Method for reducing tunneling blasting vibration

A blasting vibration and tunneling technology, applied in blasting and other directions, can solve problems such as unfavorable building protection and blasting vibration, and achieve the effects of improving quality and efficiency, reducing damage and saving costs.

Pending Publication Date: 2022-06-21
CHINA MCC5 GROUP CORP
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Problems solved by technology

But at the same time, the blasting vibration generated by cutting blasting is relatively large, which is not conducive to the protection of nearby buildings.

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  • Method for reducing tunneling blasting vibration
  • Method for reducing tunneling blasting vibration

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Embodiment Construction

[0033] In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other under the condition of no conflict.

[0034] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. example limitations.

[0035] Refer below Figure 1 to Figure 2 To describe the method for reducing blasting vibration of tunnel driving provided according to some embodiments of the present invention.

[0036...

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Abstract

The invention provides a method for reducing tunneling blasting vibration, which comprises the following steps of: dividing slotting holes into a plurality of (two) groups or (three) groups according to different slotting modes; hole distribution trial blasting of the cut holes of one group is conducted; detecting blasting parameters of the hole distribution trial blasting; calculating interval time t; hole distribution trial explosion of at least two groups of cut holes is conducted again; detecting blasting parameters of each group of hole distribution trial blasting for the second time; and taking the minimum value of the interval time t of each group as the official blasting interval time of the rest group slotting holes. According to the invention, the wave crest and the wave trough of the vibration wave are superposed by utilizing the characteristics of the wave, so that a mutual counteracting effect is further achieved; blasting vibration wave crests are reduced, and blasting vibration wave troughs are filled up; control over blasting vibration is higher in reliability and operability, and therefore the quality and efficiency of blasting are improved; the workload of the blasting process is reduced, the construction speed is increased, and manpower, materials and energy consumption are saved.

Description

technical field [0001] The invention relates to the technical field of tunnel blasting, in particular to a method for reducing blasting vibration in tunnel excavation. Background technique [0002] With the rapid development of national infrastructure construction, subway and highway tunnels in municipal construction are often close to existing buildings. It is necessary to solve the problem of ensuring blasting effect, control the relationship between tunnel profile and reducing blasting vibration, ensure normal construction, and protect existing buildings. Buildings are protected from damage from tunnel blasting construction. [0003] At present, the main way to control blasting vibration is to use differential blasting technology, which is achieved by reducing the amount of single-stage detonating charge or extending the differential time. Blasting vibration can be greatly reduced. However, in the underground environment, there are few blasting free surfaces, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 罗艺鑫罗利
Owner CHINA MCC5 GROUP CORP
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