公开(公告)号：US20220318462A1

公开(公告)日：2022-10-06

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

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：US20220284155A1

公开(公告)日：2022-09-08

申请号：US17630231

申请日：2020-10-22

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Zongqing ZHOU ,  Liping LI ,  Chunjin LIN ,  Shaoshuai SHI ,  Chenglu GAO ,  Cheche WEI ,  Chengshun SHANG ,  Songsong BAI

IPC: G06F30/23 ,  G06F30/13

Abstract: A rock mass engineering cross-scale simulation calculation method based on REV all-region coverage, including establishing a rock mass engineering scale calculation model of particles and joints, and providing the model with particle material parameters and contact parameters; performing model region division dividing the model into multiple finite elements, and performing all-region coverage and mesh division using the finite elements, wherein a volume of the finite element is equal to a representative elementary volume of a REV model; and applying boundary conditions, calculating force and motion information of finite element nodes using a continuous medium method, obtaining a failed finite element according to the node force and motion information, and calculating motion information of particles of the REV model in the failed finite element using a discontinuous medium method. According to the calculation method, the calculation efficiency is improved, and the accuracy of calculation results is ensured.

公开(公告)号：US20220341831A1

公开(公告)日：2022-10-27

申请号：US17642299

申请日：2020-07-13

Applicant: SHANDONG UNIVERSITY

Inventor： Bin LIU ,  Bo ZHANG ,  Hongtao ZHU ,  Mengmeng HU ,  Biao LI ,  Hanpeng WANG ,  Chunjin LIN

IPC: G01N3/56 ,  G01N33/24

Abstract: A horizontal jet-mechanical combined rock breaking test device and method. The device includes a horizontal base. One end of the horizontal base is provided with a multi-mode cutter head. A jet-mechanical combined cutter is provided on the multi-mode cutter head. The other end of the horizontal base is provided with a surrounding rock stress simulation bin for loading a rock sample. The multi-mode cutter head is connected to a driving mechanism, and the multi-mode cutter head is configured to advance and rotate horizontally along the horizontal base under the action of the driving mechanism, so that the jet-mechanical combined cutter is capable of acting on the rock sample.

公开(公告)号：US20170218757A1

公开(公告)日：2017-08-03

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

IPC: E21D9/10 ,  G01V1/04 ,  E21D9/00 ,  G01V1/16

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.

公开(公告)号：US20230167739A1

公开(公告)日：2023-06-01

申请号：US17779918

申请日：2021-06-18

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Daohong QIU ,  Yiguo XUE ,  Chunjin LIN ,  Yusong FU ,  Maoxin SU ,  Zhiqiang LI ,  Kang FU ,  Huimin GONG ,  Jianxiang FENG ,  Yang LIU

IPC: E21D9/00 ,  G01V1/52 ,  G01V1/50

CPC classification number: E21D9/003 ,  G01V1/52 ,  G01V1/50

Abstract: A method and system for real-time prediction of jamming in TBM tunneling. The method includes: (1) obtaining actually measured TSP physical property parameters by applying a TSP method; (2) analyzing value ranges and change trends of the TSP physical property parameters obtained in real time; (3) establishing a TSP physical property parameter sample database of a TBM tunnel; (4) establishing a mapping relationship between TSP physical property parameters and occurrence or not of jamming; (5) establishing a mapping relationship between time sequence values of tunneling parameters and occurrence or not of jamming; and (6) forecasting a TBM jamming risk in real time, and storing reliable data into the TSP physical property parameter sample database. The method and system can effectively obtain a state of surrounding rocks in time, thereby providing real-time forecasting of TBM tunneling jamming, avoiding occurrence of accidents to some extent, and improving the TBM tunneling efficiency.

公开(公告)号：US20230003917A1

公开(公告)日：2023-01-05

申请号：US17779816

申请日：2021-06-16

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Yiguo XUE ,  Maoxin SU ,  Chunjin LIN ,  Li GUAN ,  Daohong QIU ,  Zhiqiang LI ,  Yimin LIU ,  Peng WANG ,  Huimin GONG

IPC: G01V8/02

Abstract: A three-dimensional imaging method and system for surface comprehensive geophysical prospecting, the method includes: acquiring detection data of a plurality of two-dimensional profiles of a surface detection site; forming two-dimensional profile resistivity data by geophysical inversion of the detection data; performing three-dimensional coordinate conversion on the two-dimensional profile resistivity data to obtain resistivity data of a three-dimensional coordinate system; and converting the resistivity data of the three-dimensional coordinate system into a three-dimensional model by using a Kriging interpolation method.

公开(公告)号：US20220306536A1

公开(公告)日：2022-09-29

申请号：US17283333

申请日：2020-01-17

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Zhaofeng LI ,  Jian ZHANG ,  Chunjin LIN

IPC: C04B28/08 ,  C04B28/14 ,  C04B14/10 ,  C04B14/04 ,  B01D53/14 ,  B01D53/50 ,  B01D53/62 ,  C02F1/28

Abstract: A red mud utilization method based on co-processing of industrial exhaust gas, sewage treatment and an environment-friendly and high-performance civil functional material, belongs to the technical field of environmental science and cementitious material preparation, and relates to a preparation process of a solid waste-based cementitious material, specifically including the steps: preparing an environment-friendly and high-performance red mud-based civil functional material by using slag obtained after sewage treatment with red mud and other solid wastes in physical and chemical activation and high-temperature calcination methods. The compressive strength of a solid waste-based cementitious material prepared by using the method can reach 29 MPa, the leaching quantity (lower than 3.0 ppm) of toxic elements such as heavy metals is far lower than the national standard requirement, and a solid waste-based cementitious material with great performance can be prepared.

公开(公告)号：US20190360334A1

公开(公告)日：2019-11-28

申请号：US16072086

申请日：2018-01-10

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Zhenhao XU ,  Xintong WANG ,  Xin HUANG ,  Chunjin LIN ,  Dongdong PAN ,  Peng LIN

IPC: E21D11/00 ,  E21D11/15

Abstract: An intelligent and flexible steel arch protection device for rockfall and collapse of tunnels, including an arch main body system and a flexible protection system. The arch main body system includes an arched rigid high-strength steel frame and a base. The flexible protection system includes two parallel supporting rods which are oppositely arranged on the steel frame along the circular arc of the arch. Connecting rods are arranged between the two supporting rods at intervals, and the two ends of the connecting rods are fixed to the two supporting rods. The connecting rods are sleeved with guide rods and elastic devices are arranged between the guide rods and the supporting rods. A plurality of rolling shafts vertical to the axial direction of the two-way guide rods and connected with the two-way guide rods are arranged between the adjacent two-way guide rods, and the rolling shafts are sleeved with flexile rollers.