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Matches 1 - 50 out of 6,523

Document Document Title
WO/2018/176892A1
Disclosed are a network integrated and coordinated control system and method for thin coal seam comprehensive mining and gas control. By optimising shearer selection and mining method, efficient mining on a joint coal and rock working fa...  
WO/2018/183834A1
A method for repairing in-ground tunnel structures including the steps of: a) cleaning the structure to be lined; b) installing a suspension cable along the top of the tunnel; c) suspending sheets of liner composite along the suspension ...  
WO/2018/171255A1
Disclosed is a networked preferential gas migration passage (17) construction and gas diversion drainage method, applicable to active construction of a networked fracture passage inside a ceiling (13) where a hard ceiling (14) covers a c...  
WO/2018/171254A1
Disclosed is a stepped-type construction method for a preferential gas migration passage of a coal seam stope, particularly applicable to gradual construction of a gas migration passage inside and outside stope coal and rock mass of a de...  
WO/2018/166243A1
A method for determining size of and spacing of artificial ore pillars for room mining pillar recovery, comprising: dividing, in a room mining pillar recovery process, a process of supporting a roof with room mining pillars into a stage ...  
WO/2018/165213A1
A link for a conveyor chain includes a first portion and a second portion laterally spaced apart from the first portion. The first portion includes a first sprocket-engaging pin, and the second portion includes a second sprocket-engaging...  
WO/2018/161469A1
A coal bulk permeability enhancing method using heat injection performed by combining microwaves and hot air is disclosed. A borehole (2) is formed in a coal seam (1), a microwave antenna (4) is connected to a front end of a coaxial wave...  
WO/2018/165217A1
A conveyor chain includes first link, a second link, a connecting link, a first flight, and a second flight. The first link includes a first side portion and a second side portion. The first side portion has apertures and a first drive p...  
WO/2018/160087A1
´╗┐For determining a location of a potential emergency in an area, a wearable monitor is placed on a user present within the area, which detects a physiological parameter of the user and generates a first signal, subsequently communicate...  
WO/2018/158447A1
The present invention relates to a system intended to be fixed under the ceiling (Pf) of a building in order to lay flexible ducting (Gs) under the said ceiling and set the said ducting, the said flexible ducting (Gs) being of the type c...  
WO/2018/156001A1
The present invention describes a method for measuring and mapping the concentration of harmful and explosive gases present in confined spaces in mines. Said method combines one or more nodes with sensors for different environmental vari...  
WO/2018/156003A1
The present invention describes a method for mapping optimum personalised routes for safe evacuation, based on gas diffusion algorithms, using fixed nodes disposed on tunnel walls that measure atmospheric variables such as toxic gas conc...  
WO/2018/156002A1
The present invention describes a method for estimating the state of alertness and consciousness in relation to a percentage of carboxyhaemoglobin (COHb) in the blood of persons who work in enclosed spaces and are exposed to intoxication...  
WO/2018/152578A1
In an aspect, there is disclosed a system (100) for providing ventilation to a ventilated location (101) within a passageway (103). The system (100) includes: a duct (102) arranged to extend between an inlet location (104) to an outlet l...  
WO/2018/148838A1
Disclosed is a paste for use in mining processes, such as backfilling and cemented rock fill, to provide improved early and late-stage strength at a lower overall cost. The paste includes mine tailings, one or binding agents, engineering...  
WO/2018/145391A1
Disclosed is a dynamic water replenishing hole sealing method by means of a high water-absorbent resin, applicable to borehole sealing where extraction has a large influence on the borehole. The method comprises: seal two ends of a hole ...  
WO/2018/144336A1
Processes of consolidating aqueous compositions including fines and process water are disclosed. The processes include mixing the composition with a highly water soluble salt or an aqueous solution thereof to destabilize and consolidate ...  
WO/2018/137871A1
The invention relates to a working and recovery vehicle (1) that can be driven on a track for firefighting and/or the recovery of persons in tunnels or underground railways (16), having a drive unit (4), which can be operated without amb...  
WO/2018/132904A1
The invention discloses an automated material inventory and delivery system for underground mines using a shaft and hoist transporting material from the surface to working areas. The system includes means for automatically and paperless ...  
WO/2018/133435A1
Disclosed is a method for controlling air leakage in a goaf area during a shallow and close coal seam mining process. The method mainly comprises techniques such as surface air leakage fracture sealing and downhole air leakage channel de...  
WO/2018/132054A1
The present disclosure relates to a vehicular work machine (10) that is adapted for handling at least two different interchangeable tools (4). The machine (10) also comprises a user control device (11) and a water supply arrangement (31)...  
WO/2018/126371A1
Provided is a downhole detector, comprising a waterproof outer housing (1); the top of said waterproof outer housing (1) is provided with a suspension ring (2), the waterproof outer housing (1) is internally provided with a circuit chamb...  
WO/2018/126386A1
A downhole detector, comprising: a waterproof housing (1), a top portion of the waterproof housing (1) being provided with a lifting ring, while the waterproof housing (1) is provided therein with a circuit cavity (3) and a battery cavit...  
WO/2018/126589A1
Disclosed is a method for controlling wind pressure in a subway tunnel pressure relief hole, said method comprising the following steps: S1, a system collecting relevant parameters of a train, the parameters comprising train speed and tr...  
WO/2018/121107A1
A mine anti-explosion trapezoidal sealing wall and a construction method therefor, which are suitable for the situation that it's too late to construct a conventional sealing wall when thermodynamic disasters such as an explosion and a f...  
WO/2018/121035A1
A customized method for determining a coal mining face floor water inrush risk level belongs to the field of coal mining safety. The method comprehensively takes account of the following factors: a water pressure at a coal mining face fl...  
WO/2018/113227A1
Disclosed is an electrical pulse blockage-removal and permeability increasing method for a coal bed methane well that is suitable for efficient exploitation of a coal bed methane well, the blockage-removal and permeability increasing met...  
WO/2018/107932A1
A real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas, belonging to the field of mine safety and monitoring and control. The system is composed of an acoustic wave probe (1), an electrom...  
WO/2018/108223A1
A draining mesh module (1) for building into a construction, such as a tunnel wall, to provide draining channels in said construction, comprises at least one semi pipe (21) of a flexible material. The draining mesh module (1) has a longi...  
WO/2018/102924A1
The present invention discloses a safety devices adapted to prevent workers from going into hazardous environment, such as underground using the faulty safety device. As a safety device, typically embodied as a cap lamp, must be charged ...  
WO/2018/103304A1
Disclosed are a system and method for the fracturing and permeability enhancement of a coal body using an electrical pulse, which are applicable for improving the gas extraction rate of a low-permeability and high-adsorbability coal laye...  
WO/2018/103505A1
A compound inhibitor for preventing spontaneous combustion of coal and a preparation method therefor, the compound inhibitor comprising polyacrylic acid super absorbent resin, vitamin C and water, the mass percentage concentration of a m...  
WO/2018/099261A1
A stoping method for an oxygen-free working surface of a highly gaseous mine, comprising: aiming at a first coal seam of the highly gaseous mine which is not disturbed and a working surface (1) of which roof fissure of the coal seam is n...  
WO/2018/086505A1
A stampede preventing method for a pedestrian passage (3) in a confined space of a subway. Pedestrian flow sensors are arranged on the pedestrian passage (3), and are connected to a control console by means of data transmission lines; th...  
WO/2018/085891A1
A conveyor module (1), adapted to be releasably attached to at least one other conveyor module (1) to form a conveyor assembly (15). Each conveyor module (1) includes a substantially longitudinal main frame (4), said main frame (4) being...  
WO/2018/082201A1
Disclosed is a quick pressure relief gas discharge method for exposing an extra thick and soft projecting coal seam in a vertical shaft, comprising the following steps: designing drainage drill holes in several circles along a shaft exca...  
WO/2018/076492A1
Disclosed is a pulse detonation cracking and permeability-increasing method for a coal-bed gas well, applied to coal-bed gas well mining for a coal bed (1) with a low gas permeability. In the method, first, a positive-electrode coal-bed ...  
WO/2018/071965A1
A ventilating assembly for ventilating underground mines, the assembly comprising: a body defining an elongate passage for allowing flow of fluid therethrough, the passage being positioned relative to an inlet for receiving fluid and an ...  
WO/2018/073555A1
The present invention relates to a sealing system, its uses and method of use for forming a seal against a surface, and in particular for plugging and sealing an orifice such as a road or railway tunnel to prevent or minimise the dispers...  
WO/2018/075914A1
Apparatus for allowing ventilation for underground tunnels through a ventilation shaft opening to atmosphere yet preventing underground flooding from surface waters pouring through the grate comprises an assembly that fits within the ven...  
WO/2018/068866A1
The invention relates to an operation arrangement and a method for operating a mobile haulage arrangement for continuously conveying fragmented material in a conveying direction. The operation arrangement comprises a first and a second o...  
WO/2018/068409A1
Provided is a structure underlaid gob area filling expansion bag, comprising a film filling expansion bag (1). One end of the film filling expansion bag is provided with an opening; and a filling pipeline device (2) is arranged at the po...  
WO/2018/059734A1
The invention relates to a refuge chamber (1) for accommodating persons seeking protection, the refuge chamber (1) comprising a gas-proof, lockable door (2), through which an interior space (4) can be entered when the door (2) is in an o...  
WO/2018/058770A1
The present invention is applicable in the field of backfill mining under a coal mining shaft. Disclosed are a compacting shearer conveying machine and a compaction method. The machine comprises a compacting shearer (5), a transition she...  
WO/2018/058198A1
The present invention relates to a blasting system including blast holes for being blasted. Reporting means is provided for reporting the blast status of respective blasted holes. Advantageously, the reporting means reports the blast sta...  
WO/2018/058038A1
A system for measuring geometric change in a subterranean structure. The system includes an apparatus communicably couplable to a computing system. The apparatus is couplable to a mobile platform and includes a sensor configured to acqui...  
WO/2018/045632A1
A method for recycling room coal pillars by solid backfilling in coordination with artificial pillars, comprising: conveying a solid material (3) on the ground and a cementing material (4) to a room pillar gob (9) by means of a batching ...  
WO/2018/041348A1
The present invention relates to handling of dust-laden air in a mine tunnel and particularly to a mobile unit (10) for a mine tunnel comprising a dust extraction system (25) and a method of conveying material and removing dust in a mine...  
WO/2018/038658A1
The present invention relates to a working machine (10) comprising a receptacle portion (12) for accommodating load. The working machine is adapted to have a load receiving condition in which the receptacle portion (12) comprises an open...  
WO/2018/029051A1
The invention relates to a coating system for draining off water, more particularly for draining surfaces of building structures such as tunnels, the system having: (a) at least one hydrophilic layer; and (b) at least one hydrophobic lay...  

Matches 1 - 50 out of 6,523