Blasting construction method for forming certain angle between drill hole and joint

Abstract

The invention relates to a blasting construction method for forming a certain angle between a drill hole and a joint, and belongs to the technical field of blasting construction. The blasting construction method comprises the following steps that S1, the trend and tendency of a mountain rock stratum are measured; S2, holes are formed along the mountain rock stratum trend and inclination; an included angle is formed between the axis of the drill hole and the tendency of the mountain rock stratum; S3, charging is conducted; 1) filling explosives into a charging assembly; and 2) installing the explosives in the drill through an explosive loading assembly; S4, the drill hole is blocked; and S5, detonating is conducted. Due to the fact that the included angle is formed between the diameter of the drill hole and the tendency of the mountain rock stratum, the number of joints passed by the drill hole with the same depth is smaller than the number of the joints passed by the drill hole perpendicular to the rock stratum, and the diameter of a rock crushing block is small; and the explosive loading assembly is arranged, so that the extrusion of some disintegrating slag in the drill hole to the explosives when the explosives are placed in the drill hole can be reduced, the blasting effect is improved, the subsequent secondary crushing of large-diameter rocks is reduced, and the construction time is shortened.

Description

technical field [0001] The application relates to the field of blasting construction, in particular to a blasting construction method in which drilling and joints form a certain angle. Background technique [0002] At present, when building roads, if the mountain is blocked, blasting is required to blast the mountain, or in other underground excavation projects, blasting is also required, and the blasting construction methods generally include exposed blasting, blasting blasting and deep hole blasting law etc. [0003] Because deep hole blasting has the advantages of small unit drilling volume, low unit consumption of explosives, high production efficiency, and the convenience of comprehensive mechanized construction for blasting, excavation, and transportation operations, so in related technologies, open-air and underground excavation projects Generally, deep hole blasting is used in the construction, and the hole is directly drilled, and then explosives are placed in the ...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that for road construction, after deep hole blasting is carried out on the mountain, there are often large pieces of gravel, which is not convenient for filling the roadbed, so it is necessary for the staff to perform secondary crushing of the large pieces of gravel , thereby prolonging the construction time

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