北宜高雪山隧道~穿山遁地全速19@Bluejohn旅行趣|PChome Online 人新台
2001-06-24 22:44:01| 人5,650| 回0 | 上一篇 | 下一篇
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北宜高雪山隧道~穿山遁地全速19

雪山隧道(6)

介完隧道的面部份,今天起就剖隧道,由於雪山隧道TBM及炸法施工方式,因此隧道的面稍有不同,不隧道的大小然是一致的。首先看炸法的部份,隧道最外看是隧道的支,因岩的不同而有不同的形式(如岩、凝土、支保等),再往就是防水膜(照片下息),是隧道的衣可引山壁出的水至排水而避免外至路面上,而最一就是大家常的隧道面貌了(正式名砌)。其炸法TBM施工的差在於前者挖面蹄形,後者形面。(片源:工局站)

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