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公开(公告)号：US11834949B2
公开(公告)日：2023-12-05
申请号：US18178385
申请日：2023-03-03
Inventor： Weiyao Guo , Lexin Chen , Yan Tan , Yunliang Tan , Tongbin Zhao
Abstract: A collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting provided by the disclosure includes the following steps: step 1, driving into a coal seam to release pressure; step 2, low roof pre-splitting during driving process; step 3, supporting of roadway surrounding rock and support reinforcement; step 4, floor destressing of the roadway; step 5, high roof pre-splitting before mining; step 6, destressing and supporting of the advanced roadway surrounding rock during the mining process of the working face. The collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting, and to carry out local pressure relief, roof pre-splitting and reinforcement support construction in the whole cycle of the coal working face in a progressive manner, so as to achieve the prevention and control of rock burst in the working face.
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公开(公告)号：US11821874B1
公开(公告)日：2023-11-21
申请号：US18308753
申请日：2023-04-28
Inventor： Xufei Gong , Lexin Chen , Yueying Zhang , Weiyao Guo , Chengguo Zhang , Yulong Zhang
CPC classification number: G01N3/04 , G01N3/24 , G01N2203/0025 , G01N2203/0098 , G01N2203/0226
Abstract: A dynamic load shearing test device and method based on a hopkinson bar system are provided in this disclosure, which relates to the technical field of rock detection tests. The device according to the disclosure includes a bearing frame, a carriage, a sample holding unit, a pressure environment generating unit, a sample switching unit, an incident bar and a transmission bar, and the test method includes following steps: test device assembly, device leveling, pre-test preparation, test conducting, sample angle switching and test device resetting. The disclosure has advantages that the cylindrical sample can be quickly fixed, a required temperature environment can be well maintained, the cylindrical sample can be better fixed in a high-pressure environment, rotation of the cylindrical sample is not hindered in a low-pressure environment, switching of test positions is facilitated, and test efficiency can be accelerated.
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公开(公告)号：US12276194B2
公开(公告)日：2025-04-15
申请号：US18818611
申请日：2024-08-29
Inventor： Weiyao Guo , Linpeng Xu , Lexin Chen , Yongqiang Zhao , Bo Li , Chengzhi Xia , Chun Zhu , Gan Li , Lei Zhang
Abstract: An automatic support device for resisting rock burst in mines is provided, which includes bases symmetrically distributed, sliding frames are slidably connected to the bases, hydraulic rods are fixedly connected to the bases, and telescopic ends of the hydraulic rods are fixedly connected to the adjacent sliding frames. The sliding frames are fixedly connected to brackets, and the brackets symmetrically distributed are provided with a main support plate, on which pushing rods are provided. The device can slow down the impact force of the device when rock burst occurs in the mine, at the same time, it plays a supporting role in the mine, ensuring the stability of the roof of the mine.
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公开(公告)号：US11860135B2
公开(公告)日：2024-01-02
申请号：US18317198
申请日：2023-05-15
Inventor： Weiyao Guo , Yueying Zhang , Lexin Chen , Dongxiao Zhang , Yunliang Tan , Tongbin Zhao
Abstract: A three-dimensional dynamic and static load test system for simulating deep roadway excavation and a method thereof are provided, which relates to the technical field of indoor simulation testing in underground engineering. The system includes a mobile platform, a box body, a support frame, a roadway excavation device, and a data monitoring unit. The system and method of the disclosure can reproduce the whole process of roadway excavation, simulate the multi-directional loading of deep roadway, and restore the real stress state of deep roadway under the influence of dynamic and static load superimposed disturbance. The problem of insufficient research under the condition of unidirectional static loading and lack of multi-directional dynamic and static loading in current large-scale experimental devices has been solved, and the stress and deformation of the surrounding rock of the roadway are reflected in real-time through the data monitoring unit.
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