Rock blast hole blocking device and method for using device to block dry ice cracking rock blast hole

Abstract

The invention relates to the technical field of engineering blasting, in particular to a rock blast hole blocking device and a method for using the device to block a dry ice cracking rock blast hole.The rock blast hole blocking device comprises a blocking body, a plastic sleeve and a sleeve head, the blocking body is internally provided with a channel for a wire to penetrate through, and the channel is communicated with the upper and lower ends of the blocking body; the method for blocking the dry ice cracking rock blast hole comprises the following the steps that 1, the plastic sleeve is selected and sleeves the lower portion of the blocking body; 2, the wire penetrates into the channel and out of the lower end of the blocking body; 3, the rock blast hole blocking device is aligned withthe rock blast hole; 4, the rock blast hole blocking device is vertically fixed in the rock blast hole. According to the rock blast hole blocking device and the method for using the device to block the dry ice cracking rock blast hole, the friction force between the sleeve and the hole wall is increased so that the effect of blocking the rock blast hole by dry ice can be more significant, and theproblem that the blocking effect is poor is solved. Since the structure of the rock blast hole blocking device is simple, the blocking body is internally provided with the channel so that the wire canpenetrate into the blocking body, and the quality of dry ice rock breaking can be improved.

Description

technical field [0001] The invention relates to the technical field of engineering blasting, in particular to a rock blasthole plugging device and a method for plugging up dry ice cracking rock blastholes. Background technique [0002] In existing urban foundation pit excavation projects, more and more dry ice fracturing technology is used, based on the principle that carbon dioxide gas transforms into a liquid state under a certain high pressure. First, the liquid carbon dioxide is compressed into a cylindrical container by a high-pressure pump, and the safety film, rupture disc, heat conduction rod and sealing ring are installed, and the alloy cap is tightened to complete the preparation before blasting; Connect the wire to the power supply of the detonator. When the micro current passes through the high heat conduction rod, the high heat conduction rod will generate high temperature to break through the safety film, making the liquid carbon dioxide gasify instantly, the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention of the present invention is: in order to solve the existing problems in the prior art, that is, in the process of blasting, the blocking effect of the plugging device on the rock blast hole is not good, resulting in the problem of poor rock breaking effect, and in the process of knocking When using the cracking hole plugging device, it is very easy to cause the wire to be damaged when knocking, and then the catalyst cannot be excited, resulting in the problem of blind holes. The present invention provides a rock blast hole plugging device and its plugging dry ice cracking rock blast hole Methods

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