Continuous blasting drilling method

Abstract

The invention provides a continuous blasting drilling method. The method comprises the following steps: S1: through a continuous blasting device, mud is simultaneously injected to the front end and the rear end of a priming segment along the rock drilling direction, and a front mud column and a rear mud column are formed respectively; S2: through the continuous blasting device, sand is simultaneously injected to the front end of the front mud column along the rock drilling direction and the rear end of the rear mud column along the rock drilling direction, and a front sand segment and a rear sand segment are formed respectively; S3: through the continuous blasting device, blasting explosive is injected between the front mud column and the rear mud column; and S4: the continuous blasting device ignites the blasting explosive to implement blasting. The blasting is conducted by filling liquid explosive, so the blasting direction of the explosive can be controlled, the blasting effect is good, and the blasting and rock drilling can be conducted simultaneously, so continuous filling of the explosive can be conducted without taking out a drilling head and the drilling efficiency is high.

Description

technical field [0001] The invention relates to a rock drilling method, in particular to a continuous 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 ...

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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