Project Overview: The section line goes out of Liuxiandong Station, goes along Tongfa Road, passes through the stadium of Shenzhen Vocational and Technical College and then turns into Shahe West Road, passes through Xili Reservoir-Tiegang Reservoir Diversion Tunnel and passes through the Xili Reservoir Drinking Water Resource Protection Zone along Shahe West Road, and then enters Baimang Station. The section can be divided into two main types of strata, one type is mainly hard plastic clay and fully weathered granite, which is suitable for soil-pressure balance mode of tunneling; the other type is mainly slightly weathered/medium weathered granite, which is suitable for open mode of tunneling.
区间线路出留仙洞站后，沿同发路前行，下穿深圳市职业技术学院运动场后转入沙河西路，沿沙河西路下穿西丽水库-铁岗水库引水隧道，并旁穿西丽水库饮用水水源保护区，然后进入白芒站。该区间可以分为两大类地层，一类以硬塑性粘性土、全风化花岗岩为主，适宜采用土压平衡模式掘进;另一类以微风化/中风化花岗岩为主，适宜采用敞开模式掘进。
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