Static blasting anti-punching device and blasting method

Abstract

The invention a static blasting anti-punching device and belongs to the technical field of engineering blasting. The static blasting anti-punching device comprises a connecting rod, an upper baffle and a lower baffle. The upper baffle sleeves the outer wall of the upper portion of the connecting rod and is detachably connected with the connecting rod and used for plugging a drilling opening. The lower baffle sleeves the outer wall of the bottom of the connecting rod. An anti-punching containing cavity for containing a static explosive is defined by the upper baffle, the side wall of a drilledhole and the lower baffle. A first fixing part for fixing the upper baffle is arranged on the connecting rod. The invention further provides a static blasting method. The static blasting anti-punchingdevice and the blasting method aim at solving the technical problem that a current market is in lack of a static blasting anti-punching device or blasting method which prevents punching, and is convenient to operate and good in blasting effect.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, and more specifically relates to a static blasting anti-punching device and a blasting method. Background technique [0002] During rock slope excavation and concrete crushing construction, sometimes due to site restrictions, explosive blasting cannot be used for crushing. Using traditional crushing machinery for excavation and crushing is not only inefficient, but sometimes the construction space is also limited. At this time, Choose a static crushing agent for static crushing. In order to speed up the construction process, the construction method of static blasting with a large aperture (generally 5cm to 10cm) is generally used for crushing, but the blasting with a large aperture static breaking agent will generally cause punching. Causes a more serious threat, causing the crushing effect to fail to meet the expected requirements. [0003] In order to avoid the occurrence of punc...

AI Technical Summary

Problems solved by technology

This blasting method adopts a special drilling method to make a drill hole with a small opening and a large inside. After placing the static breaking agent in the drill hole, the claws of the barbed cover are deep into the hole, so that It hooks the rock at the hole and plays the role of sealing the hole, but this method requires special drilling tools and ensures that the surface rock is not damaged. At the same time, the hole part cannot be filled with static breaking agent, otherwise it will affect the blasting effect and cause the The method is complex

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