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

Tunnel millisecond blasting method

A technology of controlled blasting and micro-difference, applied in blasting and other directions, can solve problems such as the inability to control and improve the effect of blasting seismic stress wave interference and vibration reduction, and the inability to achieve high-efficiency excavation of superhard rock with micro-vibration, so as to reduce the number of drilling holes. Operation labor time and excavation cost, the number of drilling holes and the use of explosives are reduced, and the effect of reducing the blasting shock velocity

Active Publication Date: 2018-03-06
北京住总集团有限责任公司 +1
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tunnel differential control blasting method, to solve the problem that the traditional method cannot control and improve the effect of the blasting seismic stress wave interference and vibration reduction of differential blasting and the inability to realize high-efficiency excavation of ultra-hard rock micro-vibration under complex geological conditions technical issues

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
  • Tunnel millisecond blasting method
  • Tunnel millisecond blasting method
  • Tunnel millisecond blasting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In engineering practice, the reasonable design of micro-differential blasting has obvious vibration reduction effect, and the efficiency of blasting and excavation has also been improved; the digital electronic detonator differential control blasting construction experience summarized in this embodiment is of great significance. Excavation technology will also provide basic verification data for future related research.

[0036] The technical solution of this embodiment: According to the similar shallow tunnel excavation blasting project and the current overall construction method of tunnel excavation, after the blasting scheme optimization and selection, the blasting scheme of a tunnel passing through the pedestrian street adopts the positive step method and partial blasting excavation method to carry out section excavation Blasting: During the blasting construction period, the tunnel excavation and blasting shall be adjusted accordingly according to the advance geologi...

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

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Depthaaaaaaaaaa
Apertureaaaaaaaaaa
Login to View More

Abstract

The invention discloses a tunnel millisecond blasting method. The method comprises the following steps of 1, distributing of blast holes, the number of the blast holes and the blasting parameters of the blast holes are designed, wherein the blasting parameters of the blast holes comprise hole diameters, hole distances, resistance lines and depth of a periphery hole, an reliever hole and a cut hole; 2, the blast holes are drilled in a tunnel boring face to be blasted; 3, explosive loading is carried out on the blast holes drilled in the tunnel boring face; 4, blocking and compacting is carriedout on the blast holes filled with explosive; 5, time delay setting is carried out on digital electronic detonators in all the blast holes; and 6, after the time delay setting is finished, wire connecting is carried out, and sequential detonation is conducted after determining that no errors exist. Compared with an existing millisecond blasting technology which is complex in blasting mechanism anddoes not have explicit theory and practice supports, the tunnel millisecond blasting method has the advantages that the different cut blasting methods are adopted for different surrounding rocks andfield conditions, so that the purposes of improving blasting efficiency, reducing the vibration speed and saving financial resources are achieved.

Description

technical field [0001] The invention belongs to the field of underground engineering construction, and relates to a tunnel differential control blasting method. Background technique [0002] Guiyang is a karst landform. Because the construction tunnel section passes through the building, and the average rock hardness is about 120Mpa through core sampling, the rock hardness is extremely high, resulting in a very slow progress of cold excavation construction; in the disclosed technical plan, the blasting process As follows: firstly, all the cutout eyes are detonated by the same millisecond delay detonator, that is, all the cutout eyes are detonated at the same time; then, the auxiliary eye close to the cutout is detonated by the same millisecond delay detonator, and then the same millisecond delay detonator is used to detonate The remaining auxiliary eye close to the peripheral eye; finally, the peripheral eye is detonated with the same segment millisecond delay detonator. Th...

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): F42D1/00F42D1/08F42D3/04
Inventor 赵永生李军涛常江隋国梁刘宝生肖振伟曹玖雷王树举何平远王海平欧琳曹强田磊
Owner 北京住总集团有限责任公司
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