Efficient static blasting auxiliary orienting device for grooving and large hole drilling and construction method

Abstract

The invention discloses an efficient static blasting auxiliary orienting device for grooving and large hole drilling and a construction method. A left guiding plate and a right guiding plate are included and are vertically arranged and symmetrically arranged left and right. Each of the left guiding plate and the right guiding plate is sequentially provided with a front flat plate, a middle arc plate and a rear flat plate from front to back. The middle arc plates of the left guiding plate and the right guiding plate are opposite left and right, and a cylinder cavity is formed. The front side edges of the front flat plates of the left guiding plate and the right guiding plate are in contact, and a front V-shaped cavity is formed. The rear side edges of the rear flat plates of the left guiding plate and the right guiding plate are in contact, and a rear V-shaped cavity is formed. The front V-shaped cavity, the cylinder cavity and the rear V-shaped cavity are in communication. The front V-shaped cavity and the rear V-shaped cavity are in front-and-back symmetry relative to the center line of the cylinder cavity. A plugging device is arranged at the upper port positions of the left guiding plate and the right guiding plate and provided with water injectors for injecting water into the front V-shaped cavity, the cylinder cavity and the rear V-shaped cavity. The efficient static blasting auxiliary orienting device is simple in structure and convenient to operate, the guiding function is achieved in the static blasting process, the static blasting efficiency is improved, and good hole spraying preventing performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of static blasting, and in particular relates to a high-efficiency static blasting auxiliary orienting device and a construction method for slotting and large drilling. Background technique [0002] Static blasting mainly refers to the use of silent breaking agent (also known as static breaking agent). The main component of the blasting agent is an inorganic compound calcined at high temperature with calcium oxide as the main body, mixed with an appropriate amount of admixture and ground together with high expansion. Performance non-explosive crushing of powdered materials. Static blasting does not produce noise, vibration, dust and other public hazards, and can crush and disintegrate rocks or concrete structures calmly and safely. It has been widely used in the demolition of urban buildings and structures, mining of precious stones, and tunneling without blasting. [0003] The existing static blasting tech...

AI Technical Summary

Problems solved by technology

[0003] The existing static blasting technology mostly adopts small-aperture static blasting, and its drilling diameter is between 30 and 50 mm. Once the drilling diameter is too large or the temperature is too high, dangerous spray holes will easily occur (static breaking agent injection). The phenomenon of sudden ejection after entering the borehole), which affects the construction safety and construction progress, and the blasting direction is uncertain

At the same time, compared with large-aperture static blasting, small-aperture static blasting has problems such as small expansion pressure, slow response speed, and low construction efficiency.

At the same time, the hydration reaction of the crusher is greatly affected by the temperature. When it is below 0 ℃, the hydration reaction is too slow; at 40~50 ℃, the hydration reaction is fast, but it is easy to spray holes.

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