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Matches 1 - 50 out of 6,644

Document Document Title
WO/2019/136765A1
Disclosed is a typical dynamic coal mine disaster early-warning service method based on an SaaS mode. The method belongs to the field of coal mine safety, and comprises the following steps: deploying disaster early-warning server softwar...  
WO/2019/137073A1
Disclosed is a multi-stage pressure bearing permeable hole sealing method, comprising thefollowing steps: 1) performing multi-segment expansion hole sealing at a position to be sealed in a borehole, wherein the number of segments for exp...  
WO/2019/127330A1
Disclosed is a coal mine safety monitoring system. The system comprises an uphole part and a downhole part, the uphole part comprising a power source lightning arrester, a monitoring host and a standby monitoring host connected to a powe...  
WO/2019/119933A1
Disclosed is a method for protecting/purifying water by recharging iron-containing sewage into a stratum destroyed by coal mining. According to the method, iron-containing sewage recharging holes and oxygen-containing water/weak alkali w...  
WO/2019/114338A1
Provided is a safe blocking method for an excavation disturbance area of a high-level waste disposal repository roadway. Multiple groups of seal sections (3) are excavated on an original high-level waste disposal repository roadway wall ...  
WO/2019/114224A1
A bag-shaped filling structure for an underground coal mine and a use method therefor. The bag-shaped filling structure for an underground coal mine comprises a truss beam wall (3), a surface sealing layer of a bag-shaped structure, and ...  
WO/2019/116725A1
This control system for use during a tunnel fire comprises: measurement means 100l to 100n which are each placed in a plurality of management sections set in a tunnel and measure the gas concentration and/or the smoke concentration in th...  
WO/2019/109602A1
A short-face coal-pillar-free mining method having zero gangue discharge, applied to zero discharge gangue processing in a mine. The method comprises: selecting, according to actual scenarios of a mine, a region near a mine shaft, and ar...  
WO/2019/109654A1
Disclosed is a combined automatic explosion suppression method for a gas discharge pipe. The method specifically comprises the following steps: preparing an explosion suppression installation pipeline; connecting the installation pipelin...  
WO/2019/109535A1
Disclosed is a clean and efficient coal mining method, applicable to the field of solid mine waste processing. The method comprises: setting the width of short section work faces (11, 12) according to an amount of solid waste discharged ...  
WO/2019/105162A1
A microbial modification filling-based coal mining method, comprising the operation steps of performing ground microbial calcification on a filling material, conveying the calcified filling material to a goaf for tamping and filling, and...  
WO/2019/105161A1
A bedding borehole-based gas extraction method capable of avoiding air leakage, comprising two stages, i.e., building a main gas extraction system and building an auxiliary gas extraction system: firstly, a main gas extraction pipeline (...  
WO/2019/103521A1
A power supply device for tunnel construction, according to one embodiment of the present invention, comprises: a housing; a high voltage bushing provided on the outer surface of the housing and receiving high voltage power; a primary tr...  
WO/2019/099375A1
A chemical discharging fan system has a ducted fan adapted and configured to generate a flow of air from an inlet of the fan into a duct of the fan and through the outlet of the fan. A spray gun is arranged on the fan in the flow of the ...  
WO/2019/085001A1
A water drainage system and method. The water drainage system comprises: a water pump set (11, 21) provided with at least two water pumps, a control mechanism (12, 22) for controlling the operation of the water pump set (11, 21), and at ...  
WO/2019/085052A1
Disclosed is a method for filling coal mining to recover a residual coal pillar and controlling stability of a waterproof key layer. A cement-filling pumping device is arranged in a tunnel formed by a mined coal chamber; goafs at two sid...  
WO/2019/080219A1
A method for using a coal mine underground tunnel for compressed air energy storage: first reconstructing the cross section of the tunnel, specifically comprising: implementing high pressure grouting reinforcement of the rock mass surrou...  
WO/2019/075884A1
A coal mine down-hole borehole penetration improvement method based on controllable shock wave technology comprises: pushing a controllable shock wave generation apparatus (3) into a borehole; after a hole opening sealing device (4) is i...  
WO/2019/075885A1
Disclosed is a method of reforming a coal-bed gas well employing controllable shock waves in combination with surge water injection pressurization. The method comprises the following steps: 1) installing a wellhead four-way joint (1) and...  
WO/2019/072183A1
A coal seam secondary anti-reflection device by means of joint efforts of thermal disturbance and drilling gas explosion, comprising a microwave radiation system, a drilling gas detonation system, a gas injecting fire preventing and figh...  
WO/2019/071755A1
Disclosed are a measurement-while-drilling method and device for assessing outburst risk of a coal seam applicable to prediction of outburst risk and evaluation of gas drainage performance. The device comprises a compartment (20), a pres...  
WO/2019/071756A1
Disclosed are a measurement-while-drilling method and device for obtaining a coal seam gas parameter applicable to measurement of a coal seam gas/coal seam methane parameter while drilling and evaluation of gas drainage performance. The ...  
WO/2019/063872A1
A backfill slurry sampling apparatus (1), in which a sample portion of a backfill slurry flow is conducted to a sampling line (3) via a sampling valve (4). A sample positioning means (5) is provided, comprising a plurality of receptacle ...  
WO/2019/063033A1
The invention relates to a device (100) for preparing and spraying a construction material (10) for erecting a weather dam (1), and to a method for this purpose. The device (100) comprises a container (12) receivable on a vehicle (11), t...  
WO/2019/052594A1
The invention relates to a conveying and transport system for tunnel constructions, having a twin-rail overhead track system which comprises a roof-mounted track (1) consisting of two lines (2, 3) of rails (4) arranged parallel alongside...  
WO/2019/040980A1
In accordance with the present invention, there is provided a conveyor skirt system, the system comprising: a support member (33); a series of skirting panels (24) releasably fixed to the support member (33); a rail assembly (56) positio...  
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 ...  
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 ...  
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...  
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...  
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)...  
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...  
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 ...  
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...  
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 ...  
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 ...  
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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...  

Matches 1 - 50 out of 6,644