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WO/2020/056153A1 |
A cutting assembly is configured to be coupled to a drum that is rotatable about an axis. The cutting assembly includes a block having a leading surface and an inner surface. The inner surface forms a block bore extending along an axis t...
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WO/2020/052012A1 |
A construction method for a continuous mining machine having a device continuously providing provisional roof support. A continuous mining machine (6) is comprised. The continuous mining machine (6) further comprises a device continuousl...
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WO/2020/048094A1 |
A method of recovering a room-and-pillar coal pillar by using external replacement supports. In the recovery of a room-and-pillar coal pillar, a cement material wall (3) is formed by performing pouring around a coal pillar (1) having a w...
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WO/2020/047605A1 |
The present invention relates to a mining system. The system includes a continuous miner for forming plunge tunnels from a roadway. A flexible conveyor system is coupled to the continuous miner for conveying mined material from the plung...
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WO/2020/048095A1 |
Disclosed is an internal injection replacement support room type coal pillar recovery method. In the process of room type coal pillar recovery, room type coal pillars (1) with an aspect ratio greater than 0.6 are divided into reserved co...
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WO/2020/043529A1 |
The invention relates to a wear control device for a milling machine having a milling roller, said device comprising a temperature measuring device and an evaluation device. The temperature measuring device is designed to determine, in a...
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WO/2020/034023A1 |
A system and method for dry ablation beneficiation of ore. The system comprises a nozzle to emit an air stream, and a feeder to provide ore particles for entraining in the air stream and colliding. The ore comprises gangue grains bound t...
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WO/2020/029803A1 |
A cutting apparatus of a tunneling machine, comprising: a shaft (1); a cutting component (2) that is provided with a pore channel (3) extending towards the shaft (1); a threaded fastening member (4) that runs through the pore channel (3)...
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WO/2020/028943A1 |
A slope monitoring system for monitoring deformation of a wall or slope from a virtual point of view comprising a slope monitoring device that directs signals at a slope or wall and compiles a point cloud of direction data, range data an...
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WO/2020/023928A1 |
A cutting device support for a mining machine includes a ranging arm, a bracket positioned adjacent an end of the ranging arm, and a thermally-expandable coupling member positioned between the bracket and the ranging arm. The coupling me...
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WO/2020/023771A1 |
A cutting assembly is provided for a rock excavation machine having a frame. The cutting assembly includes a boom, a cutting device, and a plurality of fluid actuators. The boom includes a base portion and a movable portion. The base por...
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WO/2020/016716A2 |
A pumping system for pumping a medium is described. The system comprises: at least one transverse pressure exchange chamber, but preferably multiple pressure exchange chambers. Each pressure exchange chamber has a valve arrangement at ea...
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WO/2020/014747A1 |
The present invention relates to a system for recovering a continuous miner arrangement from a tunnel. The system includes a coupler for coupling the continuous miner arrangement to a pulling apparatus. The pulling apparatus pulls the co...
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WO/2020/015958A1 |
A roller cutter having a spindle (2) on which a cutting ring (4) is rotatably mounted by means of a bearing device (10, 12) that is sealed off from the surroundings by means of a sealing device (28, 30) is characterized in that any diffe...
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WO/2020/010696A1 |
Provided is a method for recovering room coal pillars through reserved roadway cemented filling, especially suitable for safe and efficient recovery of residual coal pillars in a room mining face in ecologically vulnerable mining area in...
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WO/2020/006816A1 |
A three-dimensional space dust control and removal method for dust produced during bracket motion of a fully mechanized mining face. Different dust-proof measures are taken for upper, middle and lower spaces of the fully mechanized minin...
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WO/2020/000054A1 |
A mine and a mining method for an open pit mine operate with drill rigs, down- hole measurement vehicles, explosives delivery vehicles, and initiation system vehicles that can be operated by personnel in vehicle cabins or tele-remotely o...
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WO/2019/240531A1 |
The present invention relates to a low vibration tunnel excavation method. The low vibration tunnel excavation method according to a first embodiment of the present invention comprises the steps of: boring a cut hole and a plurality of b...
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WO/2019/227147A1 |
A method and system for mine design utilising mathematical modelling and optimisation based on mathematical modelling of connected bubbles. A mathematical model, based on mathematical modelling of behavior of connected bubbles, is applie...
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WO/2019/227852A1 |
A fracture relieving method for stress concentration of a pillar left in an overlying goaf. The method comprises: first, fracturing a top plate directionally to optimize the stress of the top plate to reduce the source of a force; second...
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WO/2019/226646A1 |
An adapter board (12000) for use with a blade assembly (13000) includes a lower tool bit attachment portion (12002), terminating in a lower adapter board free end (12004), the lower adapter board free end (12004) defining a bottom surfac...
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WO/2019/224801A1 |
This invention relates to a mining apparatus comprising 10 a self-propelled vehicle unit 12 that includes a suitable tool 14 located at an operative front end of the vehicle unit 12 for performing work on a mine face 16 by operatively re...
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WO/2019/218546A1 |
A mining method for an inclined medium-thick ore body. Stopes are arranged along the trend, the length is 55 m, the width of an ore body (14) is equal to the horizontal thickness of the ore body (14), the height of a middle section is 40...
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WO/2019/213749A1 |
According to embodiments described in the specification, an exemplary method is disclosed for hydraulically hoisting potash (or other evaporite ore) 'fines' material from an underground mine. The method includes mining an ore deposit usi...
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WO/2019/213989A1 |
An engineering rock mass high-power microwave in-hole cracking device, comprising a high-power microwave generator, a high-power microwave coaxial heater, high-power low-loss microwave coaxial transmission lines, and a microwave power ad...
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WO/2019/210881A1 |
A reciprocating impact bevel discharging shovel of a reciprocating impact mining machine, comprising a reciprocating impact box and a reciprocating impact bevel discharging shovel (1). The reciprocating impact box comprises a reciprocati...
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WO/2019/204900A1 |
A precision mining system having mining equipment manipulable to recover material with mineral resources, the system comprising: an image sensor for capturing real-time imagery of a geographical location having material with mineral reso...
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WO/2019/205558A1 |
Disclosed are a method and device for controlling top coal caving performance by means of pulse hydraulic fracturing. The device comprises a hydraulic fracturing pump set (7), a high-pressure rubber hose (8), a packer (6) and a high-pres...
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WO/2019/205227A1 |
Disclosed is a flexible shield support mining method for a steeply inclined coal seam. The method comprises: installing a flexible shield support (1), injecting water into a coal wall of a coalface (8), exploding the coalface, and removi...
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WO/2019/205515A1 |
The invention relates to the field of coal seam gas extraction. Disclosed is a method of extracting gas from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A horizontal well drilling and reaming sub...
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WO/2019/205472A1 |
Provided are a controllable pressure jetting apparatus based on a hydraulic energy accumulator and a jetting method. The jetting apparatus comprises a pressure storage system, a pressure holding system, a sealing system and an injection ...
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WO/2019/204595A1 |
A method for transporting material from a hard rock mine having a plurality of benches extending downwards from a surface of the mine. An extendable conveyor system having a head disposed at or near the surface of the mine and a tail dis...
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WO/2019/201536A1 |
The invention relates to a milling pick, in particular a straight shank pick with a pick head (40) and a pick bit (30) consisting of a hard material, wherein the pick bit (30) comprises a fastening region where it is connected to the pic...
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WO/2019/201534A1 |
The present invention relates to a milling pick, in particular a straight shank pick with a pick head (40) comprising a pick bit (30) made of hard material as the cutting element, wherein a pick shaft (10) is further coupled directly or ...
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WO/2019/201535A1 |
The invention relates to a milling pick, in particular a round-shank pick, having a pick head and a pick tip, consisting of a hard material, wherein the pick tip has a fastening region, in which it is joined to the pick head, wherein the...
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WO/2019/203731A1 |
An aspect of the present invention relates to a method of mining in a rock formation, comprising: drilling blastholes extending into the rock formation, each of the blastholes having a depth between a first end and a second end, wherein ...
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WO/2019/200210A1 |
An orientation plate (9000) configured to orient a tool bit (5000, 6000, 7000) relative to the centerline (CL) of an adapter board (102) comprises a rectangular body (9001) defining a top surface (9006), a bottom surface (9008), a front ...
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WO/2019/196991A1 |
The aim of the invention is to reduce the loading of the bearing of disk-shaped drill bits and roller bits caused by impact and vibratory stress produced, e.g. by pneumatic and hydraulic hammers of rock breaking machines or similar machi...
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WO/2019/194706A1 |
The invention relates to neutralization of drilling wastes and can be used for disposal of drill cutting wastes. The well-drilling sludge disposal method includes drilling sludge separation from drilling fluid and drilling sludge disc...
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WO/2019/184257A1 |
A coal mining method for rotatably mining coal on an open pit slope using fully-mechanized coal mining equipment, using a fully-mechanized complete set of coal mining equipment for mining coal on an end slope of an open pit coal mine. Sa...
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WO/2019/184147A1 |
A method for efficiently preventing impact ground pressure for a low gas-permeability coal seam, comprising the following steps: step I, measuring the coal mechanical property; step II, determining the highest gas injection pressure for ...
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WO/2019/186430A2 |
This invention relates to a scrubber and more particularly, but not exclusively, to a scrubber for scrubbing a gas or air stream. The scrubber includes a scrubber body with a flow path between an inlet and an outlet of the body. At least...
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WO/2019/185160A1 |
A flexible material handling apparatus adapted to be installed on a full face heading machine is provided, comprising a material handling member and a linkage member coupled together in a head-tail manner by a joint connection, the linka...
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WO/2019/178838A1 |
Disclosed is a method for laying out a minefield suitable for fluidized mining of coal resources. A main shaft (1) and a ventilation shaft (2) are respectively provided in a minefield region, with the bottom of the main shaft being locat...
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WO/2019/178835A1 |
Disclosed are an automatic coal mining machine and a fluidized coal mining method. A first mining chamber (1) cuts a coal seam to obtain raw coal, and conveys same to a first coal-cleaning chamber (2) to separate coal blocks therein from...
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WO/2019/180170A1 |
This disclosure relates to a cutting assembly comprising a circular disk cutter (18). A plurality of cutting elements (22) and a corresponding quantity of tool holders (24) are arranged around a circumferential surface of the disk cutter...
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WO/2019/180164A1 |
This disclose relates to a cutting assembly (10) for mining comprising a disk cutter (18), which is moveable between horizontal and vertical cutting orientations.
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WO/2019/180554A1 |
The invention relates to a pick sleeve (10) including a head (12) and a shank (14). The head (12) includes a central part (20) and a bearing member (22) which is secured to the central part (20). The bearing member (22) is separable from...
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WO/2019/180169A1 |
This disclosure relates to a cutting assembly for mining or extraction. The cutting assembly comprises a circular disk cutter (18). Cutting elements are arranged around a circumferential surface of the disk cutter, each seated in a tool ...
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WO/2019/174189A1 |
A dynamic recognition and control parameter correction system and method, comprising a data collection module, an online dynamic model recognition module for a permanent magnet short-range system, a control parameter correction module, a...
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