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A pre-splitting blasting damping method

A technology of pre-splitting blasting and shock-absorbing holes, which is applied in blasting, earthwork drilling, mining equipment, etc. It can solve the problem of limited effect of vibration velocity propagation blasting shock absorption, etc., and achieve good blasting effect and smooth tunnel contour surface , Improve the effect of the construction environment

Active Publication Date: 2022-04-15
GUANGXI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a pre-splitting blasting damping method, so as to overcome the disadvantage that the existing drill and blast method has a limited effect on blasting due to its inability to well block the propagation of shock velocity.

Method used

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  • A pre-splitting blasting damping method
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  • A pre-splitting blasting damping method

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Embodiment Construction

[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0023] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0024] Figure 1 to Figure 3 Shows a structural schematic diagram of a pre-splitting blasting damping method according to a preferred embodiment of the present invention, refer to figure 1 , the pre-splitting blasting damping method comprises the following steps:

[0025] Step 1: Drill holes on the face 1, and the outermost ring of holes is the peripheral holes. The blastholes on the face 1 can be distributed in a conven...

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PUM

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Abstract

The invention discloses a pre-splitting blasting shock absorbing method, which comprises the following steps: step 1, drilling blastholes on the face of the tunnel, the outermost circle of blastholes being peripheral holes; A shock-absorbing hole is drilled between adjacent blastholes; Step 3, blowing and cleaning all blastholes; Step 4, loading explosives in all blastholes; and Step 5, blasting after confirmation is correct. The present invention can separate the rock mass plane of the excavated face part from the surrounding rock mass within a certain depth through the shock absorbing holes and the prescribed blasting sequence to form a shock isolation ditch, effectively reducing the impact of blasting on the excavated hole contour. The vibration velocity of the rock mass is improved, thereby improving the shock absorption effect.

Description

technical field [0001] The invention relates to the technical field of blasting vibration control, in particular to a pre-splitting blasting vibration damping method. Background technique [0002] With the continuous improvement of our country's transportation system, the pace of construction of railways and highways is accelerating, so the situation that railway tunnels pass through urban and rural structures and buildings is becoming more and more frequent. For these special road sections, we generally use the drill and blast method for construction. Get the tunnel. In order to ensure the safety of surface structures, the drilling and blasting method must adopt blasting vibration control technology. The existing drill-and-blast method is still unable to well block the propagation of shock velocity, resulting in a limited effect on blasting shock absorption. For example, a Chinese patent application with an application number of 201210462523.9 and a publication number of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/00F42D3/04E21D9/00
Inventor 吴波兰扬斌杨建新蒋应鸿韩亚龙李建军卢育军吴传兵李江林
Owner GUANGXI UNIV
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