Charging rod constructed by borehole-blasting method

Abstract

The invention discloses a charging rod constructed by a borehole-blasting method. The charging rod comprises a front end charging barrel, a tail end charging barrel and a plurality of standard charging barrels. The front end charging barrel is installed at the deep inside of a drill hole, the tail end charging barrel is installed at a drill hole end opening, the front end charging barrel is connected with the standard charging barrels by adopting a locking device, the standard charging barrels are connected with one another by adopting the locking device, and the standard charging barrels areconnected with the tail end charging barrel by adopting the locking device. The front end charging barrel, the tail end charging barrel and the standard charging barrels comprise upper barrels and lower barrels, and the upper barrels are connected with the lower barrels in a clamping-closing mode through clamping-closing fixing devices. Explosive installation grooves for installing explosives areformed in the lower barrels, the explosive installation grooves are slidably formed in the lower barrels, positions of the explosive installation grooves in the lower barrels can be adjusted through asliding limiting assembly, and a plurality of explosive fixing devices for fixing the positions of the explosives are arranged in the explosive installation grooves. The charging rod constructed by the borehole-blasting method has the characteristics of reasonable design and simple and convenient use.

Description

technical field [0001] The invention belongs to the technical field of blasting construction tools, and in particular relates to a drilling and blasting construction charge rod. Background technique [0002] In recent years, with the rapid development of the domestic economy, my country's railway and highway industries have developed rapidly. In the northwest of my country, there are many mountains. Therefore, during the construction of railways and highways, it is necessary to open tunnels to pass through the mountains. In the opening process of the tunnel, the blasting method of smooth blasting is often used; as a main technical means in smooth blasting, the drill and blast method is properly arranged with blastholes at certain intervals around the excavation limit. In the case of a lateral air surface, use the method of controlling the resistance line and the amount of charge to blast to form a smooth and flat contour surface; The instantaneous explosive force blasts the mo...

AI Technical Summary

Problems solved by technology

[0003] In the traditional drilling and blasting construction process, powdered gunpowder coils are often used as explosives. Although it is relatively simple to use and does not require special equipment for the installation of gunpowder, its explosive capacity is limited during use and cannot be used. To meet the blasting requirements very well, we can only increase the amount of charge, but increasing the amount of charge also increases the risk factor, and in the construction process of the drill and blast method, it is necessary to use uncoupled charges, that is, the explosive rolls are required to be evenly distributed, and the charge Only when there is a certain distance between the rolls can the effect of smooth blasting be exerted, while the traditional charge rod cannot control the distance between the rolls well; Some explosives with better directionality, better blasting direction and higher safety can replace the traditional powdered gunpowder rolls, and with the increase of the difficulty coefficient of tunnel excavation, the thickness of rock strata and the diameter of the tunnel, drilling and blasting methods need to be drilled Deeper blastholes are set, and due to the different rock formations, the angle between the blastholes and the rock formations also changes accordingly;

[0004] Therefore, in the process of drilling and blasting, the traditional charge rod can no longer meet the requirements of the depth of the modern blast hole and the type of explosives. Therefore, a new type of charge rod is needed to meet the requirements of the depth of the modern blast hole and the type of explosives.

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