Patents Assigned to Liaoning University
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Patent number: 11821317Abstract: An apparatus for improving the safety and efficiency of underground mining by issuing intelligent warnings of impending coal or rock dynamic disasters includes at least one coal or rock charge probe adaptable to a coal or rock face and configured to detect charge data generated by coal or rock cracking during a mining process, and a monitoring host electrically connected to the coal or rock charge probe and configured to receive the charge data and issue a warning of an impending coal or rock dynamic disaster when warranted by the charge data. In embodiments, the apparatus includes a plurality of channels, and is non-contacting and/or portable.Type: GrantFiled: March 13, 2023Date of Patent: November 21, 2023Assignee: LIAONING UNIVERSITYInventors: Yishan Pan, Hongrui Zhao, Kuiyong Liu, Hao Luo, Wei Wang, Yonghui Xiao
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Patent number: 11761335Abstract: A model selection method for a hydraulic support includes: determining a surrounding rock-support mutual feedback equilibrium curve under a first equivalent in-situ stress and a surrounding rock-support mutual feedback equilibrium curve under a second equivalent in-situ stress, according to the first equivalent in-situ stress, the second equivalent in-situ stress, a stress of a fracture zone on a softening zone under the first equivalent in-situ stress, and a stress of the fracture zone on the softening zone under the second equivalent in-situ stress; determining a support strength of a to-be-selected hydraulic support on the surrounding rock and a minimum expansion and contraction quantity required by a movable column according to the equilibrium curves; determining the residual burst energy that needs to be absorbed by the hydraulic support; and determining the hydraulic support matched with roadway.Type: GrantFiled: May 3, 2023Date of Patent: September 19, 2023Assignee: LIAONING UNIVERSITYInventors: Yishan Pan, Lianpeng Dai, Aiwen Wang, Jun Liu
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Patent number: 11630227Abstract: Embodiments of the present disclosure provide a method and system for recognizing a mine microseismic event, and belong to the field of mine data processing.Type: GrantFiled: July 8, 2022Date of Patent: April 18, 2023Assignee: LIAONING UNIVERSITYInventors: Yishan Pan, Linlin Ding, Lujie Cao, Hanlin Zhang, Hao Luo
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Publication number: 20230001433Abstract: The present disclosure provides an electrostatic nozzle and a controllable jet minimal quantity lubrication (MQL) grinding system. The electrostatic nozzle comprises a nozzle core; an upper nozzle body is connected above the nozzle core; a free space is formed between the upper nozzle body and the nozzle core for storing compressed air and reducing pressure; a lower nozzle body is connected below the nozzle core; a gas-liquid mixing chamber, an acceleration chamber and a nozzle outlet are sequentially arranged inside the nozzle core from top to bottom; and micro-bulges are uniformly distributed on an inner wall of the acceleration chamber.Type: ApplicationFiled: August 12, 2022Publication date: January 5, 2023Applicants: Qingdao University of Technology, Liaoning University of TechnologyInventors: Changhe LI, Dongzhou JIA, Huajun CAO, Xuefeng XU, Zhiguang HAN, Naiqing ZHANG, Huayang ZHAO, Min YANG, Yanbin ZHANG, Xiaoming WANG, Runze LI, Teng GAO, Wentao WU, Xin CUI, Yali HOU
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Patent number: 11492891Abstract: A method for controlling drilling for rock burst prevention drilling in a coal mine roadway is provided.Type: GrantFiled: February 16, 2022Date of Patent: November 8, 2022Assignees: LIAONING UNIVERSITY, NORTHEASTERN UNIVERSITYInventors: Yishan Pan, Lianpeng Dai
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Publication number: 20210396138Abstract: The present invention discloses a self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and a using method thereof. The anchor cable includes a steel strand (100), with an energy-absorbing and yielding terminal (200) and a stressed expansion-cracking terminal (300) respectively fixed to two ends of the steel strand, a bushing (400) sleeved outside the steel strand, a first lock (610) provided at one end of the steel strand and a second lock (620) provided at the other end of the steel strand; the stressed expansion-cracking terminal includes a self-anchored bushing (420) with a plurality of pre-splitting lines (440) arranged in the wall of the self-anchored bushing. Under stress, the wall of the self-anchored bushing cracks along the pre-splitting lines and bends and expands, so that it abuts against and is self-anchored to the edge of a sectional coal pillar at the outer side.Type: ApplicationFiled: October 16, 2020Publication date: December 23, 2021Applicants: LIAONING UNIVERSITY, Beijing Chengtian Hengye Coal Mine Equipment Co. LtdInventors: Yishan Pan, Hongying Wang, Lianpeng Dai, Aiwen Wang, Zhicai Chen, Yonghui Xiao
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Patent number: 11187081Abstract: The present invention discloses a self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and a using method thereof. The anchor cable includes a steel strand (100), with an energy-absorbing and yielding terminal (200) and a stressed expansion-cracking terminal (300) respectively fixed to two ends of the steel strand, a bushing (400) sleeved outside the steel strand, a first lock (610) provided at one end of the steel strand and a second lock (620) provided at the other end of the steel strand; the stressed expansion-cracking terminal includes a self-anchored bushing (420) with a plurality of pre-splitting lines (440) arranged in the wall of the self-anchored bushing. Under stress, the wall of the self-anchored bushing cracks along the pre-splitting lines and bends and expands, so that it abuts against and is self-anchored to the edge of a sectional coal pillar at the outer side.Type: GrantFiled: October 16, 2020Date of Patent: November 30, 2021Assignees: LIAONING UNIVERSITY, BEIJING CHENGTIAN HENGYE COAL MINE EQUIPMENT CO. LTDInventors: Yishan Pan, Hongying Wang, Lianpeng Dai, Aiwen Wang, Zhicai Chen, Yonghui Xiao
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Patent number: 10774642Abstract: A hydraulic support unit and a hydraulic support for anti-rock burst roadway. The hydraulic support unit includes a base, a top beam, and a hydraulic support column, the top beam is positioned above the base in a spaced manner; the hydraulic support column are disposed between the base and the top beam; a side guard plate and a first base hydraulic cylinder are disposed on the left side and right side of the base, the side guard plates are rotably connected to the base, the two ends of the first base hydraulic cylinder are hinged to the base and the side guard plate respectively, the first base hydraulic cylinder can drive the side guard plate to transit between a horizontal state and a vertical state, and the bottom surfaces of the side guard plates are flush with the bottom surface of the base in the horizontal state.Type: GrantFiled: June 3, 2019Date of Patent: September 15, 2020Assignees: Liaoning University, Beijing Chengtian Hengye Coal Mine Equipment Co. Ltd., Liaoning Technical UniversityInventors: Yishan Pan, Hongying Wang, Zhi Tang, Zhigao Zhang, Hongqi Shi