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

Core sample sealing device in true triaxial test

A sealing device and true triaxial technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of rock sample stress concentration, etc., and achieve the effect of easy installation, solving the problem of rock sample stress concentration, and simple operation

Inactive Publication Date: 2009-08-05
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects in the packaging of rock samples in existing rock true triaxial samples, the purpose of the present invention is to provide a sealing device for rock samples in true triaxial tests. It adapts to the Motegi-type true triaxial loading method of "two rigid and one soft", and solves the problem of stress concentration of rock samples caused by blank corners

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
  • Core sample sealing device in true triaxial test
  • Core sample sealing device in true triaxial test
  • Core sample sealing device in true triaxial test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention will be further described:

[0019] A sealing device for rock samples in a true triaxial test, the device includes pressure pads 1-1, 1-2, 1-3, 1-4, and sealing rubber strips 2-1, 2-2, 2-3 , 2-, silica gel coating 3, rock sample 4, anti-friction pads 5-1, 5-2, 5-3, 5-4, the connection relationship is: according to figure 1 , 2 , 3, four bearing pads 1-1, 1-2, 1-3, 1-4 are respectively placed on the four ends of the rock sample 4, and each bearing pad 1-1, 1 One end of -2, 1-3, 1-4 is aligned with the rock sample 4 and connected end to end to form an interlocking type. Each pressure pad 1-1, 1-2, 1-3, 1-4 has a groove near the end of the rock sample 4, and a sealing rubber strip 2-1, 2-2, 2-3 , 2-4 are placed therein, and the sealing rubber strips 2-1, 2-2, 2-3, 2-4 are slightly longer than the groove. A piece of anti-friction pad 5- 1, 5-2, 5-3, 5-4, used to reduce the end friction and the fricti...

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 sealing device of a rock sample in a true triaxial test, which comprises bearing cushion blocks, sealing rubber bars, silica gel coating, a rock sample and antifriction gaskets, wherein the four bearing cushion blocks are respectively sequentially arranged on four end parts of the rock sample, which are performed rigid load in two directions, and one end of each bearing cushion block is in alignment with the rock sample in a mutually buckled way; the bearing cushion blocks and the end parts of the rock sample are provided with the antifriction gaskets, each antifriction gasket consist of a polyfluortetraethylene sheet, a red copper sheet and solid antifriction material such as graphite or zirconia, and the like, one side of the red copper sheet is stuck to the end part of the rock sample; and the rest two end parts of the rock sample, which are to be performed flexible load are coated with organic silicon gel and are covered by the bearing cushion blocks, and a sealed integer is formed by the rock sample dried in a oven and the bearing cushion blocks. The sealing device has simple structure and simple and convenient operation, is adapted to the two-rigidity one-flexibility load method of the mogi type and true triaxial type and solves the problem of stress concentration of the rock sample caused by blank corners.

Description

technical field [0001] The invention relates to the technical field of rock true triaxial testing, and more specifically, the invention relates to a rock sample sealing device in true triaxial testing, which is suitable for rock true triaxial testing. Background technique [0002] The rock true triaxial testing system (True triaxial testing system: TTS) can simulate the mechanical properties of rock under the condition of unequal triaxial stress. Compared with the conventional triaxial test, the true triaxial test can better explain the mechanical behavior of the rock under the natural stress state. [0003] Most of the rock samples for true triaxial tests are cuboids (or cubes) with six sides and can be subjected to uniform loads of different sizes in three orthogonal directions. According to the type of load, the true triaxial testing machine can be divided into rigid loading type, flexible loading type and mixed loading type. Among them, the mixed loading structure of Mo...

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): G01N3/02
Inventor 李小春石露冯夏庭
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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