| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of reducing a tunnel micro-pressure wave and, reducing a branch mine passing wave which is generated at a branch mine. SOLUTION: A switch member 3, which opens and closes an opening part of the branch mine 2, is prepared at the opening part of the mine 2, and when a pressure wave X generated by a thrust of the train 1 into the tunnel reached the opening part of the mine 2, pressure gradient of the pressure wave is decreased by opening the switch member. Also, when the train reached the opening part of the mine 2, the switch member is closed to repress generation of the branch mine passing wave and, the tunnel micro-pressure wave radiated form an exit of the main tunnel is reduced.
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