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

Tunneling anti-blocking hole protecting device and method for peripheral smooth blasting holes

A tunnel excavation and anti-blocking technology, which is applied in tunneling, blasting, earthwork drilling and mining, etc., can solve the problems of time-consuming and wasteful anti-blocking methods, and achieve the effects of enhanced blasting effects, reduced production costs, and reduced construction time

Inactive Publication Date: 2018-11-23
CHINA FIRST HIGHWAY ENG
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For large-section tunnels, there are a lot of blasting holes around (dozens in total), this anti-clogging method is time-consuming, and the plugging materials are basically used for one-time use, which is a serious waste

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
  • Tunneling anti-blocking hole protecting device and method for peripheral smooth blasting holes
  • Tunneling anti-blocking hole protecting device and method for peripheral smooth blasting holes
  • Tunneling anti-blocking hole protecting device and method for peripheral smooth blasting holes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0039] The peripheral hole anti-clogging series group hole protection device of the present invention is used to protect the peripheral holes of the reserved photoblast layer of large-section tunnels, and is applied in the drilling and blasting construction of the East Tianshan Extra-long Tunnel of the Xinjiang G575 Baha Highway Civil Engineering Project.

[0040] For example, at the stake number K20+306 in the left hole of the tunnel, firstly use the three-arm rock drilling rig to construct the peripheral light blasting holes on the light blasting layer reserved in the previous process according to the design drawings, and the depth of the blasting holes is about 4m , a diameter of about 40mm, and the number of peripheral holes is 51.

[0041] The protective plugging of peripheral holes specifically includes the following steps:

[0042] Preliminary grouping of blastholes: according to the principle of operation convenience, all 51 peripheral holes are divided into several gr...

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 provides a tunneling anti-blocking hole protecting device for peripheral smooth blasting holes. The device comprises a plurality of series-connection groups; each series-connection groupcomprises two self-locking plugs and a plurality of follow-up plugs, the follow-up plugs are arranged between the two self-locking plugs, every two adjacent follow-up plugs are in series connection with each other through an elastic element, and the adjacent self-locking plugs and follow-up plugs are in series connection through elastic elements. The device can achieve local self-locking and is convenient and reliable to use, the labor intensity of manually blocking the blastholes is reduced, the construction time is shortened, the work efficiency is improved, the device can be recycled and reused, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a hole protection device and a method thereof for preventing clogging of peripheral photoblast holes with a reserved photoblast layer in a large-section tunnel. Background technique [0002] The smooth blasting technology used in tunnel excavation can not only save costs, speed up the progress, but also easily ensure construction safety and the excavated tunnel outline is smooth and flat. It has been widely used in various types of rock tunnel construction at home and abroad. middle. Among them, the full-face one-time excavation technology with reserved light blasting layer is a new smooth surface controlled blasting technology in recent years. Advantages, gradually adopted in major domestic tunnel projects. [0003] This blasting method of reserving a photoblast layer has a certain process influence in the tunnel construction, that is, in the traditiona...

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): F42D1/00F42D1/08F42D1/18E21D9/00
CPCE21D9/006F42D1/00F42D1/08F42D1/18
Inventor 薛君刘拥华李启月李尊武马春德史瑞泽赵春雷郑静
Owner CHINA FIRST HIGHWAY ENG
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