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APPARATUS FOR EXTENSION WORK OF TUNNEL AND METHOD FOR EXPANSION WORK OF TUNNEL USING THE SAME
APPARATUS FOR EXTENSION WORK OF TUNNEL AND METHOD FOR EXPANSION WORK OF TUNNEL USING THE SAME
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机译：隧道扩展工程的装置及使用该装置的隧道扩展工程的方法
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摘要
The present invention is installed in the space between the inside of the tunnel and the outside of the train, is formed in a shape that is bent along the shape of the tunnel, and protects the train from falling objects generated during the tunnel expansion construction, and the upper part of the main frame It is installed in, and a catenary support part for fixing the post of the catenary line so that the catenary line supplying power to the train is located inside the main frame part, and it is installed on the outside of the main frame part and flows into the inner direction of the main frame part during tunnel expansion construction. It characterized in that it comprises an auxiliary frame to protect the train by blocking debris.
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