公开(公告)号：US20240230495A1

公开(公告)日：2024-07-11

申请号：US17912926

申请日：2022-07-22

Applicant: Northeastern University

Inventor： Xiating FENG ,  Xiwei ZHANG ,  Lei SHI ,  Zhibin YAO

IPC: G01N3/30 ,  G01N3/10 ,  G01N33/24

CPC classification number: G01N3/30 ,  G01N3/10 ,  G01N33/24 ,  G01N2203/001 ,  G01N2203/0019 ,  G01N2203/0026 ,  G01N2203/0044 ,  G01N2203/0048 ,  G01N2203/0053 ,  G01N2203/0067 ,  G01N2203/0256 ,  G01N2203/0298 ,  G01N2203/0605 ,  G01N2203/0611 ,  G01N2203/0635 ,  G01N2203/0641 ,  G01N2203/0658

Abstract: The invention relates to a large-scale three-dimensional physical simulation test system for the whole development process of deep engineering rock burst. A CO2 blast cracking device, a dynamic fiber grating and ultrasonic probes are pre-embedded in a physical model sample of similar materials. Acoustic emission probes are pre-mounted on the boundary of a sample. A tunnel excavated in the sample is provided with a three-way acceleration sensor and an industrial endoscope. A sample 3D printer and a drop hammer impact device are arranged outside the three-dimensional static stress loading device. A hydraulic oil source and a controller are arranged outside the three-dimensional static stress loading device and mounted on the ground. The controller is connected with a computer.

公开(公告)号：US20250086333A1

公开(公告)日：2025-03-13

申请号：US18031457

申请日：2023-02-08

Applicant: Northeastern University

Inventor： Xiwei ZHANG ,  Xiating FENG ,  Chunyuan XUE ,  Lei SHI

IPC: G06F30/13 ,  F15B1/04 ,  F15B15/14 ,  G01M99/00

Abstract: Provided is a three-dimensional loading structure of an ultra-large physical simulation facility for deep engineering disasters. The three-dimensional loading structure comprises a horizontal ultra-large reaction frame, a vertical ultra-large reaction frame, ultra-long stroke lifting and locking hydraulic cylinders, five array distributed hydraulic actuator groups and a linear distributed hydraulic actuator group, wherein the horizontal ultra-large reaction frame adopts a frame structure being formed by splicing eight segments of arch beams, circular in an outer part and square in an inner part, and wrapped with prestressed carbon fibers, and the vertical ultra-large reaction frame adopts a double-beam four-column preload frame structure; the five array distributed hydraulic actuator groups are distributed around the horizontal ultra-large reaction frame and at a top of the vertical ultra-large reaction frame, and the linear distributed hydraulic actuator group is located at a center of a bottom of the vertical ultra-large reaction frame.

公开(公告)号：US20240319047A1

公开(公告)日：2024-09-26

申请号：US18028352

申请日：2023-02-08

Applicant: Northeastern University

Inventor： Xiating FENG ,  Xiwei ZHANG ,  Lei SHI

IPC: G01M99/00 ,  E21F17/00

CPC classification number: G01M99/005 ,  E21F17/00

Abstract: Provided is an ultra-large physical simulation facility for deep engineering disasters, including a long-time large-load loading system for a geological model, a 3D printing system of a deep oil, gas and water multiphase multi-component complex geological body model, a high-temperature-chemical-multiphase fluid collaborative injection, monitoring and control system, a robot excavation and monitoring system for a complex engineering structure in a model under deep geological environment, an intelligent ventilation system for a deep metal mine complex drilling, mining and transferring network, an intelligent filling system for a deep metal mine ultra-large stope, a deep-well enhanced geothermal safe intelligent mining system, an all-spatial-temporal intelligent high-precision monitoring system for an excavation and fracture process of a large-scale geological model, and an ultra-large multi-task intelligent collaborative main control and digital twin system for physical simulation tests.

公开(公告)号：US20180275034A1

公开(公告)日：2018-09-27

申请号：US15558958

申请日：2017-03-28

Applicant: NORTHEASTERN UNIVERSITY

Inventor： Xia ting FENG ,  Xi wei ZHANG ,  Rui KONG ,  Cheng xiang YANG ,  Dong hui MA ,  Shuai PENG ,  Lei SHI ,  Zhi bin YAO ,  Jun TIAN

IPC: G01N3/307

CPC classification number: G01N3/307 ,  G01M7/08 ,  G01N2203/0055 ,  G01N2203/0067 ,  G01N2203/0098 ,  G01N2203/0232

Abstract: A high-pressure true triaxial test apparatus with capacity of low-frequency disturbance and high-speed impact includes static and dynamic loading frames, four static loading actuators, two dynamic loading actuators and an SHPB mechanism, wherein all actuators are connected with a hydraulic station system; a hollow way is formed in the axial center of each piston shaft of the dynamic loading actuators, a dynamic pressure sensor adopting a hollow ring structure is mounted at the end part of each piston shaft, and the SHPB mechanism applies a high-speed impact load on a rock sample through the dynamic pressure sensors respectively; and the dynamic loading actuators adopt a static pressure oilway balance support sealing manner and are connected with the hydraulic station system, each oilway is provided with an energy accumulator, and flow is increased by the servo valves to drive pistons to perform dynamic response.