公开(公告)号：US12196723B2

公开(公告)日：2025-01-14

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

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：US10697281B2

公开(公告)日：2020-06-30

申请号：US16061799

申请日：2018-02-12

Applicant: Northeastern University

Inventor： Xiating Feng ,  Zhengwei Li ,  Xiwei Zhang ,  Jun Tian ,  Chengxiang Yang ,  Zhibin Yao ,  Qiang Wang ,  Yanhua Gong

IPC: E21B43/26 ,  F04B51/00

Abstract: A large-scale three-dimensional physical model test system for a deep cavern group comprises a base, an anti-deformation prestressed loading frame assembly, a load applying assembly, a model sample preparation and transportation assembly and a multifunctional hydraulic loading system assembly. The anti-deformation prestressed loading frame assembly and the model sample preparation and transportation assembly are both arranged on the base. The load applying assembly is arranged on the anti-deformation prestressed loading frame assembly, and the load applying assembly is connected with the multifunctional hydraulic loading system assembly. A model sample is subjected to long-time load holding, dynamic disturbance and displacement control overload under multi-surface multi-point cooperative control through cooperation between the load applying assembly and the multifunctional hydraulic loading system assembly.