本地纯净下载
纯净官方版WWW,2061924,COM-2061931,COM
据悉,狮子山隧道全长1315米,最大埋深108.5米,洞身横穿狮子山,为时速200千米/小时的单洞双线隧道。隧道共存在8段围岩破碎区,其中出口局部地形较差,地表植被茂密,危石不易见,进口北侧及正洞处上方处存在居民房屋,为1层至3层钢筋混凝土框架结构,该段埋深20米,距离洞口的直线距离143米,安全风险多而复杂,施工难度较高。
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