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公开(公告)号：US11215542B2
公开(公告)日：2022-01-04
申请号：US16652961
申请日：2019-02-28
Inventor： Xuesheng Liu , Shilin Song , Yunliang Tan , Deyuan Fan , Jianguo Ning , Qingheng Gu , Ning Jiang , Jun Wang , Qiang Xu
Abstract: A rock mechanics test system with impact loading-confining pressure unloading and its usage method. The test system includes bearing frame unit, axial compression loading unit, impact loading unit and confining pressure loading unit. The bearing frame unit includes pedestal, column and cross beam. The column is vertically installed on both sides of the upper surface of the pedestal, and the cross beam is horizontally fixed on the upper part of the column. The axial compression loading unit is fixed at the middle position of the upper surface of the pedestal and is used to exert the axial bottom-up pressure to the sample. The impact loading unit is fixed on the cross beam and is used to exert the axial top-down impact load on the sample.
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公开(公告)号：US11078791B2
公开(公告)日：2021-08-03
申请号：US17110412
申请日：2020-12-03
Inventor： Xuesheng Liu , Deyuan Fan , Yunliang Tan , Kang Yang , Shilin Song , Yunhao Wu , Xuebin Li , Xin Wang
Abstract: It discloses a grouting bolt-cable composite beam and supporting method for advanced support of fractured surrounding rock in deep coal mines. The quadrate plates are fixed at both ends of the steel beam, the anchor cable holes are arranged in the center of the steel beam and the quadrate plates, and the diameter of anchor bolt holes should be larger than that of the grouting cables. There are four anchor bolt holes on each quadrate plate, and each anchor bolt hole corresponds to a anchor plate, the horizontal surface of the anchor plate is close to the quadrate plate, and the arc parts of the four anchor plates are all facing the center of the quadrate plate.
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公开(公告)号：US20210087931A1
公开(公告)日：2021-03-25
申请号：US17110412
申请日：2020-12-03
Inventor： Xuesheng Liu , Deyuan Fan , Yunliang Tan , Kang Yang , Shilin Song , Yunhao Wu , Xuebin Li , Xin Wang
Abstract: It discloses a grouting bolt-cable composite beam and supporting method for advanced support of fractured surrounding rock in deep coal mines. The quadrate plates are fixed at both ends of the steel beam, the anchor cable holes are arranged in the center of the steel beam and the quadrate plates, and the diameter of anchor bolt holes should be larger than that of the grouting cables. There are four anchor bolt holes on each quadrate plate, and each anchor bolt hole corresponds to a anchor plate, the horizontal surface of the anchor plate is close to the quadrate plate, and the arc parts of the four anchor plates are all facing the center of the quadrate plate.
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