Title:
負圧波発生装置
Document Type and Number:
Japanese Patent JP6847677
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To exactly calculate a timing of a micro barometric wave radiated from a tunnel exit.SOLUTION: A negative pressure wave generator 1 reduces the pressure of a micro barometric wave Wradiated from a mine mouth 21 of a tunnel 2 by means of a negative pressure wave W, and includes a negative pressure wave generation means 11 capable of radiating the negative pressure wave W, compression wave passing detection means 12 which detects passing of a compression wave Wthat generates in the tunnel 2 and transmits from one side to the other side, compression wave condition detection means 12 which detects the condition of the compression wave Wat the detection by the compression wave passing detection means 12, and control means 13 which controls operations of the negative pressure wave generation mean 11 on the basis of a detection results detected by the compression wave passing detection means 12 and the compression wave condition detection means 12.SELECTED DRAWING: Figure 1
Inventors:
Yoshiko Takei
Toshifumi Kudo
Kenta Yamamoto
Nobuyuki Kimura
Takashi Goto
Tatsuya Yamamoto
Toshifumi Kudo
Kenta Yamamoto
Nobuyuki Kimura
Takashi Goto
Tatsuya Yamamoto
Application Number:
JP2017007015A
Publication Date:
March 24, 2021
Filing Date:
January 18, 2017
Export Citation:
Assignee:
Mitsubishi Heavy Industries Machinery Systems Co., Ltd.
East Japan Railway Company
East Japan Railway Company
International Classes:
E01F8/00; E21F17/00
Domestic Patent References:
| JP4182502A | ||||
| JP9228786A | ||||
| JP5209405A | ||||
| JP2014105482A |
Foreign References:
| WO2009057852A1 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata