Method for establishing geostress field distribution of slopes in a canyon area

    公开(公告)号:US11536864B1

    公开(公告)日:2022-12-27

    申请号:US17855697

    申请日:2022-06-30

    IPC分类号: G01V1/30 G01V99/00

    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.

    Experimental system and method for simulating effect of fault stick-slip displacement on tunnel engineering

    公开(公告)号:US11085859B1

    公开(公告)日:2021-08-10

    申请号:US17226116

    申请日:2021-04-09

    IPC分类号: G01N3/08 E21F17/00

    摘要: An experimental system for simulating the effect of a fault stick-slip displacement on a tunnel engineering includes a model box system and a stick-slip loading system. The model box system is configured to simulate an interaction between two walls of a fault. The stick-slip loading system includes a first loading assembly, a second loading assembly and a bearing assembly. The first loading assembly includes a first loading device, and a first sample frame configured to place a main loading rock mass sample. The bearing assembly is arranged on two sides of the first sample frame. Sub-loading rock mass samples borne by the bearing assembly are configured to abut against the main loading rock mass sample under the action of the second loading assembly. A method for simulating the effect of a fault stick-slip displacement on a tunnel engineering based on the above system is further provided.