Non-explosive tunnel excavation construction method

Abstract

The invention discloses a non-explosive tunnel excavation construction method, characterized by comprising the following concrete steps of: firstly, drilling splitting holes in the horizontal direction according to the designed separation distance on the periphery of an excavation area; erecting an operating rack in a tunnel, drilling for coring in the horizontal direction in a cyclotomic mode along the periphery of the excavation area by using a water mill drill, forming a continuous channel free face on the periphery of the excavation area; and splitting for excavating the rock mass inwards from the periphery of the continuous channel free face, and manually clearing the split rock mass. The construction method is safe and economical and has relatively high work efficiency, thus being applicable to underground engineering in construction sites with low surface under-passing shock resistant grade, or sites and parts where concussion of blasting is not allowed.

Description

technical field [0001] The invention relates to a non-explosive excavation construction method in underground engineering, which is suitable for non-explosive excavation construction in rock underground engineering. Background technique [0002] With the acceleration of my country's railway, highway and urban infrastructure construction, most of the tunnels are shallowly buried and pass through urban and rural structures and buildings, and the drilling and blasting method is still used in the construction of tunnels in these areas. In order to ensure the safety of surface residents, structures and buildings, blasting vibration control technology must be used in drilling and blasting construction. However, even the most advanced blasting vibration control technology can only minimize the blasting vibration, and the vibration velocity control of blasting vibration is relatively volatile, which is easy to affect residents. When excavating shallow-buried tunnels in an urban env...

AI Technical Summary

Problems solved by technology

The first six methods of these methods, either require the air surface and have low work efficiency, or the investment in equipment is too large, which is uneconomical for short-distance difficult areas

The coring method is generally only used in open-air vertical excavation, such as pile foundation and foundation pit construction; it has not been applied to the tunnel excavation.

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