Multielement three-dimensional safety protection method

A safety protection and three-dimensional technology, applied in blasting and other directions, can solve the problems of cumbersome construction, high cost, poor protection effect, etc., and achieve the effect of improving protection effect, improving coverage effect and fast construction speed

Inactive Publication Date: 2012-04-18
THE THIRD ENG OF CHINA RAILWAY 12TH BUREAU GROUP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of cumbersome construction, high cost and poor protection effect in traditional protection me

Method used

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  • Multielement three-dimensional safety protection method

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Embodiment Construction

[0011] The multi-dimensional three-dimensional safety protection method adopts the following steps: a. According to the terrain, landform and blasting engineering quantity of the blasting point, survey the cross-sectional view of the blasting point; Thickness, slope height and rock formation direction; c. Each hole 1 is covered with a quilt 2, and a sandbag 3 is sealed on the quilt 2; d. The SNS active flexible protective net 5 is fixed on the slope surface 4, and the slope Platform 6 fixes SNS passive flexible protective net 7; e, the back side of SNS passive flexible protective net 7 is fixed with steel pipe bamboo row frame 8, and steel pipe bamboo row frame 8 comprises horizontal and vertical steel pipe cross connection and vertical steel pipe is buried underground protection layer 9, protection The back side of the layer 9 is fixed with a diagonal brace 10, and the front side of the protective layer 9 is fixed with a bamboo frame plate 11. The front side of the existing r...

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Abstract

The invention relate to a multielement three-dimensional safety protection method, which is used for rock blasting in chasm expanding and excavating in the existing railway and highway, and solves the problems that in the traditional protection method adopted by the existing rock blasting, the construction is complex, the cost is high and the protection effect is poor. The method comprises the following steps of: a, surveying a cross sectional drawing of a blasting point; b, determining chasm expansion thickness, slope height and rock orientation; c, covering a cannon quilt on each porthole, and sealing and pressing each cannon quilt by a sandbag; d, fixing an SNS (Soft Net System) active soft protective net by a side slope surface, and fixing an SNS passive soft protective net by a side slope platform; e, fixing a steel pipe bamboo raft rack on the back side of the SNS passive soft protective net, wherein the steel pipe bamboo raft rack comprises transversal steel pipes and longitudinal steel pipes which are crisscrossed and connected, the longitudinal steel pipes are buried into an underground protection layer, the back side of the protection layer is fixed with an inclined support, and the front side of the protection layer is fixed with a bamboo rack plate. The invention has the advantages that the design is reasonable and reliable, the protection units have respective pertinence and are mutually linked, so that the protection effect is greatly improved, all protection materials can be turnover for many times, and the economic benefit is outstanding.

Description

technical field [0001] The invention relates to a method for protecting roadbed stonework blasting, in particular to a multi-dimensional safety protection method for stonework blasting for excavation of existing railways and highways. Background technique [0002] At present, with the rapid development of my country's railways, there are many reconstruction and expansion projects of existing railways. When the second, third and fourth lines are added, the cuttings are directly expanded and excavated on the basis of the original road cuttings. Controlled blasting excavation must be adopted in the rockwork sections, but The safety risk of blasting excavation is very high. If the surrounding environment is complex, the construction difficulty will be even greater. During blasting operations, the traditional safety protection measures generally adopt a single covering and frame protection scheme, which is costly, cumbersome to construct and poor in protection effect. Contents o...

Claims

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Application Information

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IPC IPC(8): F42D5/00
Inventor 汪晓臻郝亚伟李建军郭英
Owner THE THIRD ENG OF CHINA RAILWAY 12TH BUREAU GROUP
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