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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
发明人： Wei YANG , Wenyuan WANG , Yingte FENG , Wenxiao ZHANG , Zening WEI
CPC分类号： G06T17/05 , G06F16/283 , G06T17/205 , G06T2210/56
摘要： 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：US12091972B1
公开(公告)日：2024-09-17
申请号：US18596373
申请日：2024-03-05
发明人： Yifan Zeng , Aoshuang Mei , Qiang Wu , Huaming Wei , Yashuai Cui , Shihao Meng , Weihong Yang , Kai Pang , Liang Yang , Yidi Xing
CPC分类号： E21C41/18 , E21C39/00 , E21C2100/00 , E21F17/18
摘要： Disclosed are a method and a related device for determining a development status of a separation layer in a coal mine. The method includes: obtaining surface subsidence variation data of the coal mine within a preset time interval, rock stress variation data of a caving zone of the coal mine and water pressure variation data; determining a height decrease of the caving zone based on the rock stress variation data and the water pressure variation data; and determining the development status of the separation layer of the coal mine based on the height decrease and the surface subsidence variation data.
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公开(公告)号：US12037905B2
公开(公告)日：2024-07-16
申请号：US17604113
申请日：2020-04-15
发明人： Jiong Wang , Manchao He , Guangyuan Yu , Han Sun
摘要： The present disclosure relates to a technical field of coal mining, particularly to a method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in a thick coal seam, which comprises the following steps: reinforcing support on a roof and two sides of a roadway; performing roof slitting blasting to form a pre-splitting slit; erecting a temporary support device and a gangue retaining device in the roadway along the retained entry; performing no caving within a range of a preset distance at an end of the working face near the retained entry side; and removing the temporary support device in the roadway after entry forming stabilizes, and closing the goaf to complete entry retaining. The roof slitting blasting is more beneficial to collapse of strata in the goaf, so that the strata in the slit can better fill stoping space after collapse, and the roof of the retained entry forms a short arm beam structure laterally, which avoids forming a long suspended roof in the goaf, and improves the stress of surrounding rock of gob-side entry retaining; coal caving is not performed in a certain range at the end of the working face of the retained entry side, which further ensures the filling effect of the goaf on the retained entry side, effectively limits the rotary sinking of blocks of the main roof, and greatly reduces effect on the stability of the retained entry.
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公开(公告)号：US11976914B1
公开(公告)日：2024-05-07
申请号：US18370545
申请日：2023-09-20
申请人： UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
发明人： Renshu Yang , Yanbing Wang , Chengxiao Li , Zhaoran Zhang , Xinmin Ma , Hang Zhang , Zhouqi Bao
摘要： An efficient blasting method for similar cutting in a rock tunnel is provided, which relates to the technical field of rock tunneling. The method includes the following steps: drilling: drilling central holes, lower cutting holes, upper cutting holes, auxiliary holes and peripheral holes in a cross section area for tunnel construction; filling explosives: filling explosives into the central holes, the lower cutting holes, the upper cutting holes, the auxiliary holes and the peripheral holes; and blasting: blasting following blast holes in turn to complete full-face one-time blasting in a millisecond delay blasting mode. The method is applicable for construction scenes of drilling and blasting methods.
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5.发明公开公开(公告)号：US20240141783A1
公开(公告)日：2024-05-02
申请号：US18346104
申请日：2023-06-30
发明人： Yifan ZENG , Shihao MENG , Qiang WU , Lu WANG , Shijie TANG , Xuedong KAN , Chao YU , Han BAO
摘要： A tracer diffusion device includes: a first container, for holding a first fluid containing a tracer; a second container, for holding a second fluid; a drilling pipe; wherein, a first end of the drilling pipe is connected to the first container; a second end of the drilling pipe is extended into a borehole; and the second end of the drilling pipe is equipped with a first sealing capsule and a second sealing capsule; a plurality of through holes are arranged on the drilling pipe between the first sealing capsule and the second sealing capsule; a unidirectional driving device, arranged on the drilling pipe, for injecting the first fluid from the first container into the borehole between the first sealing capsule and the second sealing capsule; and a bidirectional driving device, arranged between the second container and the first sealing capsule.
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6.发明公开公开(公告)号：US20240110465A1
公开(公告)日：2024-04-04
申请号：US18027605
申请日：2021-12-27
发明人： WEI YANG , ZENING WEI , CHENG ZHAI , Yihan WANG , WENYUAN WANG , WENXIAO ZHANG
IPC分类号： E21B43/00 , E21B34/06 , E21B43/1185 , E21B43/248 , E21B43/263 , E21B49/00 , G01N33/00
CPC分类号： E21B43/006 , E21B34/066 , E21B43/1185 , E21B43/248 , E21B43/263 , E21B49/00 , G01N33/0027 , E21B7/046
摘要： A method for shale gas exploitation includes performing horizontal drilling operation on an area to be constructed, forming a crack around a horizontal drill hole wall by shaped charge perforation; expanding the crack around a horizontal hole hydraulic fracturing, and extracting methane gas after a fracturing fluid is discharged; after methane gas is reduced, performing in-situ combustion explosion fracturing on the methane involved in horizontal drilling; thereafter continuing to expand the crack in the horizontal drill hole such that methane continues to seep out, and continuing extracting methane; repeating combustion explosion fracturing and extraction operations, so as to increase combustion explosion cracking permeability, and greatly enhance the exploitation effect of shale gas. The method is suitable for fracturing reconstruction of unconventional oil and gas reservoirs such as shale gas reservoirs, coal seam gas reservoirs and tight sandstone gas reservoirs.
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公开(公告)号：US20240091578A1
公开(公告)日：2024-03-21
申请号：US18462383
申请日：2023-09-06
发明人： Botao QIN , Xu SHAO , Quanlin SHI , Yixuan YANG , Zujie MA , Wenjie JIANG , Hongqi YANG , Hongbiao SUN , Qingni MENG , Dejun WEI
IPC分类号： A62D1/06
CPC分类号： A62D1/06
摘要： A fly ash-based fire-prevention and extinguishing material with carbon dioxide mineralized and stored, and a preparation method thereof are provided. The preparation method includes: separately weighing 100 parts to 120 parts of water, 1 part to 3 parts of a solid strong alkali, and 20 parts to 40 parts of a fly ash as raw materials, pouring the raw materials into a reactor successively to obtain a resulting mixture, and stirring the resulting mixture at a high rotational speed; adding 10 parts to 20 parts of a solubilizing agent to the reactor, sealing the reactor, introducing carbon dioxide to the reactor at room temperature to maintain a carbon dioxide pressure to obtain a resulting slurry, and stirring the resulting slurry at a high rotational speed; and further introducing carbon dioxide into the reactor to increase the carbon dioxide pressure, and stirring the resulting slurry at a low rotational speed.
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8.发明公开公开(公告)号：US20240020442A1
公开(公告)日：2024-01-18
申请号：US18352344
申请日：2023-07-14
发明人： Qian YIN , Jiangyu WU , Hongwen JING , Zheng JIANG , Tianci DENG , Hai PU , Qiang ZHANG , Bo MENG
IPC分类号： G06F30/25
CPC分类号： G06F30/25 , G06F2111/10
摘要： A method and a system for simulating contact and interaction between a support member and a chamber surrounding rock mass are provided in the application. The method includes: obtaining a support scheme of a roadway to be simulated, dividing the roadway to be simulated based on the support scheme to obtain several roadway sections; obtaining physical and mechanical parameters of each rock stratum in each roadway section and an occurrence state of the roadway surrounding rock; constructing particle flow numerical models corresponding to the roadway section; through the particle flow numerical models of every two adjacent roadway sections, obtaining a particle flow meso-structural evolution model of the roadway to be simulated; obtaining meso-mechanical parameters of the roadway to be simulated based on the particle flow numerical models, calibrating the meso-mechanical parameters through the physical and mechanical parameters, establishing the particle flow meso-structural evolution model of the roadway to be simulated.
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公开(公告)号：US11821314B2
公开(公告)日：2023-11-21
申请号：US18159102
申请日：2023-01-25
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY , Xinjiang Tianchi Energy Co., Ltd. , China Energy Group Xinjiang Energy Company Ltd
发明人： Shuzhao Chen , Fuming Liu , Bo Chang
IPC分类号： E21C41/18 , E21C41/28 , E21C41/32 , E02D17/20 , C02F103/10
CPC分类号： E21C41/18 , C02F2103/10 , E02D17/20 , E21C41/28 , E21C41/32
摘要： An underground mining method for unexploited coal in a boundary open-pit mine is provided. A shaft construction platform is arranged at one rock step to two rock steps above a coal seam. Intermediate bridges are built starting from a pit bottom. Mining area clay is laid on a working slope where no intermediate bridge is built and on a side slope with an outcrop of the coal seam as a sealing layer to seal the slopes. Auxiliary vertical shafts and main inclined shafts are dug. The pit bottom is dug downward to form a digging space on a side close to the working slope between two adjacent ones of the intermediate bridges, and clay is filled into the digging space to form an artificial water barrier layer. A roadway communicating the main inclined shafts and the auxiliary vertical shafts is constructed, and a coal seam stope face is arranged.
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10.发明公开公开(公告)号：US20230305572A1
公开(公告)日：2023-09-28
申请号：US18022645
申请日：2022-02-23
发明人： Chunyu YANG , Zhencai ZHU , Yidong ZHANG , Xin ZHANG , Zhen GU
IPC分类号： G05D1/02 , G06V20/56 , G06T7/593 , G06V20/70 , G06V20/40 , G06T7/155 , G06T7/00 , G06T5/20 , G06T5/10 , G06V20/58
CPC分类号： G05D1/0251 , G05D1/0214 , G06T5/10 , G06T5/20 , G06T7/0012 , G06T7/155 , G06T7/593 , G06V20/41 , G06V20/58 , G06V20/588 , G06V20/70 , G05D2201/0202 , G06T2207/10012 , G06T2207/10028 , G06T2207/20021 , G06T2207/20028 , G06T2207/20036 , G06T2207/20048 , G06T2207/20081 , G06T2207/30256 , G06T2207/30261
摘要： A method for drivable area detection and autonomous obstacle avoidance of unmanned haulage equipment in deep confined spaces is disclosed, which includes the following steps: acquiring 3D point cloud data of a roadway; computing a 2D image drivable area of the coal mine roadway; acquiring a 3D point cloud drivable area of the coal mine roadway; establishing a 2D grid map and a risk map, and performing autonomous obstacle avoidance path planning by using an improved particle swarm path planning method designed for deep confined roadways; and acquiring an optimal end point to be selected of a driving path by using a greedy strategy, and enabling an unmanned auxiliary haulage vehicle to drive according to the optimal end point and an optimal path. According to the present disclosure, images of a coal mine roadway are acquired actively by use of a single-camera sensor device, a 3D spatial drivable area of an auxiliary haulage vehicle in a deep underground space can be computed stably, accurately and rapidly, and the autonomous obstacle avoidance driving of the unmanned auxiliary haulage vehicle in a deep confined roadway is completed according to the drivable area detection and safety assessment information, and therefore, the method of the present disclosure is of great significance to the implementation of an automatic driving technology for an auxiliary haulage vehicle for coal mines.
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