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公开(公告)号：US11788930B2
公开(公告)日：2023-10-17
申请号：US17584474
申请日：2022-01-26
发明人： Guorui Feng , Jinwen Bai , Xudong Shi , Boqiang Cui , Xinyu Yang , Kai Wang , Haotian Wu
CPC分类号： G01M13/04 , G01L5/0009
摘要： A device and method for testing bearing capacity of single-row grouped pillars in a horizontal goaf under biaxial loading is disclosed. Four fixed rings are arranged on testing machine base, and have stands installed therein respectively, bottom ends of the stands are connected with the base, top ends are connected with transverse frame, sliding rails are arranged on two sides of the base; the vertical force loading devices are arranged at a lower part of transverse frame and the horizontal force loading devices are arranged at inner sides of side frame. Simultaneous loading on multiple coal samples, rock samples, filling body samples, concrete samples, coal-filling samples and/or rock-filling samples can be achieved, the overall bearing capacity of a single-row group pillar system in the horizontal goaf under the biaxial compression condition can be obtained, and the mutual influence relation between grouped pillar individuals in the horizontal goaf can be attained.
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2.发明授权公开(公告)号：US11703431B2
公开(公告)日：2023-07-18
申请号：US17585960
申请日：2022-01-27
发明人： Guorui Feng , Xudong Shi , Jinwen Bai , Xinyu Yang , Boqiang Cui , Xianjie Du
CPC分类号： G01N3/10 , G01N3/06 , G01N3/02 , G01N3/08 , G01N2203/0003 , G01N2203/0017 , G01N2203/0048 , G01N2203/04 , G01N2203/06
摘要： A device and a method for testing tensile resistance of multiple-row grouped pillars in an inclined goaf are provided. The bottoms of stands of the device are connected with a testing machine base, and the tops of the stands of the device are connected with a transverse frame; an upper slideable clamping seat and a lower slideable clamping seat are semi-cylindrical blocks, multiple lower loading jaws that are positioned to have a same central line are arranged on the lower slideable clamping seat, each of the lower loading jaws is opposite to a corresponding one of the upper loading jaws, the lower loading jaws are welded to the lower slideable clamping sea to test the tensile resistance of samples together; the upper part of the upper slideable clamping seat is connected with an upper pressure disk, and the lower slideable clamping seat is connected with a lower pressure disk.
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公开(公告)号：US20220244139A1
公开(公告)日：2022-08-04
申请号：US17584474
申请日：2022-01-26
发明人： Guorui Feng , Jinwen BAI , Xudong SHI , Boqiang CUI , Xinyu YANG , Kai WANG , Haotian WU
摘要： A device and method for testing bearing capacity of single-row grouped pillars in a horizontal goaf under biaxial loading is disclosed. Four fixed rings are arranged on testing machine base, and have stands installed therein respectively, bottom ends of the stands are connected with the base, top ends are connected with transverse frame, sliding rails are arranged on two sides of the base; the vertical force loading devices are arranged at a lower part of transverse frame and the horizontal force loading devices are arranged at inner sides of side frame. Simultaneous loading on multiple coal samples, rock samples, filling body samples, concrete samples, coal-filling samples and/or rock-filling samples can be achieved, the overall bearing capacity of a single-row group pillar system in the horizontal goaf under the biaxial compression condition can be obtained, and the mutual influence relation between grouped pillar individuals in the horizontal goaf can be attained.
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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
发明人： Guorui Feng , Kai Wang , Jinwen Bai , Jun Guo , Boqiang Cui , Xudong Shi , Haotian Wu , Xinyu Yang , Cheng Song
IPC分类号： G01N3/10
CPC分类号： G01N3/10 , G01N2203/0019
摘要： 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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公开(公告)号：US11473427B2
公开(公告)日：2022-10-18
申请号：US16537604
申请日：2019-08-11
发明人： Guorui Feng , Jiaqing Cui , Haina Jiang , Zhen Li , Cheng Song , Xiong Shen , Xiaohong Niu , Shengyong Hu , Yanna Han
IPC分类号： E21C41/18 , G06F30/20 , G06F17/18 , G06F30/333
摘要： A physical simulation test method for detecting a position of a ponding goaf in the excavation, which relates to physical detection of mines. This method includes: fabricating an experimental model of a composition similar to that of an excavating tunnel; fabricating a transient transmitting coil and receiving coil; connecting the coil to a wire and placing them in model A; connecting the coil to a transient electromagnetometer; injecting water into a trapezoidal goaf through a pre-buried plastic pipe; after the goaf is filled with water, immediately switching the transient electromagnetometer on to collect data; respectively transferring the coil to models B, C and D, injecting water and switching on the transient electromagnetometer to collect data; statistically analyzing detection and imaging results of the four models; and comparing the detection results with the actual data to determine detection accuracy and correction coefficient.
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公开(公告)号：US12098637B2
公开(公告)日：2024-09-24
申请号：US18595263
申请日：2024-03-04
发明人： Guorui Feng , Wei Guo , Tingye Qi , Zhu Li , Jiaqing Cui , Yekai Cui , Jingkai Ma
CPC分类号： E21C41/18 , E21C2100/00 , E21F15/00
摘要： An I-patterned filling method for an initial stage of coal mining based on roof fracture characteristics is provided. A relationship between an overburden load borne by a main roof and an overhang size is determined based on principle of virtual work and a surgery theory when an overhang distance of the main roof reaches an initial weighting interval to enter a plastic limit state with an advance of a working face to obtain the initial weighting interval. An initial fracturing interval of an immediate roof is obtained in the same way. According to a subsidence law of the main roof in an inverted hip roof form, the filling is performed at a key position around an internal plastic hinge line through I-patterned three-strip filling. Size parameters of the I-pattered filling are designed to prevent the immediate roof and the main roof from being fractured.
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7.发明授权公开(公告)号：US10809417B2
公开(公告)日：2020-10-20
申请号：US16234497
申请日：2018-12-27
发明人： Guorui Feng , Chunwang Zhang , Zhixin Jin , Rui Gao , Shengyong Hu , Zhen Li , Jiaqing Cui , Cheng Song , Xiaohong Niu
摘要： A three-dimensional analog simulation test system for gas-liquid countercurrent in an abandoned mine goaf includes a three-dimensional analog simulation device configured to simulate an analog environment of gas-liquid countercurrent in an abandoned mine goaf, a gas supply system, an automatic water pressure control system and a hydraulic loading system. The three-dimensional analog simulation device includes a reaction frame and a three-dimensional analog simulation chamber. The reaction frame includes a beam, a base and a column for connecting the beam and the base. The three-dimensional analog simulation chamber is arranged inside the reaction frame. The test system can be used to simulate the gas-liquid countercurrent in an abandoned mine goaf so as to study the evolution of water accumulation and gas enrichment in long-term abandonment of closed mines and the migration evolution rules of gas-liquid two-phase in abandoned mines with high gas density.
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8.发明授权公开(公告)号：US10690649B2
公开(公告)日：2020-06-23
申请号：US16217031
申请日：2018-12-11
发明人： Chunwang Zhang , Zhixin Jin , Guorui Feng , Xuanmin Song
摘要： A supercritical CO2 reactor and a test system of creepage, diffusion and erosion of rock mass. The supercritical CO2 reactor includes a reactor body having a test chamber, a heating layer arranged in a side wall of the reactor body, a temperature sensor and a pressure sensor arranged in the test chamber, a sealing cover configured to seal an opening of the reactor body, a fixing component arranged on the sealing cover, a hydraulic loading component configured to apply an axial load on the specimen. The reactor body is provided with an air inlet/outlet pipe configured to communicate the test chamber with external environment. The air inlet/outlet pipe is provided with a air valve, and the fixing component includes vertical guide bars, an upper pad and a lower pad slideably arranged on the vertical guide bars. The hydraulic loading component includes a oil-loading tank and an axial loading rod.
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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
发明人： Guorui Feng , Yijiang Fan , Pengfei Wang , Chenliang Hao , Xiaoze Wen , Jun Guo , Jinwen Bai , Tingye Qi , Jianan Liu , Linjun Zhu , Changquan Wu
CPC分类号： E21C41/18 , E21D20/028
摘要： 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：US11835491B2
公开(公告)日：2023-12-05
申请号：US17586061
申请日：2022-01-27
发明人： Guorui Feng , Tingye Qi , Jinwen Bai , Chao Song , Shuiyun Hou , Lirong Li , Yanqun Yang , Xudong Shi
CPC分类号： G01N3/10 , G01N33/24 , G01N3/02 , G01N3/12 , G01N2203/0019 , G01N2203/0048 , G01N2203/0254 , G01N2203/0264
摘要： A device and method for testing the bearing capacity of grouped pillars in the inclined goaf under coupled biaxial static and disturbance stresses are provided. Four protection rings are arranged on a base, each protection ring is installed with one machine frame therein, a bottom end of the machine frame is connected with the base and a top end thereof is connected with a transverse frame. Sliding rails are arranged on two sides of the base, side frames are installed on the sliding rails. A vertical force loading device is arranged at a bottom of a workbench, transverse force loading devices are arranged on inner sides of the side frames respectively. A force disturbance device is arranged at the bottom of the transverse frame. An upper slidable clamping seat and an upper pressure disk are arranged above the samples, and a lower slidable clamping seat is arranged below the samples.
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