Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Variable-stiffness elastic energy storage device and method thereby for testing rock instability

A technology of energy storage device and variable stiffness, which is applied in the direction of using a stable shear force to test the strength of materials, measuring devices, and using a stable tension/pressure test to test the strength of materials to reduce friction.

Active Publication Date: 2019-01-22
NORTHEASTERN UNIV
View PDF9 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of testing instruments and corresponding testing methods for rock instability testing in the market.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable-stiffness elastic energy storage device and method thereby for testing rock instability
  • Variable-stiffness elastic energy storage device and method thereby for testing rock instability
  • Variable-stiffness elastic energy storage device and method thereby for testing rock instability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 2As shown, a rock joint shear instability testing machine is an application of a variable stiffness elastic energy storage device on a conventional shear testing machine. It is composed of a conventional rock joint shear instrument and a variable stiffness elastic energy storage device, including a rigid frame structure 11, a variable stiffness elastic energy storage device 12, a tangential loading mechanism 13, a normal loading mechanism 14, an upper clamp 15 and a lower clamp 16 and block 17. The normal loading mechanism 14 is fixed on the upper part of the rigid frame structure 11 , the tangential loading mechanism 13 is fixed on one end of the rigid frame structure 11 , and the spacer 17 is fixed on the lower part of the rigid frame structure 11 . One end of the variable stiffness elastic energy storage device 12 is rigidly connected to the tangential loading mechanism 13 , and the other end is in contact with the lower clamp 16 .

[0043] The spec...

Embodiment 2

[0059] Such as image 3 As shown, a rock uniaxial compression instability testing machine is the application of the variable stiffness elastic energy storage device on the conventional uniaxial compression testing machine, and is composed of the conventional rock uniaxial compression testing machine and the variable stiffness elastic energy storage device , comprising a body frame 18, a variable stiffness elastic energy storage device 12, a loading cylinder 19, and a spacer 17. The loading oil cylinder 19 and the spacer 17 are fixed on the upper and lower ends of the body frame 18 respectively. One end of the variable stiffness elastic energy storage device 12 is in contact with the loading cylinder 19, and the other end is in contact with the upper surface of the rock sample, which is placed on the pad 17 of the testing machine.

[0060] The specific implementation plan is as follows:

[0061] Step 1: First, prepare a standard cylindrical rock sample;

[0062] Step 2: Plac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of rock engineering, and particularly relates to a variable-stiffness elastic energy storage device and a method thereby for testing rock instability. Theinvention has the following technical scheme that the variable-stiffness elastic energy storage device comprises a pressure head, a guide rod, a base, a gasket and a disc spring, wherein the guide rodis vertically installed on the center of the base; the gasket and the disc spring are independently sheathed to the guide rod; the end of the guide rod is provided with a guide hole; the center of the pressure head is provided with a guide post; the guide post and the guide hole are matched; and the guide post is placed in the guide hole. By use of the variable-stiffness elastic energy storage device and the method thereby for testing rock instability, the variable-stiffness elastic energy storage device has the characteristics of small land occupation, large stiffness regulation range, convenience in processing and manufacture, low maintenance and repairing cost and long service life and can be combined with various rock mechanical test machines, and an instability testing method is adopted to test rock instability characteristics under different test conditions.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a variable stiffness elastic energy storage device and a method for testing rock instability using the same. Background technique [0002] The current rock mechanics testing machines are usually rigid or servo-controlled testing machines. People often focus on obtaining a constant deformation rate and achieving a stable loading process, while ignoring the rock instability itself during the loading process. Significance. In fact, whether it is the rupture of crustal rocks and dislocation of faults in nature, or rock bursts and rock bursts caused by rock engineering, most natural and engineering disasters show the phenomenon of rock instability and destruction. Among them, the instability and slippage of geological faults, rockbursts in mine pillars and tunnels often lead to serious natural disasters and engineering accidents, resulting in heavy casual...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N3/24G01N3/12G01N3/08
CPCG01N3/08G01N3/12G01N3/24G01N2203/0019G01N2203/0025G01N2203/0075G01N2203/0252G01N2203/0256
Inventor 朱万成董宇航刘溪鸽徐曾和于永军代凤程关文
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com