a pulsed power drill bit comprising two electrodes and coupled to the articulated arm; and a power genera...  
WO/2021/042832A1
An active sorting muck-collecting device for a slurry balancing shield comprises a sorting stirring drum, a circulation pipeline (30), and a muck collection container (40). The sorting stirring drum comprises an external drum (10) and a ...  
WO/2021/044903A1
A tunnel excavator 1 according to one embodiment includes a cutter drum 5 and a door 7. An opening 5a for entering into the cutter drum 5 is provided in an inner wall 53 of the cutter drum 5. The door 7 is fixed to the inner wall 53 by w...  
WO/2021/042858A1
An overturning working platform and a tunneling equipment. The overturning working platform comprises: a main platform (10), rotationally provided with respect to a machine body (70) of a tunneling equipment; an overturning driving piece...  
WO/2021/038404A1
A rock bolt assembly includes a first section made substantially from carbon steel (12) and a second section (14) made from high strength, austenitic steel with a manganese content in the range of 10% to 24%. The second section has an ul...  
WO/2021/040599A1
A mining machine (102) for rock excavation, comprising: a rotatable cutting head (104) having cutting elements (108); a holder (110) for holding the cutting head (104); a movable thrust unit (112) attached to the holder (110); a machine ...  
WO/2021/031621A1
A magnetic control material-based, magnetorheological, pilot operated safety valve for a hydraulic support, and a use therefor. The magnetorheological pilot operated safety valve comprises a valve body, a valve core, a return spring (24)...  
WO/2021/027292A1
A roof deformation high precision monitoring and early warning system, comprising explosion-proof optical fibre sensors (6), a sensor integration apparatus, a signal conversion apparatus, a data transmission apparatus and a data processi...  
WO/2021/026971A1
A lattice composite wellbore structure and a construction method therefor. The lattice composite wellbore structure comprises outer wellbores and an inner wellbore (1) provided therein. An outer wall of the inner wellbore (1) is connecte...  
WO/2021/023665A1
The invention relates to a system for securing an anchor (40) in a borehole in a mineral substrate, in particular concrete, mortar, or brickwork, comprising an anchor (40) with a core section and a threaded section and comprising a furro...  
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...  
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...  
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), ...  
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...  
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...  
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...  
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)...  
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...  
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...  
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...  
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;...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO/2020/236034A3
The invention relates to mining and tunneling equipment for sinking and constructing vertical shafts. The technical result consists in reducing the downtime of the claimed machine for increased productivity and increasing the ease and sa...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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.  
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 ...  
WO/2020/208006A3
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...  

Matches 1 - 50 out of 65,896