Supercharge Your Innovation With Domain-Expert AI Agents!

Test method based on ladder support of composite bearing body in deep roadway with different lithology

A test method and carrier technology, applied in the field of coal mining, can solve the problems of deformation and instability of surrounding rock, failure of support, etc., and achieve the effect of convenient assembly and obvious convergence.

Inactive Publication Date: 2020-08-21
NORTH CHINA INST OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's coal mines have entered the stage of deep mining. Although many deep mines choose to excavate roadways in areas with high lithological strength, problems such as serious deformation and instability of surrounding rocks and support failures continue to appear.

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
  • Test method based on ladder support of composite bearing body in deep roadway with different lithology
  • Test method based on ladder support of composite bearing body in deep roadway with different lithology
  • Test method based on ladder support of composite bearing body in deep roadway with different lithology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0037] see Figure 1-2 , the present invention provides a technical solution: based on the test method for step support of composite bearing bodies in deep roadways of different lithology, a plane stress loading experimental device is used, and the plane stress loading experimental device includes a plane model frame 2, a flange plate 3, and a jack 4 And support plate 5, the length, height and thickness of plane model frame 2 are respectively 1.8m, 1.2m and 0.3m, the quantity of jack 4 is no less than six, and one end of jack 4 is all connected with the middle part of one...

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 present invention discloses a test method for depth-based different-lithology roadway composite carrier echelon supporting. A plane stress loading experiment device is employed, the device comprises a planar model rack, a flange, a jack and a supporting plate, the arranged plane stress loading experiment device is convenient in assembling and simulates the stability and structural fracture development rules of the semicircular arch tunnels in a soft rock straight wall and a hard rock straight wall in a condition of a high-level stress loading. The method employed by the invention employs anon-supporting experiment method and a supporting experiment method which verify the bearing feature and structural fracture development rules of a layered supporting semicircular arch tunnel in a high-level stress.

Description

technical field [0001] The invention relates to the technical field related to the coal mining industry, in particular to a test method for stepped support based on a composite bearing body in deep roadways of different lithology. Background technique [0002] my country's coal mines have entered the stage of deep mining. Although many deep mines choose to excavate roadways in areas with high lithological strength, problems such as serious deformation and instability of surrounding rocks and support failures continue to appear. How to grasp the deformation and instability mechanism of deep roadway and control the stability of broken surrounding rock has become one of the key and difficult issues in the field of rock mechanics research. As early as the beginning of the 20th century, Terzaghi's theory and Platt's pressure arch theory appeared, which believed that the weight of loose rock mass in the collapsed arch of overlying rock was the force acting on the "surrounding rock...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
CPCG01M99/007
Inventor 彭瑞朱建明欧阳振华赵启峰陈莞阳王一哲王柳茜方媚龄谭林斌姜士源董秋琪邹文栋
Owner NORTH CHINA INST OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com