Device for measuring circumferential strain of rock specimen

A rock sample, hoop strain technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of inability to comprehensively measure the deformation of rock samples, the large space of the LVDT sensor fixed by the bracket, and the inability to apply rock sample deformation measurement, etc. problems, to achieve the effect of simple structure, accurate measurement results and convenient installation

Inactive Publication Date: 2017-02-22
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot be applied to the deformation measurement of rock samples in conventional triaxial tests due to the large space required for the bracket to fix the LVDT sensor.
In addition, since the LVDT sensor

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
  • Device for measuring circumferential strain of rock specimen

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example: such as figure 1 As shown, the device for measuring the circumferential strain of a rock sample in this embodiment includes a first fixing seat 1 and a second fixing seat 2;

[0031] The first fixing seat 1 and the second fixing seat 2 are respectively arranged on both sides of the upper surface of the cylindrical rock sample to be tested, and are arranged close to each other;

[0032] The bottom of the first fixing base 1 is set as an arc surface matching the outer circumference of the rock sample to be tested, and the bottom of the side close to the second fixing base 2 is provided with an arc-shaped bearing plate matching the outer circumference of the rock sample to be tested 11. The second fixing seat 2 is installed on the bearing plate 11, and the bottom of the second fixing seat 2 is set as an arc surface matching the upper surface of the bearing plate 11, and the first fixing seat 1 and the second fixing seat 2 pass between The elastic connector 3 is connec...

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 relates to a device for measuring the circumferential strain of a rock specimen. The device comprises a first fixed seat and a second fixed seat, wherein the first and second fixed seats are arranged on the two sides of the surface of the upper part of the cylindrical rock specimen to be measured respectively; a cambered force bearing plate is arranged at the bottom of the side, close to the second fixed seat, of the first fixed seat, the second fixed seat is mounted on the force bearing plate, and the first and second fixed seats are fixedly connected through an elastic connecting piece; the first and second fixed seats are tightly hooped on the periphery of the rock specimen to be measured through a hooping band; a linear displacement sensor is mounted on the first fixed seat, a circular deformation displacement pushrod is fixed on the second fixed seat, the linear displacement sensor points to the circular deformation displacement pushrod, and the detection end of the linear displacement sensor is pressed against the end part of the circular deformation displacement pushrod; the linear displacement sensor is externally connected with a background computer. The device has the advantages of simple structure, convenience for mounting, capability of comprehensively measuring the radial deformation of a rock and relatively high accuracy of a measurement result.

Description

technical field [0001] The invention belongs to the technical field of rock measurement, in particular to a device for measuring the hoop strain of a rock sample. Background technique [0002] The basic mechanical properties of rock are the basis of various rock engineering, and the deformation performance of rock is one of the important parameters to evaluate the basic mechanical properties of rock. Therefore, in the experiments of various rock samples, the deformation of rock samples is often measured. Measurement. At present, the methods for measuring rock deformation mainly include dial gauge method, strain gauge method and the most popular LVDT displacement sensor measurement method at this stage. Among them, the dial gauge method is to fix one end of the dial gauge at a fixed position, and the other end touches the rock surface to measure the deformation of the rock. It has the disadvantages of low measurement accuracy, limited measurement range, and cannot be used f...

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): G01B21/32G01N3/04G01N3/06
CPCG01B21/32G01N3/04G01N3/06
Inventor 胡大伟刘涛王冲魏天宇周辉张传庆杨凡杰卢景景朱勇张帆
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap