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公开(公告)号：US11371921B1
公开(公告)日：2022-06-28
申请号：US17533876
申请日：2021-11-23
发明人： Bowen Zheng , Shengwen Qi , Songfeng Guo , Xiaolin Huang , Ning Liang , Guangming Luo , Yu Zou , Shuaihua Song , Zhendong Cui , Lei Xue , Guoliang Li , Tianming Huang , Yiman Li , Yanhui Dong , Liheng Wang , Guiyang Ren , Qingze Hao , Libo Jiang , Xin Wang , Wenjiao Xiao
摘要： A clamp and a shear test device are provided, and relate to the technical field of rock mass mechanics tests. The clamp comprises a box body, wherein an opening is formed in one side of the box body, two clamping structures are oppositely arranged in the box body, a sample is arranged between the two clamping structures, each clamping structure comprises an adjusting mechanism, and a distance between the two clamping structures is adjusted through adjusting mechanisms of the two clamping structures. According to the clamp, real-time dynamic adjustment is conveniently and rapidly achieved, the stability of sample clamping is ensured, and therefore the requirement that the shear load can be truly and effectively transmitted to the sample through the box body is met.
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公开(公告)号：US12105058B2
公开(公告)日：2024-10-01
申请号：US17655413
申请日：2022-03-18
发明人： Lei Xue , Mengyang Zhai , Fengchang Bu , Xiaolin Huang , Ke Zhang , Chao Xu
摘要： A method and system for determining acoustic emission (AE) parameters of rock based on moment tensor analysis. The method includes: constructing, according to macroscopic mechanical parameters, a numerical model of a rock specimen to be tested; loading the numerical model through particle flow code software to simulate a failure process of the rock specimen to be tested, and identifying fracturing time and positions of microcracks when the PFC software loads the numerical model; determining, when the PFC software loads the numerical model, if rock grains of two sequentially generated microcracks include common rock grains, and an interval for generating the two microcracks is less than duration time of a present AE event, the two microcracks as a same AE event; taking geometric centers of all microcracks within a spatial range of an AE event as source positions of the corresponding AE event; and determining AE parameters of the AE event.
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公开(公告)号：US20220010681A1
公开(公告)日：2022-01-13
申请号：US17167363
申请日：2021-02-04
发明人： Songfeng Guo , Shengwen Qi , Shishu Zhang , Xingdong Ma , Guoqing Yuan , Xiuhua Wang , Bowen Zheng , Yu Zou , Xiaolin Huang , Ning Liang , Hang Li , Yubo Liu , Jianxian He , Xianglong Yao , Daping Tai , Guangming Luo
IPC分类号： E21D21/00
摘要： The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.
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4.发明授权公开(公告)号：US11215543B1
公开(公告)日：2022-01-04
申请号：US17361332
申请日：2021-06-29
发明人： Shengwen Qi , Bowen Zheng , Xiaolin Huang , Songfeng Guo , Ning Liang , Yu Zou , Guangming Luo , Luqing Zhang , Haijun Zhao , Lei Xue , Zhiqing Li , Jie Guo , Libo Jiang , Xin Wang
IPC分类号： G01N3/24 , G01N3/06 , G01N23/046 , G01N23/06 , G01N33/24
摘要： A rock mass shear test system for high-energy accelerator computed tomography (CT) scanning includes double horizontal loading devices, a first bearing device for bearing a static shear box, a second bearing device for bearing a dynamic shear box, and a normal loading device, etc. In the test, the double horizontal loading devices simultaneously apply an identical loading force to the rock mass, and the normal loading device applies a shear force to the rock mass. The double horizontal loading devices are provided in parallel and spaced apart, a loading force is applied in the horizontal direction, and a shear force is applied in the vertical direction, so that the loading cylinder and the rock mass sample are effectively prevented from interfering with each other during the accurate scanning process of the shearing progressive failure process of the rock mass.
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5.发明授权公开(公告)号：US11333590B1
公开(公告)日：2022-05-17
申请号：US17588216
申请日：2022-01-29
发明人： Guangming Luo , Shengwen Qi , Bowen Zheng , Yu Zou , Manchao He , Hui Zhou , Xiaolin Huang , Songfeng Guo , Ning Liang
摘要： An experimental system for simulating creep and stick-slip dislocations of a fault in a tunnel structure includes a box structure, a supporting device and a fault dislocation loading system. A friction effect layer, a first surrounding rock layer, a tunnel structure model, a second surrounding rock layer and an overburden pressure layer are sequentially arranged in the box structure from bottom to top. The bottom of the box structure is provided with a through hole. A plate assembly is provided on the through hole, and includes a first guide plate, a second guide plate and a loading plate. Inner sides of the first guide plate and the second guide plate are respectively provided with a first slide rail and a second slide rail. The loading plate moves along the first slide rail and the second slide rail under the action of the fault dislocation loading system.
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公开(公告)号：US11047782B1
公开(公告)日：2021-06-29
申请号：US17185972
申请日：2021-02-26
发明人： Bowen Zheng , Shengwen Qi , Qian Sheng , Xiaolin Huang , Ning Liang , Songfeng Guo , Guangming Luo , Chonglang Wang , Wenjiao Xiao
摘要： A test apparatus for simulating a seismic dynamic response of an underground cavern includes a loading frame, an overlying model and an underlying model of the underground cavern, a static loading device, a dynamic loading device and a measuring device. A vertical load and a horizontal load are separately applied by the static loading device to the overlying model to simulate real vertical and horizontal in-situ stresses of the in-situ underground cavern. A seismic dynamic load is applied by the dynamic loading device to the underlying model, and then acts on the overlying model to simulate a real seismic ground motion on the in-situ underground cavern. In this way, the present invention satisfies simulation requirements for the seismic dynamic response of the underground cavern to implement a high-fidelity simulation on the underground cavern through unified loading of the in-situ stress static load and the seismic dynamic load.
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公开(公告)号：US20230123452A1
公开(公告)日：2023-04-20
申请号：US17655413
申请日：2022-03-18
发明人： Lei Xue , Mengyang Zhai , Fengchang Bu , Xiaolin Huang , Ke Zhang , Chao Xu
摘要： A method and system for determining acoustic emission (AE) parameters of rock based on moment tensor analysis. The method includes: constructing, according to macroscopic mechanical parameters, a numerical model of a rock specimen to be tested; loading the numerical model through particle flow code software to simulate a failure process of the rock specimen to be tested, and identifying fracturing time and positions of microcracks when the PFC software loads the numerical model; determining, when the PFC software loads the numerical model, if rock grains of two sequentially generated microcracks include common rock grains, and an interval for generating the two microcracks is less than duration time of a present AE event, the two microcracks as a same AE event; taking geometric centers of all microcracks within a spatial range of an AE event as source positions of the corresponding AE event; and determining AE parameters of the AE event.
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公开(公告)号：US11536864B1
公开(公告)日：2022-12-27
申请号：US17855697
申请日：2022-06-30
发明人： Yu Zou , Songfeng Guo , Shengwen Qi , Xiaolin Huang , Bowen Zheng
摘要： A method for establishing a geostress field distribution of slopes in canyon areas includes: obtaining a persistence ratio of a fracture surface based on a structural plane trace length and a rock bridge length of the fracture surface, and then obtaining a fracture stage of a crack according to progressive failure characteristics of rock mass, combining a character of the fracture surface to obtain magnitude and direction of a maximum principal stress, and establishing the geostress field distribution. The method is simple to operate, does not need to carry out geostress testing, does not need a large amount of manpower and material resources, does not need redundant fund investment, and can simply and effectively obtain geostress field data. Moreover, combining with the geostress field inversion technology, a large-scale geostress field distribution condition can be obtained, which can provide a basis for engineering site selection and engineering rock mass stability determination.
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公开(公告)号：US11314910B1
公开(公告)日：2022-04-26
申请号：US17385361
申请日：2021-07-26
发明人： Lei Xue , Fengchang Bu , Mengyang Zhai , Xiaolin Huang , Chao Xu , Haoyu Wang
IPC分类号： G06F30/25 , G06F111/10
摘要： The present disclosure relates to a discrete element method (DEM)-based simulation method and system for acoustic emission (AE). The simulation method includes: arranging a monitoring point on a surface of a numerical model; monitoring a velocity waveform of the monitoring point; and analyzing the velocity waveform to obtain a hit, energy, and a b-value of AE. The method in the present disclosure can resolve problems of principle incompliance, poor authenticity, and high occupation of calculation resources in a traditional simulation method for AE.
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公开(公告)号：US11268383B2
公开(公告)日：2022-03-08
申请号：US17167363
申请日：2021-02-04
发明人： Songfeng Guo , Shengwen Qi , Shishu Zhang , Xingdong Ma , Guoqing Yuan , Xiuhua Wang , Bowen Zheng , Yu Zou , Xiaolin Huang , Ning Liang , Hang Li , Yubo Liu , Jianxian He , Xianglong Yao , Daping Tai , Guangming Luo
IPC分类号： E21D21/00
摘要： The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.
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