Title:
切羽前方探査方法
Document Type and Number:
Japanese Patent JP7005272
Kind Code:
B2
Abstract:
To easily install a receiver in a tunnel hole without major preparation work and to accurately estimate a direction in which a three-dimensional distribution state or a reflection surface position of a face front reflection surface.SOLUTION: A vibration reception unit having vibration sensors in the x direction, the y direction and the z direction is in pressure contact with a pit wall surface via a lock bolt. The reception unit captures seismic waves propagating through the pit wall. The waveform data of each of the acquired seismic waves are processed to extract a measurement waveform of a specific low frequency range. A waveform of a reflected wave having characteristics similar to those of the initial waveform is extracted from respective measurement waveforms. The reflection surface position is measured based on the waveform data of the reflection waves.SELECTED DRAWING: Figure 2
Inventors:
Masashi Nakatani
Kazuhiro Onuma
Hiroyuki Yamamoto
Kazuhiro Onuma
Hiroyuki Yamamoto
Application Number:
JP2017203426A
Publication Date:
January 21, 2022
Filing Date:
October 20, 2017
Export Citation:
Assignee:
Ando Co., Ltd.
International Classes:
G01V1/20; G01V1/28
Domestic Patent References:
| JP2014181948A | ||||
| JP2017166881A | ||||
| JP2015158437A | ||||
| JP10311880A | ||||
| JP2013174580A | ||||
| JP2017156106A | ||||
| JP11142528A | ||||
| JP2014013222A | ||||
| JP2013142556A | ||||
| JP2015090032A | ||||
| JP2014106075A | ||||
| JP2001099945A |
Foreign References:
| US6307808 |
Attorney, Agent or Firm:
Felicite Patent Business Corporation
Sakai Hajime
Masahiro Kurai
Sakai Hajime
Masahiro Kurai
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