Apparatus of studying anchor bolt and surrounding rock mechanical properties in dynamic state and method of using apparatus

A technology of mechanical properties and bolts, applied in the field of geotechnical mechanics, can solve the problems of high-stress engineering surrounding rock bolt support failure, deep rock mass disasters, etc., saving test costs, easy operation, and avoiding direction deviation Effect

Active Publication Date: 2018-07-13
HUNAN UNIV OF SCI & TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under certain conditions, even small disturbances may induce the failure of high-stress engineering surrounding rock bolt support, thus causing deep rock mass disasters

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
  • Apparatus of studying anchor bolt and surrounding rock mechanical properties in dynamic state and method of using apparatus
  • Apparatus of studying anchor bolt and surrounding rock mechanical properties in dynamic state and method of using apparatus
  • Apparatus of studying anchor bolt and surrounding rock mechanical properties in dynamic state and method of using apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] as attached Figure 1-4 As shown, the dynamic research device for the mechanical properties of the bolt and surrounding rock includes casing, bolt, anchoring agent, and fixed end. The anchoring agent anchors the bolt in the casing. One end of the bolt is located in the casing, and the casing It has a longitudinal slot, the fixed end is fixedly connected with the anchor rod at the end through the slot, the fixed end is fixedly connected with the ground, and the impacted block is set in the casing port of the end.

[0038] The fixed end includes a fixed block, a nut, a gasket and a fixed seat. The fixed block is long and has a hole in the middle, and the anchor rod passes through the hole. The nut matches the thread of the anchor rod, and the nut and the gasket are installed on the anchor On the rod, the position of the fixed block is limited. The two ends of the fixed block are located outside the casing, and the two ends of the fixed block are fixedly connected with the...

Embodiment 2

[0054] The difference between this embodiment and Embodiment 1 is that the structure of the impacted block is different. In this embodiment, the end of the impacted block with a larger outer diameter is a cylinder, which accepts the insertion of the incident rod. In this embodiment, the impact protection and the impacted block are coaxially and stably connected with the bushing, the impact end, and the incident rod, which is beneficial to the transmission of impact force.

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 is intended to provide an apparatus simple to operate and high in practicality and capable of studying dynamic mechanical properties of a prestressed anchor bolt, as well as a method. The apparatus comprises a casing, an anchor bolt, an anchor agent, and a fixing end; the anchor agent helps immobilize the anchor bolt in the casing; one end of the anchor bolt is positioned in the casing; the casing is provided with a longitudinal slot; the fixing end is fixedly connected with the anchor bolt through the longitudinal slot; the fixing end is fixedly connected to a ground; an impacted block is nested in an opening of the casing. The apparatus and the method have the advantages that the limit is overcome that the existing studies on mechanical properties of anchor bolts only consider static load; mechanical properties of a prestressed anchor bolt under impact can be truly simulated and studied; it is convenient to observe and record instantaneous impact condition, and the apparatus is simple to operate, economical and practical; tests are more visual and real; as the impacted block is releasable and replaceable, it is convenient to mount the fixing end, and test cost is reduced.

Description

technical field [0001] The invention relates to the field of rock and soil mechanics, in particular to a device and method for studying the dynamic mechanical properties of bolts. Background technique [0002] Prestressed anchoring technology is to use anchor rods or anchor cables to reinforce the rock mass. It can significantly improve the surrounding rock structure and improve its stability. It is a simple, safe, reliable and cost-effective reinforcement technology that has been widely used in mining. Engineering, water conservancy and hydropower, railway transportation and urban construction and other fields, and have achieved good economic and social benefits. However, with the increase of the mining depth of rock mass engineering, the mining conditions tend to be more complicated, and the problems of bolt support failure are prominent, such as the disappearance of prestress, the falling off of the supporting plate and the breaking of the bolt, etc., which have become a ...

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 Applications(China)
IPC IPC(8): G01M7/08G01N3/30
CPCG01M7/08G01N3/30Y02A10/23
Inventor 吴秋红李羲
Owner HUNAN 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