Tunnel excavation method

Details Tunnel excavation method Tunnel excavation method

1985-10-18

1987-06-16

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Processes

Forming blocks

299 19, 405138, E21C 4100

Patent

active

046732187

ABSTRACT:
A method of excavating a tunnel in bedrock, including the steps of boring an outer peripheral slot in the bedrock, boring a plurality of horizontal slots in a bedrock section surrounded by the outer peripheral slot such that the bedrock section is divided into a plurality of bedrock portions by the horizontal slots, boring a plurality of vertical slots in one of the bedrock portions such that the one of the bedrock portions is divided into a plurality of bedrock blocks by the vertical slots, removing the bedrock blocks from the bedrock so as to define a working space, and providing an excavator in the working space such that the remaining ones of the bedrock portions are sequentially excavated by the excavator.

REFERENCES:
patent: 1093787 (1914-04-01), Kuhn et al.
patent: 3325217 (1967-06-01), Enz
patent: 3597929 (1971-08-01), Bodine
patent: 4437795 (1984-03-01), White

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