Large-aperture static blasting anti-punching device and blasting method

Abstract

The invention provides a large-aperture static blasting anti-punching device and belongs to the technical field of the engineering blasting. The device comprises a connecting pipe, a rubber sleeve, anupper baffle, and a lower baffle, wherein the bottom of the connecting pipe is provided with a baffle for blocking a bottom port of the connecting pipe, and the middle and lower side walls of the connecting pipe are provided with water injection holes for allowing an inner chamber of the connecting pipe to communicate with a drill hole; the rubber sleeve sleeves the outer side wall of the connecting pipe for blocking outlets of the water injection holes; the upper baffle sleeves the outer side wall of the upper portion of the connecting pipe and is detachably connected with the connecting pipe for blocking a mouth of the drill hole; the lower baffle sleeves the outer side wall of the bottom of the connecting pipe; and the upper baffle, the side walls of the drill hole, and the lower baffle define an anti-punching accommodating chamber for containing a static crushing agent. The invention also provides a large-aperture static blasting method. The large-aperture static blasting anti-punching device and the blasting method aim to solve the technical problem that the market is short of a static blasting device capable of preventing punching, adding water and heating at present.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, and more specifically relates to a large-diameter static blasting anti-piercing device and a blasting method. Background technique [0002] In rocky slope excavation and concrete crushing construction, sometimes due to the limitation of the site, explosive blasting cannot be used for crushing, and the excavation efficiency of traditional crushing machinery is too low. At this time, static crushing agents are selected for crushing. When a large area of ​​hard rock is encountered, when small holes are used, manual drilling is often required on site, and the hole forming speed is slow and the construction efficiency is low. In order to speed up the construction process, when using a rock drill to form holes, it is necessary to adopt the construction method of static blasting with a super large aperture (aperture greater than 10cm). It shows that the larger the hole diameter is, the hig...

AI Technical Summary

Problems solved by technology

[0002] In rocky slope excavation and concrete crushing construction, sometimes due to the limitation of the site, explosive blasting cannot be used for crushing, and the excavation efficiency of traditional crushing machinery is too low. At this time, static crushing agent will be selected for crushing

When a large area of ​​hard rock is encountered, when small holes are used, manual drilling is often required on site, and the hole forming speed is slow and the construction efficiency is low.

In order to speed up the construction process, when using a rock drill to form holes, it is necessary to adopt the construction method of static blasting with a super large aperture (aperture greater than 10cm). It shows that the larger the hole diameter is, the higher the risk of spray holes will be. Once a spray hole occurs on site, the crushing effect of the breaking agent will be greatly reduced, or even the breaking effect will not be achieved, and it may cause damage to the construction personnel and machinery on site; In addition, the spray hole will generate a lot of smoke, which will pollute the urban construction environment; (2) When using ultra-large aperture crushing, it often needs to consume a large amount of crushing agent materials, which will increase the construction cost to a certain extent

[0003] In addition, in the reaction process of the breaking agent, sometimes it is necessary to add water to increase the expansion effect of the breaking agent. However, when water is injected directly, the water often stays on the surface of the breaking agent, which has no effect. At the same time, water is added directly without anti-punching measures. There is a certain risk, so it is necessary to design a static blasting device that is anti-punching and can be filled with water

Images