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1.发明申请公开(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
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.
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2.发明申请公开(公告)号：US20190285525A1
公开(公告)日：2019-09-19
申请号：US16314607
申请日：2017-09-13
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Shaoshuai SHI , Zongqing ZHOU , Hongliang LIU , Jie HU , Shangqu SUN , Jing WANG , Wenfeng TU , Zhijie WEN
Abstract: A test device and a test method of fractured rock mass collapse and blockfall and fracture water inrush includes a fractured rock mass preparation device, a water source loading device, a surrounding rock pressurization device and a slide rail, wherein the fractured rock mass preparation device is fixed at one end of the slide rail, and the water source loading device is fixed on the other side of the slide rail. An opening is formed in the rock mass water storage structure, and the size of the opening is adapted to the size of the fractured rock mass; the surrounding rock pressurization device includes one bracket and a pressurization structure arranged below the bracket, and a space for accommodating the fractured rock mass is reserved below the pressurization structure; and the bottom support and the bracket are both movably installed on the slide rail.
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公开(公告)号：US20220276383A1
公开(公告)日：2022-09-01
申请号：US17630336
申请日：2020-07-13
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Shaoshuai SHI , Hongliang LIU , Zongqing ZHOU , Jing WANG , Chengshuai QIN , Jie HU , Hongyun FAN , Guangyu YANG
Abstract: A system and method for rock mass structure detection and dangerous rock detection including a rock mass structure automated detection device and a server. The rock mass structure automated detection device includes a three-dimensional laser scanning device and a two-dimensional image acquisition device for respectively acquiring three-dimensional laser point cloud data and a two-dimensional image of a tunnel construction region. The server communicates with the rock mass structure automated detection device and includes a block structure three-dimensional modeling module and a block structure geometric stability analysis module. By considering the influence of the same group of structural faces in a rock mass, the effect of a newly-generated structural face subjected to blasting disturbance, and the finite dimension of a structural face, blocks in shapes of polygonal pyramid and polygonal frustum can be constructed to comply with engineering practices, and the geometric stability of any polygonal pyramid can be rapidly analyzed.
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公开(公告)号：US20210223085A1
公开(公告)日：2021-07-22
申请号：US17052821
申请日：2019-04-11
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Jing WANG , Shaoshuai SHI , Zongqing ZHOU , Hongliang LIU , Xingzhi BA , Shangqu SUN , Zhongdong FANG , Zhenhua LIU
Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance. The concentration tester is configured to detect the solution's concentration
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Patent Agency Ranking
公开(公告)号：US20220349147A1
公开(公告)日：2022-11-03
申请号：US17638298
申请日：2020-07-10
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Hongliang LIU , Zongqing ZHOU , Shaoshuai SHI , Zizheng SUN , Shen ZHOU , Jie HU , Chengshuai QIN , Hongyun FAN
Abstract: A platform, system, and method for simulating critical rock collapse of surrounding rock in underground engineering includes: four vertically arranged reaction walls defining a square reaction space, and a base mounted at a lower end opening of the wall; and a row of horizontally arranged stress loading plates at a side of each wall close to the reaction space, and a reaction beam above this space, where the reaction beam, the stress loading plate, and the base define a loading space, and the loading space is configured for placement of a surrounding rock simulation block to be tested; the stress loading plate capable of moving horizontally in a direction of the reaction wall, and the reaction beam capable of moving in a vertical direction, so as to load the surrounding rock simulation block; and the stress loading plate and the reaction beam being driven by linear motion units for movement.
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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.
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7.发明申请DEVICE AND METHOD FOR MEASURING TRUE TRIAXIAL CREEP OF GEOTECHNICAL ENGINEERING TEST BLOCK 有权用于测量地质工程测试块的真实三次曲线的装置和方法公开(公告)号：US20160054211A1
公开(公告)日：2016-02-25
申请号：US14780848
申请日：2013-12-02
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Hongliang LIU , Qinghan WANG , Shaoshuai SHI , Qianqing ZHANG , Zhenhao XU , Zongqing ZHOU , Jing WANG , Cong HU
IPC: G01N3/08
CPC classification number: G01N3/08 , G01N2203/0071 , G01N2203/0256
Abstract: Device and method for measuring true triaxial creep of a geotechnical engineering test block, including a supporting structure; the device includes four confining pressure-plates and upper-and-lower compression-plates forming an enclosed cavity for the test block; confining pressure-plates include two long confining pressure-plates and two short-confining pressure-plates, upper-and-lower compression-plates are rectangular top and bottom steel-plates, two L-shaped long confining pressure-plates bent towards the outer side lapped on two adjacent side faces of the bottom steel-plate, two L-shaped short-confining pressure-plates bent towards the outer side lapped on remaining two-side faces of the bottom steel-plate, and bottom ends of the short-confining pressure-plates are placed on the bottom steel-plate; top ends of long confining pressure-plates lapped on the top steel-plate, and top steel-plate leans against inner side faces of two short-confining pressure-plates; vertically pressure sensors corresponds to four confining pressure-plates and upper-and-lower compression-plates in the supporting structure, and grating shortrulers on pressure sensors.
Abstract translation: 用于测量岩土工程试块的真实三轴蠕变的装置和方法，包括支撑结构; 该装置包括形成用于测试块的封闭空腔的四个围压压板和上下压缩板; 围压板包括两个长约束压板和两个短围压板，上下压板为矩形顶板和底钢板，两个L形长围压板朝向外侧弯曲 在底部钢板的两个相邻侧面上搭接的两个L形的短围压板相对于底板钢的剩余的两个侧面上的外侧弯曲， 围压压板放置在底钢板上; 在顶部钢板上堆叠的长围压板的顶端，顶部钢板抵靠两个短围压板的内侧面; 垂直压力传感器对应于支撑结构中的四个围压压板和上下压缩板，以及压力传感器上的光栅短路。
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8.发明申请公开(公告)号：US20220284152A1
公开(公告)日：2022-09-08
申请号：US17630422
申请日：2020-10-22
Applicant: SHANDONG UNIVERSITY
Inventor： Shucai LI , Liping LI , Zongqing ZHOU , Chenglu GAO , Shaoshuai SHI , Shuai CHENG , Zhuohui LI , Daosheng ZHANG , Wenfeng TU , Meixia WANG
IPC: G06F30/20
Abstract: A peridynamics method and system for tunnel rock mass failure water inrush catastrophe simulation. A calculation model is discretized into material points, and a virtual boundary layers is set on an outer side of a boundary of the calculation model as an object to which boundary conditions are applied; a size of a horizon of the material points is selected to form a neighborhood matrix; a crustal stress is made equivalent to a stress boundary condition of the calculation model, a karst cave water pressure is made equivalent to a normal pressure, and a displacement constraint and tunnel support are converted into a displacement boundary condition; a speed and a displacement of the material point are solved, and local damage situations are recorded; and a tunnel construction process is simulated by material point dormancy after initial balance calculation is stable.
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公开(公告)号：US20190383714A1
公开(公告)日：2019-12-19
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
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.
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