本文转自:人民日报客户端
竹园二号隧道位于惠州市惠东县稔山镇境内,全长394.5米,于2023年9月6日开始施工。该隧道为单洞双线隧道,洞身最大埋深约58米,全隧均为Ⅴ级围岩,采用三台阶开挖法施工。
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