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

Construction structure and process for controlling slope of underwater reef explosion slope through pre-splitting blasting

A technology of pre-splitting blasting and construction technology, which is applied to underwater structures, infrastructure engineering, blasting, etc., and can solve problems such as inability to meet construction requirements

Pending Publication Date: 2021-04-20
NO 3 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The immersed pipe foundation trench of the Dalian Bay subsea tunnel construction project adopts the leveling construction technology of the pile-leg screed ship. In order to meet the requirements of the leveling ship operation on the width of the foundation trench, the slope of the foundation trench in the blasting reef area needs to be controlled at the design slope 1 : Within 0.75, the existing construction technology cannot meet this construction requirement

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
  • Construction structure and process for controlling slope of underwater reef explosion slope through pre-splitting blasting
  • Construction structure and process for controlling slope of underwater reef explosion slope through pre-splitting blasting
  • Construction structure and process for controlling slope of underwater reef explosion slope through pre-splitting blasting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A construction technique of pre-splitting blasting to control the slope slope of underwater blasting reefs. The slope control adopts pre-splitting blasting, such as figure 1 , figure 2 As shown, the position of pre-splitting hole 1 is 2.5m away from the toe line of the slope, the super-depth of drilling is 1.6m, and the drilling spacing is 1.0m, the super-depth of the main blast hole 2 is 1.5m within the range of 2m from the toe line of the slope, and the rest Ultra-deep 1.0m, drilling distance 2.5m; main gun hole 2 is equipped with colloidal seismic source charges, charged according to 60-70% of the hole length, pre-splitting hole 1 charge is emulsified φ32 small charge, single row full On the steel bar, inject the medicine to the bottom of the hole; the pre-splitting hole 1 is detonated before the main gun hole 2; specifically, the following steps are included:

[0036] The first step: main gun hole construction

[0037] First, the main gun hole 2 is drilled acc...

Embodiment 2

[0056] The structure adopted in the construction technology of the pre-splitting blasting control underwater blasting reef slope slope described in a kind of embodiment 1, comprises pre-splitting hole 1, main gun hole 2 and the explosives packed in each hole, the position of said pre-splitting hole 1 3.2.5m away from the footline of the slope, the super-deep drilling is 1.6m, and the drilling distance is 1.0m. The drilling distance is 2.5m; the main blast hole 2 is equipped with colloidal seismic source charges, which are charged according to 60-70% of the hole length. Up and down the charge to the bottom of the hole; the pre-split hole 1 is detonated before the main gun hole 2.

[0057] The pre-splitting hole 1 is filled with a small medicine roll 4-1, which is connected in series with a detonating cord 4-2 and bound on a steel bar, and is detonated with a double detonator 4-3; each tube of the seismic source charge contains 5kg of explosives , the diameter of the powder col...

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 relates to the technical field of offshore construction, in particular to a construction structure and process for controlling the slope of an underwater reef explosion slope through pre-splitting blasting. The construction process for controlling the slope of the underwater reef explosion slope through pre-splitting blasting comprises the steps of main blast hole construction, pre-splitting hole construction, wiring operation, wiring protection and detonation. By means of the invention, the slope of the underwater reef explosion foundation trench slope can be effectively controlled; when the underwater foundation trench slope is constructed, the distance between the pre-splitting holes and the bottom edge line of the slope is controlled, so that the integrity of a slope rock body can be achieved after blasting, and the slope of the slope required by design can be achieved; the construction operation is simple and convenient; and the reef blasting amount, the foundation backfill amount and the construction cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of offshore construction, in particular to a construction structure and technology for controlling the slope slope of underwater blasting reefs by pre-splitting blasting. Background technique [0002] Conventional reef blasting operations do not have high requirements for slopes, as long as the slopes are stable. The immersed pipe foundation trench of the Dalian Bay subsea tunnel construction project adopts the leveling construction process of the pile-leg screed ship. In order to meet the requirements of the leveling ship operation on the width of the foundation trench, the slope of the foundation trench in the blasting reef area needs to be controlled at the design slope 1 : Within 0.75, the existing construction technology cannot meet this construction requirement. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art,...

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): F42D1/00F42D1/08F42D1/04F42D3/00E02D29/073E02D27/52E02D17/20
Inventor 李义彬林玉葵刘磊王威彭康于春宇王秀浩李军王向宇李松涛张敏郭启利
Owner NO 3 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY
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