Head wave inhibition blasting construction method based on electronic digital detonator

An electronic digital detonator and construction method technology, which is applied in blasting, earthwork drilling, mining equipment, etc., can solve the problems of reducing the peak vibration speed and the vibration speed of buildings cannot meet the specification requirements, so as to reduce the vibration speed and significantly improve the society. The effect of benefit and economic value

Inactive Publication Date: 2018-08-17
CHANGAN UNIV
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Problems solved by technology

The traditional drilling and blasting method uses non-electric detonators or electric detonators to detonate. Due to the limitation of the detonator segment, the blasting vibration speed is very high, while the digital detonator uses PLC programming, which can accurately control the delay time of the ...

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  • Head wave inhibition blasting construction method based on electronic digital detonator
  • Head wave inhibition blasting construction method based on electronic digital detonator
  • Head wave inhibition blasting construction method based on electronic digital detonator

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] The embodiment of the present invention provides a first-wave suppression blasting construction method based on an electronic digital detonator. The method includes the following steps:

[0022] Step 1, drilling and blasting scheme design: before the construction begins, determine the conventional items such as the excavation method, the form of the groove, the charge amount of a single hole, the advance footage, the parameters of the blast hole, as well...

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Abstract

The invention discloses a head wave inhibition blasting construction method based on an electronic digital detonator, and relates to the technical field of tunnel blasting construction. By applying the digital electronic detonator precise delaying hole-by-hole detonating and inter-hole phase dislocation vibration absorption technologies, the vibration speed peak value of a protection object can bereduced by 60%, moreover, the vibration peak value occurs to a first grooving hole, through destructive interference of vibration waves of vibration absorption holes and vibration waves of the firstgrooving hole, the vibration speed peak value of the protection object is further reduced by 30%, accordingly, the vibration speed of a critical structure object is greatly decreased, the supercritical structure object or ultra-shallow buried tunnel blasting construction technology is achieved, and the head wave inhibition blasting construction method has remarkable social benefits and economic value.

Description

technical field [0001] The invention relates to the technical field of tunnel blasting construction, in particular to a first-wave suppression blasting construction method based on an electronic digital detonator. Background technique [0002] With the acceleration of urbanization in China, the traffic in large central cities is becoming more and more congested, and the construction of urban underground transportation has been continuously intensified. Many shallow buried hard rock tunnel projects have appeared in central urban areas. Due to the huge advantages in economy and efficiency, the drill and blast method is a main method for excavating hard rock tunnels. In the face of complex construction environments in urban environments, such as ultra-shallow burial, passing through dense buildings on the surface, historical relics and historic sites etc. In order to ensure the safety of adjacent structures, control blasting measures must be taken in tunnel blasting constructio...

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Application Information

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IPC IPC(8): F42D1/00F42D3/04E21D9/00
CPCE21D9/006F42D1/00F42D3/04
Inventor 罗刚贾航航潘少康
Owner CHANGAN UNIV
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