赣深高铁广东段首座双线长大隧道——义合隧道昨日全面贯通，为赣深高铁2021年通车打下坚实基础。
义合隧道承建单位中铁十六局集团赣深高铁一标指挥长李明介绍说，该隧道位于广东省河源市东源县崇山峻岭之中，全长6043米，是赣深高铁“咽喉”工程，“整座隧道围岩稳定性极差，由全风化到弱风化花岗岩，地质复杂，洞身穿越8个大断层带，施工难度很大。我们先后采用了自行式液压仰拱栈桥、半自动挂布台车、湿喷机械手等先进设备，和二次衬砌分窗入模技术、水压爆破等先进工艺。抗干扰移动式分层浇筑混凝土模架等5项技术，还获得国家知识产权局颁发的实用新型专利，并在全国同行业内推广应用。”
据了解，赣深高铁是京九高铁南段的联络大通道，是我国“八纵八横”高速铁路网的重要组成部分。
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