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公开(公告)号:US20250154868A1
公开(公告)日:2025-05-15
申请号:US18425890
申请日:2024-01-29
Applicant: Taiyuan University of Technology
Inventor: Guorui Feng , Xiaoze Wen , Jun Guo , Ruipeng Qian , Wenbo Huang , Jie Zhang , Wenming Feng , Zi Wang , Xu Zhang
Abstract: An electric-pulse fracturing device for hard roof of coal mine based on a self-sealing water bag and an using method thereof are provided. The device includes a power switch, a charging power supply, a current limiting protection resistor, an energy storage capacitor and a high-voltage electric pulse switch connected in sequence. The energy storage capacitor is connected with an end of a gas gap switch, an other end of the gas gap switch is connected with an assembled self-sealing water bag high-voltage electric pulse electrode structure through a high-voltage cable, and the electrode structure is fixed through an assembly rod. The self-sealing water bag high-voltage electric pulse electrode structure includes a self-sealing water bag and an electrode structure capable of focusing shock wave energy, and the number of the self-sealing water bag high-voltage electric pulse electrode structure depends on fracturing effect.
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公开(公告)号:US10378352B2
公开(公告)日:2019-08-13
申请号:US15752361
申请日:2016-06-01
Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY
Inventor: Jiancheng Song , Muqin Tian , Chunyu Xu , Lingyan Lin , Jun Guo , Yayun Yu , Zexin Geng
IPC: E21C35/24 , E21F13/06 , G05B19/042 , G05B23/02
Abstract: A method for realizing a centralized control platform for large fully-mechanized coal mining face equipment is provided. In the method, on the basis of a coal cutter system, a hydraulic support system, a coal mining face transportation system, an emulsion pump station system, a mobile transformer substation system and a video monitoring system of the large fully-mechanized coal mining face equipment, real-time monitoring, centralized coordination control and information communication network are realized by a high-speed embedded computer UNO-3072A, a high-speed data acquisition card PCI-1716, a PowerBuilder front-end development platform, an SQLServer database, a Modbus TCP/IP communication protocol and an industrial Ethernet, thereby realizing centralized control over the large underground fully-mechanized coal mining face equipment. Automated production of fully-mechanized coal mining faces is realized.
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公开(公告)号:US11959383B2
公开(公告)日:2024-04-16
申请号:US17752842
申请日:2022-05-24
Applicant: Taiyuan University of Technology
Inventor: Guorui Feng , Yijiang Fan , Pengfei Wang , Chenliang Hao , Xiaoze Wen , Jun Guo , Jinwen Bai , Tingye Qi , Jianan Liu , Linjun Zhu , Changquan Wu
CPC classification number: E21C41/18 , E21D20/028
Abstract: A method for carrying out grouting between adjacent gateroads in internal-staggered split-level coal mining. A return air gateroad of a stoping face and an inlet air gateroad of a heading face are not on the same level. The return air gateroad of the stoping face is arranged along a roof of a coal seam. The inlet air gateroad of the heading face is arranged along a floor of the coal seam. There is a height difference between the return air gateroad and the inlet air gateroad in a vertical direction. During the construction process, the inlet air gateroad is excavated at a delay distance of 180-200 meters from the return air gateroad. The drilling and grouting are performed while excavating the roadway, where grouting holes are arranged in a single row. A device for implementing the method is also provided.
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公开(公告)号:US12025590B2
公开(公告)日:2024-07-02
申请号:US17835926
申请日:2022-06-08
Applicant: Taiyuan University of Technology
Inventor: Guorui Feng , Kai Wang , Jinwen Bai , Jun Guo , Boqiang Cui , Xudong Shi , Haotian Wu , Xinyu Yang , Cheng Song
IPC: G01N3/10
CPC classification number: G01N3/10 , G01N2203/0019
Abstract: A loading system for a Hopkinson pressure bar test under water-gas-temperature multi-field coupling action includes: a sample sealed cabin which includes sealing flanges, Y-shaped and high-temperature resistant sealing rings, and a sealed cabin body; a gas pressure loading device which includes a high-pressure gas tank, a pressure regulating valve, a second barometer, a second high-pressure valve and a first three-way valve connected in sequence; a water pressure loading device which includes an electric pressure test water pump, a water pressure gauge, an accumulator and a one-way valve connected in sequence; a temperature loading device which includes thermocouple heating rods, a temperature display and a thermocouple temperature control circuit board connected in sequence; and a dynamic and static combined loading device which includes an axial pressure loading device, an impact loading device and a Hopkinson pressure bar member.
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