公开(公告)号：US20240069226A1

公开(公告)日：2024-02-29

申请号：US17396603

申请日：2021-08-06

申请人： China University of Mining and Technology (Beijing)

发明人： Suzhen SHI ,  Mingxuan LI

IPC分类号： G01V1/28 ,  G01V1/30

CPC分类号： G01V1/282 ,  G01V1/303 ,  G01V2210/675 ,  G01V2210/677

摘要： A method for automatically picking up seismic velocity based on depth learning is disclosed. The method includes obtaining a seismic data and labels, and inputting the seismic data and the labels into a pre-trained depth learning model to obtain a velocity pick-up result. A structure of the depth learning model includes a residual network composed of three residual blocks. And after the residual network, a long-short term memory network and a full connection layer are further added. Each of the residual blocks is composed of three convolutional layers. An activation function between each residual block and each convolutional layer of the residual block is a Relu function. An activation function between the long-short term memory network and the full connection layer is a Relu function. The method for automatically picking up seismic velocity based on depth learning provided by the disclosure effectively improves the efficiency of seismic velocity pick-up.

公开(公告)号：US11781429B1

公开(公告)日：2023-10-10

申请号：US18332606

申请日：2023-06-09

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  University of Mining and Technology-Beijing Inner Mongolia Research Institute

发明人： Yifan Zeng ,  Qiang Wu ,  Weihong Yang ,  Zhaolai Hua ,  Yanping Miao ,  Lu Wang ,  Kai Pang ,  Lei Yang ,  Aoshuang Mei ,  Shihao Meng ,  Han Bao ,  Xue Liu ,  Xuan Xiao

IPC分类号： E21D11/10 ,  E21D11/38 ,  E21B33/13

CPC分类号： E21D11/38 ,  E21B33/13 ,  E21D11/10

摘要： A method for blocking mine water inrush includes: grouting first slurry into an interface between the quaternary aquifer and the weathered bedrock aquifer in a fracture grouting manner until a first preset condition is met; forming a first water-resisting cushion after the first slurry is solidified; drilling a curve branch drill hole in the surface horizon downward; grouting second slurry into the curve branch drill hole in a downward grouting manner until a second preset condition is met; forming a second water-resisting cushion after the second slurry is solidified; grouting third slurry onto a top of the first water-resisting cushion in an upward grouting manner until a third preset condition is met; forming a third water-resisting cushion after the third slurry is solidified; wherein the third water-resisting cushion is located on the top of the first water-resisting cushion.

公开(公告)号：US11727634B2

公开(公告)日：2023-08-15

申请号：US17313419

申请日：2021-05-06

申请人： China University of Mining and Technology, Beijing

发明人： Yi Liu

IPC分类号： G06T17/05 ,  G06T7/73 ,  H04W4/021 ,  G06V20/64 ,  G06F18/22

CPC分类号： G06T17/05 ,  G06F18/22 ,  G06T7/75 ,  G06V20/647 ,  H04W4/021

摘要： The present disclosure discloses an intelligent position sensing system based on spatial three-dimensional model image matching, which realizes three-dimensional precise positioning and target orientation positioning of closed spaces, such as a coal mine. The position sensing system includes a three-dimensional GIS server, a position matching server, a wireless camera, and a wireless access device. Position sensing is realized by comparing an image collected by the wireless camera with a two-dimensional image generated by rendering. The disclosure positions a target without carrying a special wireless positioning card, and can realize three-dimensional precise positioning, including target orientation, by only carrying a camera with a wireless communication function in combination with a wireless positioning technology, a three-dimensional GIS technology, and a digital image processing technology, which can be widely applied to the field of precise positioning of confined spaces, such as factories, coal mines, and subways, and can be widely applied and promoted.

公开(公告)号：US20230063143A1

公开(公告)日：2023-03-02

申请号：US17605771

申请日：2020-04-15

申请人： China University of Mining and Technology, Beijing

发明人： Jiong WANG ,  Guangyuan YU ,  Jian JIANG

IPC分类号： E21C41/18 ,  E21D9/14

摘要： The present disclosure relates to a technical field of coal mining, in particular to a surrounding rock stability control method adapted for a coal mining area main roadway. The method comprises the following steps: reinforcing support on a roof and two sides of the mining area main roadway on a basis of an original support form; digging a safety roadway along a stop line of a present working face required by coal mine design, and supporting the safety roadway, wherein a protective coal pillar is formed between the safety roadway and the mining area main roadway; performing slitting blasting on the roof in the safety roadway, wherein blast holes are arranged on a roadway corner line on one side of the present working face to form a pre-splitting slit; and performing stoping at a next working face after completing coal mining at the present working face when stoping at the present working face advances to the safety roadway. By cutting the roof and relieving pressure at the stop mining line of the working face, an influence of mining disturbance on stability of the mining area main roadway in the stoping process of the working face is reduced, and by reinforcing support, a yielding deformation capacity of the mining area main roadway is improved, and the stability of the surrounding rock of the mining area main roadway is further improved.

公开(公告)号：US20220381661A1

公开(公告)日：2022-12-01

申请号：US17828860

申请日：2022-05-31

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Ruidong PENG ,  Hongwei ZHOU ,  Wenhao JIA ,  Yu YANG ,  Kai SI ,  Jianqiang WANG

IPC分类号： G01N3/10 ,  G01N33/24 ,  G01N3/06

摘要： A pressure-preserving conventional triaxial compression loading apparatus of the present invention includes a pressure vessel, an upper piston rod, a lower piston rod, and an annular oil bag assembly. Hollow chambers of the pressure vessel in vertical communication sequentially include an upper chamber, an upper sealed chamber, a confining pressure chamber, a lower sealed chamber, and a lower chamber from top to bottom. The annular oil bag assembly is placed in the confining pressure chamber. When an annular inner chamber of an annular oil bag is filled with medium, an outer wall of the annular oil bag and an inner wall of the confining pressure chamber are attached together. A fidelity specimen is placed in a specimen chamber defined by a lower end surface of the upper piston rod, an upper end surface of the lower piston rod, and an inner wall of the annular oil bag. A variety of measuring sensors are disposed in the annular inner chamber of the annular oil bag. The pressure-preserving conventional triaxial compression loading apparatus of the present invention may accommodate a fidelity specimen, and use the annular oil bag assembly and the upper and lower piston rods to perform a pressure-preserving conventional triaxial loading test on the fidelity specimen, so that test data is more accurate and reliable, to help to study the mechanical behavior of in-situ rock and measure their properties more faithfully.

公开(公告)号：US11459849B1

公开(公告)日：2022-10-04

申请号：US17730031

申请日：2022-04-26

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  Shaanxi Coal Caojiatan Mining Co., Ltd.

发明人： Yifan Zeng ,  Qiang Wu ,  Zhaolai Hua ,  Rui Wang ,  Zhenzhong Pang ,  Lu Wang ,  Yang Lv ,  Xin Du ,  Kai Pang ,  Aoshuang Mei

IPC分类号： E21B33/13 ,  E21B27/00 ,  E21F17/00

摘要： A sealing method for a drilled hole in three zones of overburden comprises: blocking the fissure zone and the caving zone with at least one filling bag; and transporting prepared cement slurry to the drilled hole through a hollow drill pipe, so as to block the curved subsidence zone. The three zones of overburden comprise a fissure zone, a caving zone and a curved subsidence zone.

公开(公告)号：US11306586B2

公开(公告)日：2022-04-19

申请号：US16897363

申请日：2020-06-10

申请人： China University of Mining and Technology-Beijing

发明人： Xianlei Xu ,  Suping Peng ,  Zheng Ma ,  Biao Guo ,  Tao Sun

IPC分类号： E21C35/24 ,  E21C31/08

摘要： An intelligent detection and recognition system and method for a coal-rock interface of a mine are provided. The intelligent detection and recognition system mainly includes an intelligent lifting support fastened to the top of a shearer, a non-contact radar antenna disposed at the top of the intelligent lifting support, and an operating terminal with which the radar antenna wirelessly conducts information transmission. In an operating state, a radiation direction of the radar antenna is perpendicular to the surface of a to-be-detected coal seam, and the operating terminal is configured to acquire radar data of the to-be-detected coal seam collected by the radar antenna, and draw and display a coal-rock horizon occurrence curve according to the radar data.

公开(公告)号：US20200240270A1

公开(公告)日：2020-07-30

申请号：US16745650

申请日：2020-01-17

申请人： China University of Mining and Technology (Beijing)

发明人： Renliang Shan ,  Haochen Zhang ,  Xiangsong Kong

IPC分类号： E21F17/103

摘要： The present invention discloses an I-shaped water-retaining dam for an underground reservoir in a coal mine. The I-shaped water-retaining dam is located between coal pillar dams to isolate an underground reservoir from a corresponding coal roadway. The I-shaped water-retaining dam includes an upper flange plate, a web plate, and a lower flange plate from top to bottom, where a vertical face of a dam body is of an I shape; the upper flange plate extends into a roadway roof; two ends of the web plate are embedded into the coal pillar dams; and the lower flange plate extends into a floor. The I-shaped water-retaining dam is located in an underground coal roadway, and bears complex surrounding rock stress. The present invention effectively overcomes water seepage of a weak part at an upper part of a conventional I-shaped water-retaining dam.

公开(公告)号：US10564080B2

公开(公告)日：2020-02-18

申请号：US16317815

申请日：2018-04-17

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Yang Ju ,  Peng Liu ,  Hongbin Liu ,  Yongming Yang

IPC分类号： G01N3/00 ,  G01N3/12 ,  G06T17/05 ,  E21B43/16 ,  E21B49/00 ,  B33Y80/00 ,  B33Y10/00

摘要： A method for measuring a stress field evolution during a CO2 fracturing process is provided, which is adopted to not only transparently display the spatial distribution and propagation morphology of internal fracturing fracture of a three-dimensional physical models, but also obtain internal three-dimensional stress phase diagram in a fracture propagation process by integration of a CT scanning, a digital reconstruction, a 3D printing, a CO2 fracturing experiment, a stress freezing and a photoelastic measurement techniques, thereby realizing transparent display and quantitative characterization of the three-dimensional stress field and its evolution law of a solid matter in the CO2 fracturing process.

公开(公告)号：US10408721B2

公开(公告)日：2019-09-10

申请号：US16313469

申请日：2017-12-07

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Yang Ju ,  Peng Liu ,  Hongbin Liu ,  Yongming Yang

IPC分类号： G01N3/12 ,  G01N3/18

摘要： A device for stress-freezing experiments during fracturing process according to the present application, in which heating and cooling treatment on a specimen under corresponding temperature control according to a preset temperature gradient and a photosensitive curve is performed by a temperature control system, to realize stress-freezing of the specimen; a pressure is applied to a specimen by a true triaxial servo loading system; and corresponding fracturing experiments are performed to the specimen by a fracturing liquid pumping system having an output end arranged in a thermo-controlled oven.