Device for testing coupling function of multi-physics field of core rock and use method of device

A technology of multi-physics field and test device, which is applied in the direction of material analysis using radiation, and can solve the problem of failure to consider the influence of multi-physics coupling effect on coal structure.

Active Publication Date: 2012-12-05
SHANDONG UNIV OF SCI & TECH
View PDF4 Cites 41 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to find that these CT detection devices only consider the static pressure adsorption

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 testing coupling function of multi-physics field of core rock and use method of device
  • Device for testing coupling function of multi-physics field of core rock and use method of device
  • Device for testing coupling function of multi-physics field of core rock and use method of device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Such as figure 1 A coal-rock multi-physics field coupling test device is shown, which is an airtight cylinder composed of a top cover 25, a cylinder 5 and a chassis 9; A plunger 16 for applying axial pressure to the coal test piece, four pressure grooves 6 are symmetrically arranged inside the cylinder body 5, and an air bag 8 and a convex rubber piston 3 are arranged inside each pressure groove 6; The airbags 8 are all provided with gas pipelines connected to an external high-pressure gas source, wherein the left-right symmetrical airbags 8 are connected to the third high-pressure gas source 24, and the front-back symmetrical airbags 8 are connected to the first high-pressure gas source 14. Valve 15 controls, as figure 2 As shown; the plunger 16 is provided with a gas pipeline for injecting gas into the inner cavity of the cylinder body 5, and the gas pipeline communicates with the external gas reference cylinder 17 and the second high-pressure gas source 18; the two...

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 discloses a device for testing a coupling function of a multi-physics field of core rock and a use method of the device. The device is a sealed barrel body which is composed of a top cover, a barrel body and a base disc; a column chamber and a temperature sensor are arranged in the device; a plunger is installed inside the column chamber; a pressure groove is arranged inside the barrel body; an airbag and a convex rubber piston are arranged inside the pressure groove; the airbag is connected with an external high pressure gas source; a gas pipeline for filling gas to the barrel body is arranged in the plunger; an acoustic emission sensor is installed inside the rubber piston; the acoustic emission sensor is connected with an external acoustic emission acquiring system; a gas discharge port is arranged on the base disc and is connected with a gas pressure difference transmitter, a gas mass flowmeter and a gas data acquirer; and electric heating wires are arranged inside the base disc. With the adoption of the device, not only the transformation and the acoustic emission activity of a coal test piece at different temperatures and stress states are recorded in real time, but also the absorption and desorption processes of coal-gas are carried out; and the visual microstructure characteristics of the coal test piece are quantified by using the CT (computed tomography) technology.

Description

technical field [0001] The invention relates to a test device that satisfies changes in rock macro and micro structures, in particular to a test device for the coupling effect of coal and rock multi-physics fields. Background technique [0002] In the process of mining deep coal resources, high in-situ stress, high temperature and high pore pressure in the deep formation are the main factors affecting the safe mining of coal mines, especially the rock mass in the mining area is always affected by the coupling effect of temperature field, seepage field and stress field . The specific performance is that the coal body changes from a three-way stress state to a two-way stress state, and the porosity, permeability, and heat conduction capacity of the coal body change accordingly. At the same time, the coal seam gas will flow to the mining area after excavation, which not only changes the initial pore pressure of the coal seam, but also changes the pore structure of the coal sea...

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): G01N23/04
Inventor 王春光蒋宇静谭云亮王刚冯吉利
Owner SHANDONG UNIV OF SCI & TECH
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