公开(公告)号：US11579055B2

公开(公告)日：2023-02-14

申请号：US16314460

申请日：2017-09-28

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Weimin Yang ,  Zongqing Zhou ,  Liping Li ,  Shaoshuai Shi ,  Meixia Wang ,  Shuai Cheng ,  Xuguang Chen ,  Chenglu Gao ,  Cong Liu

IPC: G01N3/12 ,  G01N3/02 ,  G01M99/00

Abstract: Fully automatic true triaxial tunnel and underground project model test system, including a triaxial loading device for loading model test piece, automatic data collection and analysis device, power system and control system; triaxial loading device includes test bench, vertical loading system, horizontal front and back, and left and right loading systems, and the vertical, horizontal front and back, and left and right loading systems apply three-way pressure to model test body; test bench functions for supporting, fixing, and providing counter-force; automatic data collection and analysis device includes micro optical fiber sensor embedded in model test piece, optical fiber monitoring system, micro pressure box and strain brick, and can collect multi-field information.

公开(公告)号：US11977825B2

公开(公告)日：2024-05-07

申请号：US17299100

申请日：2020-10-23

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Zongqing Zhou ,  Liping Li ,  Weimin Yang ,  Chunjin Lin ,  Shaoshuai Shi ,  Chenglu Gao ,  Chengshun Shang ,  Yang Geng ,  Songsong Bai

IPC: G06F30/25

CPC classification number: G06F30/25

Abstract: A discrete element method contact model building method includes: selecting a filling body in a disaster-causing structure to obtain a change rule of cumulative loss of the filling body; performing test simulation, and determining a relation function of each group of corresponding mesoscopic mechanical parameters in each time period and mesoscopic parameters of a DEM contact model representing a change rule of macroscopical parameters of the filling body; embedding each mesoscopic parameter relation function into an existing particle contact model, performing test simulation, and updating a fracture failure criterion of the contact model according to a corresponding relation of macro-mesoscopic strength during model failure; and based on a seepage failure indoor test, building a seepage failure discrete element calculation model, and simulating the seepage failure process of a rock and soil mass by using the obtained particle contact model and the fracture criterion of the particle contact model.

公开(公告)号：US10519771B2

公开(公告)日：2019-12-31

申请号：US15515475

申请日：2015-05-07

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Bin Liu ,  Xinji Xu ,  Jie Song ,  Lichao Nie ,  Lei Yang ,  Chunjin Lin ,  Weimin Yang

IPC: E21D9/11 ,  G01V1/30 ,  E21C37/20 ,  E21D9/10 ,  G01V1/16 ,  E21D9/00 ,  G01V1/04

Abstract: A rock breaking seismic source and active source three-dimensional seismic combined detection system uses a tunnel boring machine for three-dimensional seismic combined detection by active seismic source and rock breaking seismic source methods. Long-distance advanced prediction and position recognition of a geological anomalous body are realized using the active source seismic method. Machine construction is adjusted and optimized according to the detection result; real-time short-distance accurate prediction of the body is realized using the cutter head rock breaking vibration having weak energy but containing a high proportion of transverse wave components as seismic sources and adopting an unconventional rock breaking seismic source seism recording and handling method. An area surrounding rock quality to be excavated is represented and assessed. A comprehensive judgment is made to the geological condition in front of the working face with the results of active source and rock breaking seismic source three-dimensional seismic advanced detection.