Detonating network architecture for safe blasting of subsurface tunnel and control method

Abstract

The invention relates to a blasting network architecture for safe blasting of a subsurface tunnel and a control method, and the blasting network architecture is characterized by comprising the following steps: obtaining blast hole parameters which at least comprise blast hole positions and blast hole quantity; wherein the number of the peripheral holes is at least increased on the basis of the number of the existing blast holes, the peripheral holes serve as vibration isolation holes, and a row of vibration reduction holes are additionally formed between the peripheral holes and the auxiliary holes. The slotting hole is formed in the lower middle portion of the excavation section, the peripheral holes are distributed in the excavation section along the tunnel outline, the vibration reduction holes are formed between the peripheral holes and the auxiliary holes, the auxiliary holes are formed in the excavation section between the peripheral holes and the slotting hole, and the bottom plate holes are formed in the bottom of the excavation section.

Description

technical field [0001] The invention relates to the field of tunnel blasting construction, in particular to an initiation network structure and a control method for safe blasting of underground tunnels. Background technique [0002] With its advantages of high efficiency, quickness, and environmental protection, subway transportation has become an effective means to relieve urban traffic pressure and reduce pollution. However, due to the existence of existing buildings in the city, a large number of underground tunnels need to be built. In order to speed up the construction process and efficiency, it is inevitable to adopt blasting construction in rock formations, but blasting usually has a certain impact on existing buildings. Taking reasonable and effective vibration reduction measures is the key to smooth construction. [0003] In the prior art, for example, the patent document with the publication number CN201611211317.5 proposes a tunnel cavity mud vibration-reduction ...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technical scheme proposes a construction method of micro-differential networking outside the hole using blasting. By improving the single-shot blasting construction method to a single-shot differential blasting method, the blasting scale of instantaneous blasting is reduced, and the superposition of blasting vibration is greatly reduced. , effectively reducing the intensity and impact of vibration. However, due to the small detonation interval and large detonation scale of the single differential detonation method, part of the vibration generated during blasting will still be superimposed, and the effect of vibration reduction is not ideal.

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