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小洋山公路隧道为小间距群洞隧道,主洞跨度之大在国内较为罕见。本文主要介绍其设计构思以及洞身和洞口预支护措施等。
The small Yangshan highway tunnel is a small spacing group tunnel, the main span of large span is relatively rare in China. This article mainly introduces its design concept as well as the hole body and hole support measures.