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- Title
高速铁路超大直径水下盾构隧道防灾疏散救援研究.
- Authors
冯天炜
- Abstract
In order to determine the design principles and design parameters of disaster prevention and evacuation rescue in tunnel, the principles of disaster prevention and evacuation are clarified through analyzing the parking position of trains under fire conditions based on the Chongming-Taicang Yangtze River Tunnel. Combining with the civil engineering, three schemes of disaster prevention and evacuation are proposed for this project: the first scheme-shaft No. 2 as an emergency exit, the second scheme-shafts No. 2 and No. 3 as the emergency exits, and the third scheme -shafts No. 1 to No. 3 as the emergency exits. The schemes are evaluated by the evacuation time that is used as the comparison index, and such technical parameters are determined as the optimal distance between the evacuation openings, the reasonable evacuation plan, the layout parameters of shelter and rescue plan. The research results show that the disaster prevention and evacuation in tunnel are only for the train failure condition, when the affected train would not stop in the tunnel with residual power. With the increase of the evacuation opening distance, the safe evacuation time and the congestion time would become longer, and the reasonable distance is 75 m, which could avoid congestion during the evacuation process. The increase in the number of emergency exits could effectively reduce the evacuation control time, the recommended scheme of evacuation would be determined through the investment effect analysis in combination with the civil engineering. In order to ensure the safety during the evacuation process, the shelter using the space under the track is set up for evacuees. The length of shelter is 330 m, the net width is 4. 0 m, and the net height is 2. 5 m. The fixed-point rescue method is adopted in the tunnel and the evacuees would stay in the nearest shelter waiting for track surface rescue.
- Publication
Railway Standard Design, 2024, Vol 68, Issue 4, p138
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202208300005