Title:
トンネル緩衝工用防音装置
Document Type and Number:
Japanese Patent JP6675894
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide sound insulation equipment for tunnel buffering work that can reduce a travel sound of a train radiated from an opening part of tunnel buffering work without spoiling reduction effect on a tunnel fine atmospheric pressure wave.SOLUTION: Providing tunnel buffering work 1 with a sound insulation equipment 100 having a plate-like member 20, made at least partially of a porous material, arranged to shield a part of an opening part 2, the plate-like member 20 absorbs vibrations of air passing through the opening part 2 and then noise such as a travel sound of a train radiated from the opening part 2 can be reduced. Although the sound insulation equipment 100 is provided at the opening part 2 of the tunnel buffering work 1, the opening part 2 is not completely closed and ventilation characteristics are secured, so that reduction effects on a tunnel fine atmospheric pressure wave are not spoiled. Namely, this sound insulation equipment 100 can reduce the noise such as the travel sound of the train radiated from the opening part 2 of the tunnel buffering work 1 without spoiling the reduction effects on the tunnel fine atmospheric wave.SELECTED DRAWING: Figure 1
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Inventors:
Nobuyuki Kimura
Matsunuma Masaaki
Matsunuma Masaaki
Application Number:
JP2016054710A
Publication Date:
April 08, 2020
Filing Date:
March 18, 2016
Export Citation:
Assignee:
East Japan Railway Company
International Classes:
E21D9/14; E01F8/00
Domestic Patent References:
| JP2012225010A | ||||
| JP53069414A | ||||
| JP2009235757A | ||||
| JP51141103A | ||||
| JP52015124A |
Foreign References:
| WO2009057852A1 |
Attorney, Agent or Firm:
Gwangyang International Patent Office