公开(公告)号：US11333590B1

公开(公告)日：2022-05-17

申请号：US17588216

申请日：2022-01-29

Applicant: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Guangming Luo ,  Shengwen Qi ,  Bowen Zheng ,  Yu Zou ,  Manchao He ,  Hui Zhou ,  Xiaolin Huang ,  Songfeng Guo ,  Ning Liang

IPC: G01N3/00 ,  G01N3/08 ,  G01N33/24 ,  G09B23/40

Abstract: 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.

公开(公告)号：US11047782B1

公开(公告)日：2021-06-29

申请号：US17185972

申请日：2021-02-26

Applicant: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Bowen Zheng ,  Shengwen Qi ,  Qian Sheng ,  Xiaolin Huang ,  Ning Liang ,  Songfeng Guo ,  Guangming Luo ,  Chonglang Wang ,  Wenjiao Xiao

IPC: G01N3/04 ,  G01N33/24

Abstract: 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.

公开(公告)号：US10781562B1

公开(公告)日：2020-09-22

申请号：US16900146

申请日：2020-06-12

Applicant: Institute of Geology and Geophysics, Chinese Academy of Sciences

Inventor： Zhiqing Li ,  Shengwen Qi

IPC: E01C21/00 ,  C04B28/34 ,  C04B24/12 ,  C04B22/12 ,  E01C3/00 ,  E01C3/04 ,  C09K17/44 ,  C04B111/00 ,  C04B103/00

Abstract: A construction method for reinforcing a loess embankment by combining microbial mineralization with phosphogypsum. The method includes: (1) placing Bacillus pasteurii in a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing a mixture, the microbial solution and water well, and adding the cementing solution and water to prepare an improving mixture; and (3) leveling and compacting an original ground; laying a geomembrane, the improving mixture and a geogrid; laying a last geomembrane on the top of the embankment after the embankment is laid, and then laying a roadbed. The method meets the improvement and construction requirements of loess embankments of high-grade highways, and reduces the stock of phosphogypsum, thereby reducing the occupation of cultivated land. The microbial improvement of the phosphogypsum achieves the immobilization of harmful elements, thereby reducing environmental pollution.