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WO/2021/097236A1 |
Systems for forming or extending a tunnel or shaft within a working surface may include a ram accelerator assembly for accelerating a projectile into geologic material to weaken a region of the geologic material. A cutting tool may then ...
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WO/2021/086283A1 |
The present invention relates to a system that shall enable preparation of excavation plans that shall perform lignite production with minimum standard deviation in the ideal quality value for preventing performance fluctuation and incre...
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WO/2021/081399A1 |
A housing mount assembly for supporting a roller cutter is described. The housing mount assembly comprises a housing mount defining an outer surface for attaching to a housing and a profiled inner surface extending away from the outer su...
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WO/2021/077692A1 |
A tunneling, supporting and anchoring all-in-one machine system capable of implementing underground speedy drivage and a use method thereof. The all-in-one machine system comprises a longitudinal axis type tunneling machine body (1), whe...
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WO/2021/080462A1 |
A device for producing water mist in a coal mine is claimed. The technical result is increased operability of the device. The device for generating water mist in a coal mine consists of dismountable portable filters for cleaning water an...
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WO/2021/074242A1 |
Disclosed is a link (100) for a removal chain (8) for a ballast removal device (4) below a railway track (2), the link (100) comprising a member (101) that extends longitudinally between a front end (110) and a rear end (120) and is pene...
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WO/2021/074247A1 |
Disclosed is an articulated assembly (10) of two links (100, 101, 102) for a ballast removal chain (8), a first (101) of the two links (101, 102) comprising a single-piece member (101') having two flanges (110a, 110b) which are parallel ...
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WO/2021/069154A1 |
The invention relates to an underwater dredging device having a base frame, which can be placed on the bed of a body of water, at least one dredging unit, which is supported in a vertically displaceable manner on the base frame and is de...
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WO/2021/068691A1 |
A strong-weak-strong clean mining and full filling method for a coal mine. The method is particularly suitable for coal mining of "three-under" pressure coal in a coal mine having a difficulty in mine water treatment. A coal body to be m...
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WO/2021/068503A1 |
Disclosed is a method for automatically controlling the traction speed of a coal cutter on the basis of a coal wall caving degree, relating to the technical field of coal cutter control. The control method comprises: an image collection ...
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WO/2021/071353A1 |
The present invention relates to a method for covering open mine area in the mitigation of abandoned mine drainage formation and a system thereof. Accordingly, the method (100) includes: a) providing a plurality of modular panels (110); ...
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WO/2021/063510A1 |
A replacement kit for a work machine, and a method of replacing a hydraulic harness. The replacement kit comprises a replacement kit (100) for a work machine, comprising at least one bundle (1) of hydraulic hoses (2), the bundle comprisi...
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WO/2021/058128A1 |
The present invention pertains to a drive connection for coupling an engine to a gearbox of a machine and which provides a fluid-tight sealing. Accordingly, a drive connection (10) for coupling an engine to a gearbox of a machine is sugg...
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WO/2021/058249A1 |
This disclosure relates to a cutting assembly (10) for a rock excavation machine. The cutting assembly comprises a base unit (12), one or more moveable support arms (14) extending from the base unit, a drive spindle (16) rotatably mounte...
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WO/2021/061103A1 |
The present disclosure relates to a pulsed-power drilling system that includes downhole mixers for restoring optimal electrical properties in drilling fluid. The downhole mixer may include a housing having an uphole and downhole end, a c...
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WO/2021/047580A1 |
A method for rotary removing of materials in a material stripping rack of a mining machine and a device for rotary removing of materials in a material stripping rack for implementing the method. The device for rotary removing of material...
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WO/2021/048023A1 |
Method, device and system for managing a mining facility (150 A-N) including a plurality of systems is disclosed. The method comprises generating, on a simulation unit (102, 330), system models (210, 220, 230, 240) for one or more system...
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WO/2021/044914A1 |
A measurement system 50 measures the quality of excavation material generated from an underground tunnel based on a mining plan for a mine planned on the basis of first quality data measured with an advance geological survey, and first p...
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WO/2021/034433A1 |
A retainer sleeve (400) includes an at least partially annular body (402) defining an axis of rotation (404), a radial direction (406), and a circumferential direction (408). The body (402)may also have a radially inner annular surface (...
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WO/2021/031561A1 |
A tunneling-free and coal pillar-free mining and construction method wherein a coal mine field is not divided into mining areas. An upper main tunnel (1) and a lower main tunnel (2) are respectively arranged at upper and lower parts of a...
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WO/2021/028383A1 |
The invention relates to an underground drilling rig (10) and to a method for erecting same, wherein the method, in one specific embodiment, comprises erecting a mast structure (20) of the drilling rig (10) starting from a horizontal tun...
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WO/2021/016884A1 |
An open-air hydraulic rock drilling machine based on a loader (5). The open-air hydraulic rock drilling machine comprises a loader (5), a big arm device (2) is mounted at a front axle position of the loader (5), the big arm device (2) is...
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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/2021/012101A1 |
A constant-pressure propulsion system for a rock drill rig, comprising a hydraulic motor, a propulsion hydraulic cylinder, an impactor hydraulic cylinder, a rotation pressure sensor, a propulsion pressure sensor, a rotary oil line electr...
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WO/2021/008212A1 |
A high-pressure water-powered precise coal crushing and filling mining method in an inclined coal seam, comprising a coal crushing system, a transportation system and a pipeline filling system. High-pressure water is used as power to gen...
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WO/2021/007960A1 |
Provided is a rational width determination method for a gob-side entry driving narrow coal pillar based on crack evolution. The method comprises five steps of: observing roadway deformation and coal pillar crack distribution characterist...
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WO/2021/008703A1 |
The present invention relates to a conveyor belt arrangement (10) for feeding material to at least one discharge (30) or bunker (2), wherein the conveyor arrangement comprises at least one belt (1) and a guiding system (11) for guiding t...
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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/2021/003772A1 |
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/2020/257877A1 |
The invention relates to a method of monitoring the movement of an ore body (202) resulting from blasting, the method comprising: positioning a plurality of blast movement monitors (206) in a blast zone in the ore body (202), each of the...
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WO/2020/263131A1 |
The invention relates to methods for monitoring the condition of rock-cutting tools. The technical result consists in reducing the cost of operating rock-cutting tools by providing reliable monitoring of the condition of said tools witho...
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WO/2020/260763A1 |
The invention is related to a method for removing water from sphagnum moss (1), wherein - sphagnum moss (1) is fed to feed equipment (14), - sphagnum moss (1) is fed with at least one mobile feed wall (18) of a feed trough (15) serving a...
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WO/2020/259866A1 |
The invention relates to a milling bit for a ground milling machine, a bit holding system, a milling drum and a ground milling machine.
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WO/2020/259867A1 |
The invention relates to a bit holding system comprising a milling bit, a bit holding system and a clamping device, in particular a clamping screw. The invention also relates to a milling bit for a ground milling machine with a bit holdi...
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WO/2020/244406A1 |
A splitting rod (5) of a rock splitting machine, wherein the main body of the splitting rod (5) is made of a flexible material. In operation, pressurized liquid acts on the inside of the flexible splitting rod (5), and the splitting rod ...
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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/2020/220066A1 |
A tool holder assembly (200) includes a mounting block (210), a tool support member (230), and a fixed orientation cutting tool (250). The mounting block (210) has a first cavity (218) extending into the mounting block (210). The tool su...
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WO/2020/223189A1 |
A bolster for a degradation pick includes a transverse cross section that is non-circular. Non-circular cross sections include square, triangular, hexagonal and other shapes. The bolster is made from a wear and/or erosion resistant mater...
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WO/2020/215710A1 |
A cutting pick for a coal cutter and a machining method therefor. The cutting pick for a coal cutter comprises a connection shaft portion (1) and a cutting top cap (2), the connection shaft portion (1) and the cutting top cap (2) being i...
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WO/2020/215478A1 |
Disclosed are an air-and-spray curtain device and a method for controlling and removing dust for a fully mechanized mining working face through suction, induction and convection. The device comprises dust-cleaning extraction fans (6), se...
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WO/2020/211784A1 |
A non-pillar automatically formed roadway-based mining method applicable to fully mechanized top-coal caving of a thick coal seam, comprising: reinforcing and supporting a roof and two sides of a roadway; slotting and blasting a construc...
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WO/2020/211289A1 |
A deep-sea polymetallic nodule mining operation system comprises a mining platform (1), an ore lifting riser system (2), a mining robot (3), and a bottom-supported ore transfer and processing center (5). The ore lifting riser system comp...
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WO/2020/211298A1 |
A water-conserving mining method employing a segmented grout curtain for an aquifer. An aquifer (4) and a coal seam are comprised. The method comprises the following steps: a, acquiring basic geological parameters, performing mining engi...
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WO/2020/200834A1 |
The present invention relates to a method and an apparatus for operating a conveyor system having at least two excavation and/or conveyor devices (100, 105, 120), for the removal of free-flowing material excavated from an excavation site...
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WO/2020/200835A1 |
The present invention relates to a method and a device for the automatable operation of a material extraction plant at a face (130) of a material extraction site, wherein the material extraction plant comprises at least one mobile and mo...
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WO/2020/204803A1 |
The invention pertains to a method for controlling operation of a hydraulic system of a mining machine (100). Said hydraulic system comprises an electric motor configuration (230, 231, 232), a variable displacement pump configuration (24...
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WO/2020/192078A1 |
A method for the radial mining of opencast end slope remnant coal, comprising: arrangement of L-shaped main caverns (6, 13) or a U-shaped main cavern (11) and radial mining. Branch caverns (4, 9, 10) are formed by excavation from the L-s...
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WO/2020/192055A1 |
A two-step grouting modified water-protective coal mining method for roof aquifers, comprising a coal seam and an aquifer located above the coal seam, and the specific steps implemented being: acquiring a parameter; obtaining a first spa...
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WO/2020/187428A1 |
This disclosure relates to a cutting assembly for a rock excavation machine with integrated sensors. The rock excavation machine comprises a base unit, one or more moveable support arms extending from the base unit, a drive spindle rotat...
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