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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
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
Inventor： Renshu Yang , Yanbing Wang , Chengxiao Li , Zhaoran Zhang , Xinmin Ma , Hang Zhang , Zhouqi Bao
Abstract: 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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22.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
Inventor： Yifan ZENG , Shihao MENG , Qiang WU , Lu WANG , Shijie TANG , Xuedong KAN , Chao YU , Han BAO
Abstract: 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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23.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
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： WEI YANG , ZENING WEI , CHENG ZHAI , Yihan WANG , WENYUAN WANG , WENXIAO ZHANG
IPC: E21B43/00 , E21B34/06 , E21B43/1185 , E21B43/248 , E21B43/263 , E21B49/00 , G01N33/00
CPC classification number: E21B43/006 , E21B34/066 , E21B43/1185 , E21B43/248 , E21B43/263 , E21B49/00 , G01N33/0027 , E21B7/046
Abstract: 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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24.发明公开公开(公告)号：US20240091578A1
公开(公告)日：2024-03-21
申请号：US18462383
申请日：2023-09-06
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Botao QIN , Xu SHAO , Quanlin SHI , Yixuan YANG , Zujie MA , Wenjie JIANG , Hongqi YANG , Hongbiao SUN , Qingni MENG , Dejun WEI
IPC: A62D1/06
CPC classification number: A62D1/06
Abstract: 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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25.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
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Qian YIN , Jiangyu WU , Hongwen JING , Zheng JIANG , Tianci DENG , Hai PU , Qiang ZHANG , Bo MENG
IPC: G06F30/25
CPC classification number: G06F30/25 , G06F2111/10
Abstract: 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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Patent Agency Ranking
公开(公告)号：US11821314B2
公开(公告)日：2023-11-21
申请号：US18159102
申请日：2023-01-25
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , Xinjiang Tianchi Energy Co., Ltd. , China Energy Group Xinjiang Energy Company Ltd
Inventor： Shuzhao Chen , Fuming Liu , Bo Chang
IPC: E21C41/18 , E21C41/28 , E21C41/32 , E02D17/20 , C02F103/10
CPC classification number: E21C41/18 , C02F2103/10 , E02D17/20 , E21C41/28 , E21C41/32
Abstract: 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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27.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
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Chunyu YANG , Zhencai ZHU , Yidong ZHANG , Xin ZHANG , Zhen GU
IPC: G05D1/02 , G06V20/56 , G06T7/593 , G06V20/70 , G06V20/40 , G06T7/155 , G06T7/00 , G06T5/20 , G06T5/10 , G06V20/58
CPC classification number: 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
Abstract: 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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公开(公告)号：US11753935B2
公开(公告)日：2023-09-12
申请号：US17492956
申请日：2021-10-04
Applicant: China University of Mining and Technology
Inventor： Bo Wang , Xiaozhao Li , Guanqun Zhou , Fuqing Li , Qinghong Dong , Ziwei Qian , Siyuan Hu , Hongyun Chen
CPC classification number: E21D9/003 , E21B7/046 , E21B49/003 , E21B49/005 , E21D9/06 , E21B2200/20
Abstract: A directional drilling-exploring-monitoring integrated method for guaranteeing safety of an underwater shield tunnel includes: drilling a small-diameter borehole below a water area, and establishing an initial geological model; reaming the small-diameter borehole into a large-diameter borehole, placing a parallel electrical method (PEM) power cable and a monitoring optical fiber cable into the large-diameter borehole, acquiring zero field data, primary field data and secondary field data through carbon rod measurement electrodes before tunnel excavation, and processing the data with an existing inversion method to form an inversion image, thereby obtaining a refined geological model of a stratum; starting the tunnel excavation, and respectively acquiring a disturbance condition of rock and soil and a sedimentation and deformation condition of rock and soil around the tunnel during the excavation, thereby implementing safety excavation of the tunnel; and continuously monitoring the tunnel and the surrounding rock and soil in later use of the tunnel.
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公开(公告)号：US11732548B2
公开(公告)日：2023-08-22
申请号：US17716731
申请日：2022-04-08
Applicant: China University of Mining and Technology
Inventor： Xiaozhen Wang , Jianlin Xie , Weibing Zhu , Jialin Xu , Siyuan Yu
IPC: E21B47/005 , E21B47/04 , E21B33/14
CPC classification number: E21B33/146 , E21B47/005 , E21B47/04
Abstract: The present invention relates to a ground double-hole combined water inrush prevention method for overlying strata movement monitoring and bed separation water drainage. By arranging a rock strata movement monitoring borehole and a bed separation water drainage borehole, interior movement information of an overlying stratum and bed separation generation timing fed back by strata movement monitoring performed inside are monitored; work on the bed separation water drainage borehole is guided by monitoring changes in arranged monitoring points; and through combination of the movement monitoring borehole and the bed separation water drainage borehole, the utilization rate of the bed separation water drainage borehole is effectively increased.
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公开(公告)号：US20230192453A1
公开(公告)日：2023-06-22
申请号：US18001311
申请日：2022-03-25
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU LIREN MONORAIL TRANSPORTATION EQUIPMENT CO., LTD.
Inventor： Hao LU , Zhencai ZHU , Yidong ZHANG , Yuxing PENG , Mai DU , Hengzhen HU , Fuping ZHENG , Yu TANG
Abstract: A gear-track-detachable driving device in a monorail crane for a steep slope includes a driving mechanism, a traveling mechanism, a four-bar linkage mechanism, a connection mechanism, a meshing track plate and transition track plates. The driving mechanism includes driving motors, meshing gears, a bearing rod, and a bearing plate. The traveling mechanism includes traveling wheels, clamping wheels, a shell and telescopic struts. The linkage mechanism includes first and second rockers, a linkage, and a cylinder. The connection mechanism includes fixation plates, a connection plate and connection bolts. When the crane travels to the slope front, the cylinder drives the linkage mechanism to send the meshing gears onto the transition track and adjusts the linkage mechanism into a dead point state, and the telescopic struts are locked. After the crane enters the slope, the meshing gears cooperate with the meshing track plate to provide an auxiliary drive for the crane.
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