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

IPC: E02D33/00 ,  E21F17/00

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.

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

IPC: G01S17/89 ,  G01S17/86 ,  G06T17/00 ,  G06T7/62 ,  G06T7/00 ,  G06T7/11 ,  G06T7/13

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.