Rapid blasting drilling method

Abstract

The invention provides a rapid blasting drilling method. The rapid blasting drilling method comprises the following steps that S1, simultaneously injecting mud to the front end and the rear end of a detonation section along a rock drilling direction is carried out through a rapid blasting device to respectively form a front mud column and a rear mud column; S2, blasting powder is injected betweenthe front mud column and the rear mud column through the rapid blasting device; S3, sand is injected into the front end, in the rock drilling direction, of the front mud column and the rear end, in the rock drilling direction, of the rear mud column at the same time through the rapid blasting device, a front sand section and a rear sand section are formed respectively; and S4, the blasting powderis ignited through the rapid blasting device, and blasting is implemented. According to the rapid blasting drilling method, liquid explosive can be filled so that blasting can be carried out, so thatthe blasting effect is good, blasting and rock drilling are carried out at the same time; and explosive filling can be continued without taking out a drill bit, so that the drilling efficiency is high.

Description

technical field [0001] The invention relates to a drilling method, in particular to a rapid blasting drilling method. Background technique [0002] At present, in the construction of tunnels such as railways, highways, subways, and mountain drilling, two excavation methods, manual blasting excavation and automatic rotary knife cutting, are often used for construction. The artificial blasting type requires drilling the excavated rock and then filling it with solid explosives for blasting, and then cleaning the slag before proceeding to the next round of construction; while the automatic rotary drilling uses a slicing arch knife, which is physically cut by the rotation of the blade. The above two methods are all inefficient in construction. Although the former is blasting, it can only be excavated manually; although the latter is automated, it uses physical cutting, and its effect cannot be compared with blasting. Contents of the invention [0003] The technical problem to...

AI Technical Summary

Problems solved by technology

The above two methods are inefficient in construction

Although the former is blasting, it can only be excavated manually; although the latter is automated, it uses physical cutting, and its effect cannot be compared with blasting.

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