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WO/2019/042106A1 |
Disclosed are a fire-proof material, a fire-proof plate, a firewall structure for tunnels and a construction method. The fire-proof material comprises the following components in parts by weight: 20-35 parts of aluminium silicate; 20-35 ...
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WO/2019/042026A1 |
Disclosed is a protection pipe for a gas-extraction surface borehole in a mining area. The protection pipe for a gas-extraction surface borehole in a mining area is arranged inside a gas-extraction surface borehole in a mining area. The ...
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WO/2019/035717A1 |
The invention describes a foldable tube (1) for transporting a fluid in a similar fluid of similar pressure comprising a tubular flexible material, a skeleton comprising at least one elongated guide (2) made of a non- stretch and flexibl...
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WO/2019/029178A1 |
Provided is a new gas control technology for a ground pressure-relief borehole in an abandoned coal mine. The technology achieves the purpose of comprehensive treatment and utilization of abandoned coal mine gas by adopting the process o...
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WO/2019/015362A1 |
Disclosed are a shallow seam water conservation mining method and an application thereof. According to the method, in a working face, a plurality of pre-bored tunnels is vertically or obliquely demarcated from a main transport tunnel (1)...
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WO/2019/013657A1 |
Method of spontaneous mining induced seismic events prediction based on continuous measurements of the rotational Rayleigh wave parameters within the frequency band from 0,05 Hz to 10 kHz and appropriate transforming them aiming for iden...
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WO/2019/010907A1 |
A closed circulation system for improving operating efficiency of a gas drainage pump. A liquid inlet of a pneumatic diaphragm pump (13) is connected to a liquid outlet of a polymer drag reduction solution tank (9); a liquid outlet pipe ...
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WO/2019/000839A1 |
The present invention relates to the field of mining engineering. Provided is a monitoring method integrating three aspects of data relating to strata control, comprising: downhole pressure observation, in which a pressure monitoring dev...
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WO/2018/236730A1 |
A control system (400) for a material gathering mechanism (108) includes a gathering head (118) configured to gather material from a ground surface, a plurality of gathering members (120) configured to transport the material gathered by ...
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WO/2018/233320A1 |
Disclosed are a coal mine underground reservoir and a multi-layer grouting-based anti-seepage reinforcement method for a reservoir dam, applicable to the field of coal mine underground construction. The method comprises: determining the ...
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WO/2018/227898A1 |
Provided are a physical-chemical complex retardant for controlling the spontaneous combustion of low-rank coal, a preparation method therefor, and the use thereof. The complex retardant consists of a chelate and attapulgite, wherein the ...
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WO/2018/227708A1 |
A coal mine safety monitoring method, the method comprising: receiving first safety data of a coal mine that is acquired by detecting devices (701) in different regions of the coal mine at a first acquisition frequency, the first safety ...
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WO/2018/220259A1 |
A drainage system of a tunnel for underground construction to be arranged on an upward wall and/or a roof of the tunnel is provided. The drainage system comprises a draining pipe for leading the water away. The drainage system further co...
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WO/2018/218378A1 |
The invention relates to distension techniques for neutralising the rock explosions that often occur during the construction of underground works located in environments exposed to high stress fields, such as caverns, main tunnels or bra...
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WO/2018/222062A1 |
The invention belongs to the field of chemistry and refers to an agent applied for fire extinguishing, fire protection, suppression of all types of absorbent and low absorbent dust and prevention of forming of ice and snow layers and the...
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WO/2018/220343A1 |
A heat exchanger having separate conduits through which heat exchange fluid and air may be flowed. The conduits are arranged so that heat can be exchanged between the heat exchange fluid and the air. A means for generating airflow in the...
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WO/2018/223028A1 |
Methods and systems of controlling a pitch angle of a shearer. A controller receives a sensor signal indicative of the pitch angle of the shearer, and receives a target pitch profile defining a plurality of target pitch angles for differ...
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WO/2018/214659A1 |
Disclosed is a novel process for controlling downhole gas in an abandoned mine. The process comprises the steps of 1) before an abandoned mine is closed, branching downhole drifts (1, 2, 3) are blocked, and steel pipe holes are prepared ...
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WO/2018/210614A1 |
In order to temporarily subdivide tunnels or tubes (31-33) of traffic routes (30) on which means of transport travel into individual sections, a separating element (10) is described, which is inflatable and fills the tunnel or the tube s...
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WO/2018/201706A1 |
The present invention applies to projects such as regional outburst elimination for coal roadway driving or for coal extraction, and discloses a method for efficient gas drainage in coal roadway strips and regional outburst elimination b...
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WO/2018/201714A1 |
Disclosed is an accurate extraction method for a coal mine gas, for improving the accuracy of coal mine gas extraction design and construction and ensuring borehole extraction efficiency. The method comprises: firstly, using a gyroscope ...
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WO/2018/203023A1 |
A ventilation device that enhances the effective longitudinal thrust of a fan assembly installed within a tunnel or other internal space. The nozzle trailing edge (6) is tilted so that it forms an angle (13) with respect to the fan centr...
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WO/2018/192066A1 |
A method for controlling a subsidence area caused by underground mining in an adjoining open-pit mine, applied in an open-pit and underground coordinated mining process. In the method, a ground subsidence area (7) caused by underground m...
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WO/2018/192067A1 |
A water disaster prevention and treatment design method for a mine taking a coal bed as a main aquifer. By determining the water discharge amount of a working face water discharging system, whether working face partial syncline exists, a...
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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 ...
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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...
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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 ...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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