Patents Assigned to China University of Mining and Technology
  • Patent number: 11125072
    Abstract: Disclosed are a synchronous movement apparatus of tracks in a wellbore inspection system and a control method thereof. The synchronous movement apparatus includes an upper moving track, a lower moving track, an upper wire rope moving device, a lower wire rope moving device, and a control device; the upper moving track and the lower moving track are correspondingly embedded into an inner wall of a wellbore, and the upper moving track is located above the lower moving track; the upper wire rope moving device is fitted in the upper moving track, and the lower wire rope moving device is fitted in the lower moving track; the upper moving track and the lower moving track have the same structure and each include a track body. A rolling face is arranged on the track body, and grooves are evenly distributed on the rolling face along the extending direction of the track body.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: September 21, 2021
    Assignee: China University of Mining and Technology
    Inventors: Gongbo Zhou, Chaoquan Tang, Zhencai Zhu, Gang Zhang, Zhenzhi He, Hongwei Tang, Wei Li, Fan Jiang
  • Publication number: 20210276599
    Abstract: Disclosed in the present invention are a rope climbing robot capable of surmounting an obstacle and an obstacle surmounting method thereof. The rope climbing robot includes a robot body. The robot body includes a shell, a drive module and a guide module. The shell is longitudinally cut into an even number of shell segments, and is laterally cut into a corresponding drive housing segment and a corresponding guide housing segment according to mounting positions of the drive module and the guide module in the shell. There is at least one guide module and at least one guide housing segment, and a shell opening mechanism is further mounted in the shell. The shell opening mechanism includes a first shell opening mechanism configured to open/close the guide housing segment and a second shell opening mechanism configured to open/close the drive housing segment.
    Type: Application
    Filed: November 11, 2019
    Publication date: September 9, 2021
    Applicant: China University of Mining and Technology
    Inventors: Gongbo ZHOU, Hongwei TANG, Chaoquan TANG, Zhencai ZHU, Zhenzhi HE, Wei LI, Fan JIANG
  • Publication number: 20210277765
    Abstract: A movement-synchronized wellbore inspection system and a movement-synchronization control method thereof are disclosed. The wellbore inspection system comprises a rope-climbing robot, a wire rope, a ground wire rope moving device, a ground wire rope moving track, an underground wire rope moving device, an underground wire rope moving track, an inertial sensor and a control device. An upper end of the wire rope is connected to the ground wire rope moving device, and an lower end of the wire rope passes through the rope-climbing robot and is then connected to the underground wire rope moving device. The control device controls the underground and ground wire rope moving devices to move in synchronization, and then the inertial sensor carried on the rope-climbing robot detects posture data of the wire rope and transmits the data to the control device.
    Type: Application
    Filed: November 11, 2019
    Publication date: September 9, 2021
    Applicant: China University of Mining and Technology
    Inventors: Chaoquan TANG, Gongbo ZHOU, Hongwei TANG, Zhenzhi HE, Gang ZHANG, Wei LI, Fan JIANG
  • Publication number: 20210276018
    Abstract: Embodiments of the present disclosure provide a pressurized two-product dense-medium separation process for oil shale, and belongs to the field of oil shale industry, in particular to the processing and utilization of oil shale. This process includes: pre-screening a raw oil shale ore through a 25 mm screen; crushing an oversize product, mixing with an undersize product, and separating by a pressurized two-product dense-medium cyclone; and subjecting an underflow and an overflow of the pressurized two-product dense-medium cyclone to dewatering and medium draining respectively to obtain a concentrate and a tailing. The present disclosure has a simple process flow, high separation efficiency and low energy consumption and can reduce the cost of oil refining and achieve better economic benefits.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: China University of Mining and Technology
    Inventors: Bo Zhang, Chenlong Duan, Enhui Zhou, Guanghui Yan, Zengqiang Chen, Zhenfu Luo, Zhenxing Zhang, Guangqing Zhu
  • Publication number: 20210262337
    Abstract: Disclosed are a synchronous movement apparatus of tracks in a wellbore inspection system and a control method thereof. The synchronous movement apparatus includes an upper moving track, a lower moving track, an upper wire rope moving device, a lower wire rope moving device, and a control device; the upper moving track and the lower moving track are correspondingly embedded into an inner wall of a wellbore, and the upper moving track is located above the lower moving track; the upper wire rope moving device is fitted in the upper moving track, and the lower wire rope moving device is fitted in the lower moving track; the upper moving track and the lower moving track have the same structure and each include a track body. A rolling face is arranged on the track body, and grooves are evenly distributed on the rolling face along the extending direction of the track body.
    Type: Application
    Filed: November 11, 2019
    Publication date: August 26, 2021
    Applicant: China University of Mining and Technology
    Inventors: Gongbo ZHOU, Chaoquan TANG, Zhencai ZHU, Gang ZHANG, Zhenzhi HE, Hongwei TANG, Wei LI, Fan JIANG
  • Publication number: 20210262341
    Abstract: The present invention provides an inversion calculation method of coal-bed gas parameters of fast test while-drilling. The technical solution is that an inversion calculation method of coal-bed gas parameters of fast test while-drilling includes: during drilling in a coal bed, testing a gas flow and a gas concentration of an orifice in real time while-drilling, calculating drilling gas discharge amounts of the orifice, inversely calculating a coal-bed gas pressure at a drill bit based on borehole and coal-bed permeability parameters, and calculating a coal-bed gas content according to a gas content and gas pressure relational expression. The present invention has the beneficial effects that the present invention does not occupy the drilling and drill rod replacement time, is accurate, convenient, real-time and fast, and can test and calculate the coal-bed gas parameters of each section along the whole borehole length.
    Type: Application
    Filed: October 12, 2019
    Publication date: August 26, 2021
    Applicants: China University of Mining and Technology, XUZHOU FUAN TECHNOLOGY CO., LTD.
    Inventors: Enyuan WANG, Hao WANG, Jianchun OU, Rongxi SHEN, Xiyuan WANG, Baolin LI, Zhonghui LI, Xiaofei LIU
  • Publication number: 20210263003
    Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.
    Type: Application
    Filed: October 8, 2019
    Publication date: August 26, 2021
    Applicants: China University of Mining and Technology, China Mining & Civil New Material Science and Technology Ltd., BOXIA MINING TECHNOLOGY LTD.
    Inventors: Xiangyu WANG, Jiangbiao BAI, Junwu XIA, Shuai YAN
  • Publication number: 20210262336
    Abstract: Disclosed are a wellbore inspection system and method for an ultra-deep vertical shaft. The wellbore inspection system includes a wire rope moving system, inspection robots, a visual image acquisition system, a wireless communication module, a central control system, and an image post-processing system of an upper computer. The wire rope moving system includes a surface wire rope guide rail, an underground wire rope guide rail, a surface wire rope moving device, an underground wire rope moving device, and a wire rope. The visual image acquisition system includes explosion-proof cameras. After image information acquired by the explosion-proof cameras is processed by a lower computer, the processed image is transmitted by a wireless image transmission module to the image post-processing system of the upper computer. The central control system is connected to the inspection robots and the wire rope moving system, and the inspection robots are connected to the central control system.
    Type: Application
    Filed: November 11, 2019
    Publication date: August 26, 2021
    Applicant: China University of Mining and Technology
    Inventors: Gongbo ZHOU, Chaoquan TANG, Zhencai ZHU, Hongwei TANG, Zhenzhi HE, Gang ZHANG, Wei LI, Fan JIANG
  • Publication number: 20210262345
    Abstract: Disclosed is an interference protection device and method for a hydraulic support and a cutting part of a shearer. The device includes: a plurality of dust-proof cases evenly and fixedly provided on a surface of one side of a hauling part of the shearer that faces away from a coal wall, and a dust-proof housing fixed on the hydraulic support. A first ultrasonic transducer and a flash lamp are fixedly provided in each dust-proof case, and a second ultrasonic transducer, a receiver, and a data processing module are fixedly provided in the dust-proof housing. The data processing module is electrically connected to the second ultrasonic transducer and the receiver separately, the first ultrasonic transducers and the flash lamps are all electrically connected to an external single-chip microcomputer, and the data processing module is electrically connected to a hydraulic support control computer.
    Type: Application
    Filed: June 18, 2019
    Publication date: August 26, 2021
    Applicants: China University of Mining and Technology, XUZHOU GOLDFLUID HYDRAULIC TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Zhongbin WANG, Honglin WU, Chao TAN, Xuliang LU, Bowen LIU, Xiaoyu LI, Yue WU, Hongya ZHOU
  • Patent number: 11097925
    Abstract: A device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft is provided. End cage jamming buffer mechanisms are added at both ends of an automatic wire rope tension balancing mechanism, wherein the end cage jamming buffer mechanisms include an end buffer module and an end fixing module, and the end buffer module and the end fixing module are respectively mounted on shafts of the automatic wire rope tension balancing mechanisms at two ends. The end buffer module mainly consists of a buffer bearing pedestal, a limit block, a buffer block, and a stop block sequentially mounted on the shaft of the automatic wire rope tension balancing mechanism at one end. The end fixing module mainly consists of a fixing bearing pedestal and a fixing block mounted on the shaft, wherein the fixing bearing pedestal is connected to a transmission gear by an adjusting bolt.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 24, 2021
    Assignees: China University of Mining and Technology, XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD, INNER MONGOLIA UNIVERSITY OF TECHNOLOGY
    Inventors: Guohua Cao, Zhencai Zhu, Ying Wang, Ke Wang, Chunli Hua, Gongbo Zhou, Weihong Peng, Yuxing Peng, Wei Li, Yu Tang, Shanzeng Liu, Xin Zhang
  • Patent number: 11085296
    Abstract: 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 caused by underground mining and production is directly filled and covered with overburden materials such as soil and rock discharged from an adjoining open-pit mine; small and medium fracture zones and large fracture zones caused by mining are timely backfilled, tamped, and levelled according to areas before the ground subsidence area appears, the thickness of the levelled soil layer is kept above 1 m, and the area slope is controlled within 7°.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: August 10, 2021
    Assignee: China University of Mining and Technology
    Inventors: Feng Ju, Shuai Guo, Zhipeng Fu, Peng Huang, Pingshan Li, Yunfei Liu
  • Patent number: 11085279
    Abstract: A stress-transfer method in tunnel with high ground pressure based on fracturing ring. According to the stress source of the tunnel, fracturing by drilling holes to form artificial weaken zones in surrounding rocks, that's named fracturing ring. The fracturing ring is the weaken zone with some width, whose inner boundary is the protective circle. The fracturing ring with small width is called the cutting and interruption circle and the cutting or interruption arc. The radius of the protective circle is determined by setting a certain width of safety coal pillar barriers at the edge of a support body. The radius of the fracturing ring is determined by the surrounding rock structure and the stress conditions as well as the construction technology. Usually, the higher the stress, the wider the radius of the fracturing ring. The cutting and interruption circle or arc could cut off all of the targeted rock which transmits the stress.
    Type: Grant
    Filed: September 30, 2017
    Date of Patent: August 10, 2021
    Assignees: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTD
    Inventors: Bingxiang Huang, Jiangwei Liu, Xinglong Zhao, Shuliang Chen
  • Publication number: 20210231013
    Abstract: The present invention discloses a hard rock roadway and tunnel boring machine with actively rotating hobs, including a rack provided with a crawler track unit. The rack is provided with a hydraulic power unit and a high-pressure abrasive jet generation system connected therewith. A transmission box is fixedly arranged at one of ends of the rack. The transmission box is provided with two input shafts and one output shaft. The input shafts are connected with planetary reduction mechanisms. Input ends of the planetary reduction mechanisms are connected with cantilever disc driving motors. A cantilever disc is fixed to the output shaft. Four cantilevers are hinged to the cantilever disc. Cantilever driving motors are further arranged on the cantilever disc. Actively rotating hob devices are arranged at ends of the cantilevers away from the cantilever disc. The transmission box is further provided with rotary sealing devices.
    Type: Application
    Filed: September 12, 2019
    Publication date: July 29, 2021
    Applicant: China University of Mining and Technology
    Inventors: Hongxiang JIANG, Songyong LIU, Zhencai ZHU, Changlong DU
  • Publication number: 20210201497
    Abstract: A method for determining a segmentation threshold of a digital image of a rock-soil material is disclosed. The method comprises the following steps: S1: acquiring a gray-level histogram curve of an SEM image of the rock-soil material; S2: determining a value range of a segmentation threshold T according to the gray-level histogram curve; S3: acquiring second derivatives of the gray-level histogram curve; and S4: determining the segmentation threshold T according to the second derivatives of the gray-level histogram curve and the value range of the segmentation threshold T. The present invention can rapidly and accurately determine the segmentation threshold of the digital image of the rock-soil material, and accurately distinguish a pore or fissure structure from a surface soil skeleton structure of the rock-soil material in the digital image.
    Type: Application
    Filed: May 9, 2019
    Publication date: July 1, 2021
    Applicants: China University of Mining and Technology, XUZHOU JIANGHENG ENERGY TECHNOLOGY CO., LTD.
    Inventors: Jiangfeng LIU, Xulou CAO, Jianfu SHAO, Bingxiang HUANG, Gang WANG, Dawei HU, Liang CHEN, Shuliang CHEN
  • Patent number: 11035228
    Abstract: A simulation test system for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 15, 2021
    Assignees: China University of Mining and Technology, XUZHOU OLIVINE GEOSCIENCE & GEOTEC CO., LTD., CHINA UNIVERSITY OF PETROLEUM, EAST CHINA, ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY, WUHAN INSTITUTE OF TECHNOLOGY
    Inventors: Shuxun Sang, Haiwen Wang, Xiaozhi Zhou, Liwen Cao, Shiqi Liu, Huihu Liu, Zicheng Li, Jinlong Jia, Huazhou Huang, Changjiang Liu, Hongjie Xu, Ran Wang, Shuyun Zhu
  • Patent number: 11034054
    Abstract: A prefabricated stair modular assembly mold comprises a base, a step standard module, an upside module of a lower platform, an underside rotating module of a lower platform, an upside module of an upper platform, an underside rotating module of an upper platform, an underside common module, and an underside adjustment modules. Prefabricated stair molds of different dimensions are formed by means of locating holes provided in the assembling modules, and are then fixed by means of sliding holes at two ends. Further disclosed is a mounting method for said assembly mold. Said assembly mold has high positioning accuracy, and small accumulated error, improving the mounting efficiency of the prefabricated staircase mold.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: June 15, 2021
    Assignees: China University of Mining and Technology, China Mining & Civil New Material Science and Technology Ltd., BOXIA MINING TECHNOLOGY LTD.
    Inventors: Hong Chang, Junwu Xia, Xiaofang Xiang, Xia Bai
  • Patent number: 11021954
    Abstract: A method of recovering a room-and-pillar coal pillar by using external replacement supports. In the recovery of a room-and-pillar coal pillar, a cement material wall is formed by performing pouring around a coal pillar having a width to height ratio of less than 0.6, by means of a single-pillar sack arrangement technique, such that a coal pillar resource may be mined while a wall made from a cement filling material supports an overlying stratum. After mining is complete, a coal pillar goaf region is filled with the cement filling material, and after the cement filling material solidifies and is stable, the single pillar can be recovered.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 1, 2021
    Assignee: China University of Mining and Technology
    Inventors: Nan Zhou, Hengfeng Liu, Meng Li, Zhongya Wu, Jixiong Zhang
  • Publication number: 20210148205
    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.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 20, 2021
    Applicants: China University of Mining and Technology, Xuzhou Boan Science & Technology Development Co., Ltd
    Inventors: Baiquan LIN, Yang ZHAO, Wei YANG, Qingzhao LI
  • Publication number: 20210148228
    Abstract: The present invention discloses a mine exploitation, separation and filling and X exploitation mode, including four “exploitation, separation and filling and X” exploitation modes, namely an “exploitation, separation and filling and retaining” exploitation mode, an “exploitation, separation and filling and treatment” exploitation mode, an “exploitation, separation and filling and extraction” exploitation mode, and an “exploitation, separation and filling and control” exploitation mode. The selection of the “exploitation, separation and filling and X” exploitation mode is determined by actual engineering needs. A goaf filling rate is designed to meet the actual engineering needs of the mine, solve the technical problems in mine resource exploitation, and realize the objective of green, harmonious and safe exploitation of coal resources.
    Type: Application
    Filed: April 1, 2019
    Publication date: May 20, 2021
    Applicants: China University of Mining and Technology, XUZHOU ZHONGKUANG BACKFILLING & MINING TECHNOLOGY CO.,LTD
    Inventors: Jixiong ZHANG, Qiang ZHANG, Wenyue QI, Meng LI, Jianfeng SUN, Guohao MENG
  • Patent number: 11008859
    Abstract: The present invention discloses a method for analyzing coalbed methane geological selection of a multi-coalbed high ground stress region, including the following steps: defining the concepts of a favorable area, a sweet spot area, and a sweet spot section; carrying out the selection process on the favorable area, the sweet spot area and the sweet spot section in sequence; selecting different indicators for the characteristics of each stage, explicitly presenting key indicators and reference indicators at each stage, and providing an indicator with one-vote veto rights in the key indicators; and carrying out comprehensive analysis to obtain favorable planar areas and vertical intervals of coalbed methane exploration and development in the multi-coalbed high ground stress region. The method of the present invention provides instructions on coalbed methane geological selection of a multi-coalbed high ground stress region, and is of great significance for the development of coalbed methane.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: May 18, 2021
    Assignee: China University of Mining and Technology
    Inventors: Caifang Wu, Xiaolei Liu, Shunxi Liu, Mingyang Du, Shasha Zhang, Erchao Zhang