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1.发明公开公开(公告)号：US20240346758A1
公开(公告)日：2024-10-17
申请号：US18580031
申请日：2023-03-27
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wei YANG , Wenyuan WANG , Yingte FENG , Wenxiao ZHANG , Zening WEI
CPC classification number: G06T17/05 , G06F16/283 , G06T17/205 , G06T2210/56
Abstract: A mine digital model construction method based on a three-dimensional point cloud database is disclosed. Mine data resources are collected, valid coordinate point position information is extracted according to point cloud data extraction standards, and a mine three-dimensional point cloud database is established; a model of rock strata boundary surfaces, mining areas, and tunnels is constructed, a surface three-dimensional geological model is constructed, and a mine three-dimensional geological model is further constructed; and division into grids is performed to obtain a mine extraction inversion digital model. According to the method, a mine three-dimensional point cloud database can be obtained, and various identified rock strata topographies, positions of mining areas and tunnels, fault morphologies, and surface morphologies can be restored; mine extraction inversion digital models having different precisions can be constructed, a foundation is laid for crustal stress field inversion, and a reliable basis is provided for mine disaster prevention and control.
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公开(公告)号：US20210148205A1
公开(公告)日：2021-05-20
申请号：US16759733
申请日：2018-10-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU BOAN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD
Inventor： Baiquan LIN , Yang ZHAO , Wei YANG , Qingzhao LI
IPC: E21B43/247 , E21B43/00 , E21B43/16 , E21B43/26
Abstract: The disclosure provides a method for extracting gas by fracturing a coal seam through a combination of hydraulic slotting and multi-stage combustion impact wave, comprising first cutting slots in an impact borehole using a hydraulic slotting equipment to perform pressure relief and permeability enhancement on a coal seam and enlarge a N2 or CO2 storage space, then injecting a large amount of N2 or CO2 into the borehole by means of a high pressure gas cylinder and a pressure reducing valve through a gas injection and extraction pipe, then injecting a certain amount of methane and dry air into a high-temperature and high-pressure combustion chamber by means of the high pressure gas cylinder and the pressure reducing valve, so that the gases are mixed and combusted to form high-temperature and high-pressure impact wave to push a piston to compress the N2 or CO2, thereby generating a large number of factures on the coal seam around the impact borehole under guiding action of the slots. The impact wave is repeatedly generated to form a multi-stage impact, and the impact of the next stage is based on the impact of the previous stage, so that the fractures on the coal seam around the borehole are further expanded and run through. After the N2 or CO2 is compressed by means of the multi-stage impact, more fracture networks are formed on the coal seam around the borehole under the guiding action of the slots and the fractures, thereby enhancing the borehole-based efficient gas extraction.
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公开(公告)号：US20170370156A1
公开(公告)日：2017-12-28
申请号：US15548060
申请日：2016-03-31
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Boquan LIN , TONG LIU , Yabin GAO , HE LI , Zhanbo HUANG , Rui WANG , Wei YANG
Abstract: The present invention relates to a “drilling-flushing-slotting” coupled pressure relief and permeability increasing method for a high gas outburst coal seam, which is more particularly suitable for the pressure relief and permeability increasing when gas of a roadway band of the high gas outburst coal seam is pre-extracted through crossing boreholes. On the basis of the crossing borehole pre-extraction measures for the coal seam gas, the hydraulic flushing and the hydraulic slotting are reasonably combined, and a “drilling-flushing-slotting” dedicated device is utilized to implement the coupled operation of “low pressure drilling-medium pressure flushing-high pressure slotting” in a borehole, so that the coal in the pre-extraction area is deformed and moved to form network cracks, passages are provided to the desorption flow of the gas, and the gas is easier to extract. The method can enlarge the single-hole pressure relief influence range, increase the gas permeability of the coal seam, improve the gas extraction efficiency, reduce the number of pre-extraction boreholes, shorten the pre-extraction time and have good applicability to the coal seams in different occurrence states. The present invention can reduce the number of the crossing boreholes by 32.5% and can reduce the length of each crossing borehole by 42.9%, is remarkable in coal roadway regional outburst eliminating effect, and obviously increases the tunneling speed.
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4.发明申请公开(公告)号：US20240378337A1
公开(公告)日：2024-11-14
申请号：US18293864
申请日：2023-03-27
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wei YANG , Zening WEI , Yingte FENG , Wenxiao ZHANG , Wenyuan WANG
Abstract: The present invention relates to a mine stress field twin modeling assimilation system for a full space-time mining process, and a method, and belongs to the technical field of digital twin assimilation inversion. The system comprises a digital model unit, a physical model unit and a human-computer interaction unit. The digital model unit is provided with an equal-proportion three-dimensional geological model, a mine historical assimilation model and a trusted digital twin model; the physical model unit covers a stratum and a mining face tunnel system, and the human-computer interaction unit has an information database and a software simulation monitoring interface. By means of a software establishment model, assimilation technology optimization model operation and a digital twin technology interconnection physical entity and virtual model, the present invention is able to construct a mine in-situ stress field twin model aimed at a full space-time mining process and better approximating reality, and is likewise able to use real physical scene monitoring data to perform simulated pre-mining in a virtual spatial model, aimed at grasping the space-time evolution laws of stress fields in the mining process, and providing guidance for safe mining production.
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Patent Agency Ranking
5.发明申请公开(公告)号：US20190145260A1
公开(公告)日：2019-05-16
申请号：US16098131
申请日：2017-12-01
Applicant: China University of Mining and Technology
Inventor： Baiquan LIN , Tong LIU , Ting LIU , Wei YANG , He LI , Rui WANG , Zheng WANG
IPC: E21F7/00
Abstract: A method for constructing networked preferential gas migration pathways and diverting and extracting gas. The method proposes that a fracture generation hole, a fracture guidance and development hole, a lateral rupture hole, and a fracture connection hole are respectively constructed in a roof in roadways on two sides of a working face in advance of an advance stress change area. Artificial guided fractures are actively constructed and formed inside the hard roof. Under a mining-induced stress effect, the artificial guided fractures and mining-induced fractures intersect with and are connected to each other to form networked preferential gas migration pathways. Meanwhile, boreholes for artificial guided fractures accelerate roof fracturing to form a rupture bed separation fracture area in a roof. Gas flows and migrates in a timely and efficient manner along networked fracture pathways and concentrates in the rupture bed separation fracture area in the roof.
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6.发明申请公开(公告)号：US20200182597A1
公开(公告)日：2020-06-11
申请号：US16632883
申请日：2018-10-29
Applicant: China University of Mining and Technology , XUZHOU BOAN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD
Inventor： Wei YANG , Baiquan LIN , Changzheng LU , Ru JIA , Minghua LIN
IPC: F42D1/18 , E21C37/00 , E21B33/127 , E21B34/06
Abstract: An integrated hole sealing, device includes a capsule plug, an outer capsule having a first hole site, an inner capsule having a second hole site, a capsule water injection pipe, a borehole water injection pipe and a tapered plug. Two ends of the outer capsule and the inner capsule are respectively fixed on the capsule plug and the tapered plug. The capsule plug, the tapered plug, the outer capsule and the inner capsule form a closed hollow cylindrical cavity. A middle part of the inner capsule is a hollow pipeline, and two ends thereof respectively correspond to the first and second hole sites. The borehole water injection pipe passes through the hollow cylindrical cavity. A part, located in the hollow cylindrical cavity, of the borehole water injection pipe is telescopically wound outside the inner capsule. The capsule water injection pipe passes through the capsule plug and extends into the hollow cylindrical cavity.
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7.发明申请公开(公告)号：US20200182033A1
公开(公告)日：2020-06-11
申请号：US16632885
申请日：2018-10-29
Applicant: China University of Mining and Technology , XUZHOU BOAN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD
Inventor： Baiquan LIN , Yang ZHAO , Wei YANG
Abstract: A multi-stage combustion impact wave coal mass cracking and heat injection alternating intensified gas extracting method is provided. A large amount of N2 or CO2 is injected into a drill hole by a heat injection and gas injection extracting pipe and by a high-pressure gas cylinder and a reducing valve, then a certain amount of methane and dry air are injected into a high-temperature and high-pressure combustion chamber by the high-pressure gas cylinder and the reducing valve, to be mixed and combusted to form high-temperature and high-pressure impact wave. High-temperature vapour is injected into the drill holes by the heat injection and gas injection extracting pipe to promote desorption of the coal masses.
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公开(公告)号：US20180229245A1
公开(公告)日：2018-08-16
申请号：US15549175
申请日：2016-12-15
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Boquan LIN , TONG LIU , Wei YANG , TING LIU , HE LI , Zhanbo HUANG , Rui WANG
Abstract: The present invention relates to a method for sorting and utilizing coal and rock for a coal and rock combined mining face, and is especially applicable to the sorting and utilization of coal and rock mined from a coal and rock combined mining face when an extremely thin coal seam is used as a protective layer in combined mining of multiple coal seams. Underground gangue transport, storage and filling systems are directly established underground to convey a large amount of coal and gangue mined from the coal and rock mining face to an underground sorting and washing chamber for efficient separation of the coal and the gangue, sorted gangue is crushed and then filled in a mined-out area of a protected layer, thus realizing the environment-friendly cut and fill mining of the protective layer while the gangue is not lifted, and effectively preventing the ground subsidence caused by combined mining of multiple coal seams; sorted middlings are conveyed to a gangue power plant on the ground for power generation through a main conveying system, so that the pressure on mine coal quality is alleviated when benefits are created in the power plant, and thus the average ash content of commercial coal is reduced, and the selling price is increased. The method provided by the invention realizes the efficient utilization of coal and rock while realizing the efficient separation of coal and gangue, and has remarkable economic and social benefits and excellent promotional value.
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9.发明申请公开(公告)号：US20190145259A1
公开(公告)日：2019-05-16
申请号：US16097828
申请日：2017-12-01
Applicant: China University of Mining and Technology
Inventor： Baiquan LIN , Tong LIU , Ting LIU , Wei YANG , He LI , Zhanbo HUANG , Rui WANG , Yihan WANG
IPC: E21F7/00
CPC classification number: E21F7/00
Abstract: A method for stepwise construction of a preferential gas migration pathway at a stope in a coal seam. First, a gas migration pathway is preliminarily formed at a stope depending on a mining effect of mining in a first mined seam. construction and stabilization method of gob-side entry retaining in deep strata, and a method of manual-guided pre-fracturing boreholes are then used to perform active construction respectively in external space and the outside of coal-rock mass to form preferential gas migration pathways. Eventually, under the effect of mining-induced stress, a system of preferential gas migration pathways connected to each other at the stope is further formed.
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