Non-blasting hydraulic thunderbolt tunnel excavation method

Abstract

The invention discloses a non-blasting hydraulic thunderbolt tunnel excavation method. An internal excavation region and an external thunderbolt excavation region are divided on a tunnel face, a firstcircle of thunderbolt holes, a second circle of thunderbolt holes to an Nth circle of thunderbolt holes are sequentially formed at intervals from inside to outside in the external thunderbolt excavation region, and drilling operation on all the thunderbolt holes in the external thunderbolt excavation region is completed from inside to outside sequentially; a cavity is excavated in the internal excavation region of the tunnel face, and rock debris dropped out is eliminated; and a hydraulic thunderbolt stick connected by virtue of a hydraulic pipe of a hydraulic thunderbolt machine sequentiallyspalls rock masses of the first circle of thunderbolt holes to the Nth circle of thunderbolt holes from inside to outside. The method disclosed by the invention has the beneficial effects that the technical problem that blasting operation excavation is not allowed in a special geological section is well solved, construction cannot be limited, the adopted equipment is simple, operation is flexible, no vibration, no impact and no noise is produced during operation, split is rapid, operation efficiency is high, safety and energy conservation are realized, the cost is low, and the excavation speed is high.

Description

technical field [0001] The invention relates to a tunnel excavation method, in particular to a non-explosive hydraulic thunderbolt excavation method for a tunnel. Background technique [0002] At present, with the rapid development of railways, highways, underground projects, etc., at the same time, in the construction of underground projects or tunnels, there are more and more special situations such as existing railway lines or highway lines, structures, and residential buildings that are adjacent to the operation. There are also more and more conditions that do not possess explosive blasting. If the tunnel is completely excavated without blasting, the shield tunneling method is widely used at present. The large-scale shield tunneling machine can cost tens of millions or even hundreds of millions, and the investment cost is relatively high, especially in some mountainous areas where shield tunneling machines are not yet available. Conditions; if an excavator is used to ex...

AI Technical Summary

Problems solved by technology

The invention solves the technical problem that blasting excavation is not allowed in special geological sections, close to existing lines, passing through important structures, close to residences, commercial and other public areas, and adopts simple equipment and flexible operation. No vibration, no impact, no noise during work, fast splitting, high operating efficiency, safety, energy saving, low cost, and fast excavation speed

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