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Crest independent detonation method

A detonation method and wave crest technology, applied in the field of tunnel engineering, can solve the problems of slow construction progress and high cost, and achieve the effects of large blasting rupture angle, reduced vibration, and reduced blast hole clamping

Active Publication Date: 2021-07-30
中铁二局第二工程有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, although the non-blasting excavation reduces the impact on existing buildings (structures), the construction progress is slow and the cost is high

Method used

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0048] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The present invention relates to the field of tunnel engineering, and discloses a wave-crest independent detonation method. A cutout structure is arranged on the tunnel surface. The cutout structure has a resistance line W. The first cutout hole group, the second cutout hole group, the third A plurality of explosive placement points are arranged inside each cut hole group. The total amount of explosives in the cut hole is calculated by the empirical method, and the total amount of explosives is divided into several equal parts, which are respectively arranged at the explosive placement points. Each equal part of explosives is configured so that the volume of the blasted rock is basically the same. All explosive placement points are equipped with non-electric nonel detonators, multiple non-electric nonel detonators located in the same cut hole are arranged in series, and the non-electric nonel detonators are used for segment selection. The detonation design of the non-electric nonel detonator in its cutout structure and charge structure system effectively solves the technical problem of severely restricting the blasting excavation of tunnels or underground projects under sensitive environmental conditions.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a wave crest independent detonation method. Background technique [0002] For tunnels constructed by drilling and blasting method, weak blasting is often used in order to avoid or reduce the damage or impact of blasting vibration on existing buildings (structures) when they are constructed close to buildings (structures). The investigation and analysis of the current situation shows that it is very difficult to control the blasting vibration velocity within 1cm / s when the distance from the excavation face is less than 15m, especially in hard rock formations. When the vibration control standards cannot be met, non-explosive excavation methods can only be used, such as hydraulic hammer, static crushing, CO2 blasting technology, single-arm roadheader and other measures. However, although the non-blasting method of excavation reduces the impact on existing buildings (structures), t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/00F42D1/08
CPCF42D1/00F42D1/08
Inventor 杨家松刘斌许士成杨龙伟杨贵均邓明才刘有策张逢源胡兴
Owner 中铁二局第二工程有限公司
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