Title:
トンネルの施工方法
Document Type and Number:
Japanese Patent JP7503356
Kind Code:
B2
Abstract:
To provide a tunnel construction method that does not increase the number of work procedures, does not reduce construction speed, and reduce cost of equipment in tunnel construction.SOLUTION: In a tunnel construction method, steps are performed, the steps including: a step of blasting and drilling a pit face K; a step of crushing muck Za generated by drilling with a crusher 2 and then loading the muck Za on a belt 4c via a tail piece truck 3; a step of spraying concrete to a tunnel wall surface formed by drilling; installing a rock bolt B from the concrete toward an inside of the natural ground; a step of, in a case where the current pit face progress length is equal to or longer than the intermediate frame length, performing in parallel a step of advancing the crusher and the tail piece truck and installing an additional intermediate frame to extend the belt and a step of spraying concrete to the tunnel wall surface formed by drilling.SELECTED DRAWING: Figure 9
Inventors:
Yuki Takahashi
Application Number:
JP2021023552A
Publication Date:
June 20, 2024
Filing Date:
February 17, 2021
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21D9/12; E21F13/10
Domestic Patent References:
| JP2018178638A | ||||
| JP2008138385A | ||||
| JP2011074678A |
Attorney, Agent or Firm:
Toshiro Ohata