Title:
トンネル切羽前方探査方法
Document Type and Number:
Japanese Patent JP6748918
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a tunnel pit face front investigation method that enables a timing for executing an investigation to be set in a wider range.SOLUTION: There is provided a pit face front investigation method by reflective wave earthquake investigation during a tunnel construction with NATM construction method. The pit face front investigation method includes a strike investigation step B in which, after installing a vibration receiving sensor 28 in at least one of a sensor installation hole 14 or a supporting formed in a tunnel pit wall at a predetermined distance rearward from the pit face, the pit face 12 is struck with a construction machine 16 disposed in vicinity of the pit face 12 and a vibration that propagates in rock mass due to the striking is measured with a vibration receiving sensor 28.SELECTED DRAWING: Figure 1
Inventors:
Takuro Nishi
Wakabayashi Shigeki
Yasuhisa Aono
Atsushi Nakatani
Wakabayashi Shigeki
Yasuhisa Aono
Atsushi Nakatani
Application Number:
JP2016247683A
Publication Date:
September 02, 2020
Filing Date:
December 21, 2016
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
E21D9/00; G01V1/00
Domestic Patent References:
| JP2013087590A | ||||
| JP2014181948A | ||||
| JP2001099945A | ||||
| JP2015140640A | ||||
| JP3132374U |
Foreign References:
| US20150233242 |
Attorney, Agent or Firm:
Sakai International Patent Office