
汕头海湾隧道西线盾构掘进施工突破2000米节点,东线盾构掘进施工即将攻克施工难度最大的基岩凸起段,其中,东线海域段有望在今年4月份率先贯通。
汕头海湾隧道海底部分长约3公里,经过17个月的施工,2019年9月,隧道东线盾构掘进施工率先到达2000米;西线虽比东线晚6个月始发掘进,但仅用14个月就到达2000米的位置。
基岩凸起段是海湾隧道地质条件最复杂、难度最大的施工段,经过攻坚奋战,目前,东线盾构即将通过基岩凸起段,并且为西线施工提供经验借鉴和数据支撑。
还是整个盾构区间最难的施工节点就是海下三段基岩凸起的掘进施工,东线隧道预计在2020年4月贯通,西线是在8月份左右能够贯通。
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