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公开(公告)号：US11761335B1
公开(公告)日：2023-09-19
申请号：US18311525
申请日：2023-05-03
申请人： LIAONING UNIVERSITY
发明人： Yishan Pan , Lianpeng Dai , Aiwen Wang , Jun Liu
IPC分类号： E21F17/18
CPC分类号： E21F17/185
摘要： 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. The method quantitatively achieves parameterized model selection of the bursting-preventing hydraulic support of roadway.
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2.发明授权公开(公告)号：US11492891B1
公开(公告)日：2022-11-08
申请号：US17673544
申请日：2022-02-16
发明人： Yishan Pan , Lianpeng Dai
摘要： A method for controlling drilling for rock burst prevention drilling in a coal mine roadway is provided. The method comprises: acquiring rock mechanical parameters of coal mass in surrounding rock of a roadway to be subjected to burst-preventing drilling construction, and calculating a surrounding rock critical softening depth, a critical ground stress and a critical mining peak stress for rock burst initiation in the roadway; calculating a critical mining-induced stress index of the roadway to realize quantification of burst risk; then determining critical conditions for drillhole burst and a quantitative relationship between the critical conditions for drillhole burst and for roadway rock burst initiation; quantitatively determining construction parameters of burst-preventing drillholes according to the surrounding rock critical softening depth, a critical plastic softening zone radius for drillhole burst, and the critical mining-induced stress index; and controlling a drilling machine to operate according to the determined construction parameters.
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公开(公告)号：US11187081B1
公开(公告)日：2021-11-30
申请号：US17072947
申请日：2020-10-16
发明人： Yishan Pan , Hongying Wang , Lianpeng Dai , Aiwen Wang , Zhicai Chen , Yonghui Xiao
IPC分类号： E21D21/00
摘要： 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.
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4.发明公开公开(公告)号：US20240230493A9
公开(公告)日：2024-07-11
申请号：US18354747
申请日：2023-07-19
申请人： Liaoning University
发明人： Yonghui XIAO , Yishan PAN , Xiangyu PAN , Jianzhuo ZHANG , Aiwen WANG , Lianpeng DAI
摘要： The present disclosure relates to the technical field of loading test devices, relating to a test device for arbitrarily directional combined loading and a method for using the loading test device. The device includes a test bench base assembly and a loading assembly. The loading assembly is arranged above the test bench base assembly. The loading assembly includes a loading oil cylinder and a swing base. The swing base can rotate with respect to the loading base, such that a direction of the loading oil cylinder can be adjusted to meet requirements of different loading angles. The test bench base assembly includes a first chute, and the loading base is connected to the first chute via a sliding fastening bolt.
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公开(公告)号：US20210396138A1
公开(公告)日：2021-12-23
申请号：US17072947
申请日：2020-10-16
发明人： Yishan Pan , Hongying Wang , Lianpeng Dai , Aiwen Wang , Zhicai Chen , Yonghui Xiao
IPC分类号： E21D21/00
摘要： 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.
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6.发明公开公开(公告)号：US20240133784A1
公开(公告)日：2024-04-25
申请号：US18354747
申请日：2023-07-18
申请人： Liaoning University
发明人： Yonghui XIAO , Yishan PAN , Xiangyu PAN , Jianzhuo ZHANG , Aiwen WANG , Lianpeng DAI
摘要： The present disclosure relates to the technical field of loading test devices, relating to a test device for arbitrarily directional combined loading and a method for using the loading test device. The device includes a test bench base assembly and a loading assembly. The loading assembly is arranged above the test bench base assembly. The loading assembly includes a loading oil cylinder and a swing base. The swing base can rotate with respect to the loading base, such that a direction of the loading oil cylinder can be adjusted to meet requirements of different loading angles. The test bench base assembly includes a first chute, and the loading base is connected to the first chute via a sliding fastening bolt.
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公开(公告)号：US11821317B1
公开(公告)日：2023-11-21
申请号：US18120626
申请日：2023-03-13
申请人： LIAONING UNIVERSITY
发明人： Yishan Pan , Hongrui Zhao , Kuiyong Liu , Hao Luo , Wei Wang , Yonghui Xiao
摘要： 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.
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公开(公告)号：US11630227B1
公开(公告)日：2023-04-18
申请号：US17860297
申请日：2022-07-08
申请人： LIAONING UNIVERSITY
发明人： Yishan Pan , Linlin Ding , Lujie Cao , Hanlin Zhang , Hao Luo
摘要： 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. The method includes: converting historical microseismic data monitored by a mine microseismic monitoring system into a microseismic waveform image, and then, converting the microseismic waveform image into a four-neighborhood microseismic waveform graph structure; performing area defining on the microseismic waveform graph structure, and extracting a similar feature layer of any node in the microseismic waveform graph structure based on the defined area; and taking the microseismic waveform image as an input layer of an improved convolutional neural network model, and sequentially connecting the input layer with the similar feature layer as well as a convolutional layer, a pooling layer, a fully connected layer and an output layer which are pre-configured for the improved convolutional neural network model to form a recognition model for recognizing the mine microseismic event. By using the recognition model designed in the present disclosure, the similar feature layer can be extracted, so that the mine microseismic event is effectively recognized.
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公开(公告)号：US20230001433A1
公开(公告)日：2023-01-05
申请号：US17819328
申请日：2022-08-12
发明人： 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
摘要： 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.
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公开(公告)号：US10774642B1
公开(公告)日：2020-09-15
申请号：US16429154
申请日：2019-06-03
申请人： LIAONING UNIVERSITY , Beijing Chengtian Hengye Coal Mine Equipment Co. Ltd , LIAONING TECHNICAL UNIVERSITY
发明人： Yishan Pan , Hongying Wang , Zhi Tang , Zhigao Zhang , Hongqi Shi
摘要： 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.
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