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Abstract: copper nine new railway Z4 tenders liujiawan tunnel construction for a segment of the micro-expansive red clay, the tunnel roof thickness of 2-10 m of soil, using full-face construction, the focus on earth and stone excavation, slope Support, the main construction, and other key technologies, to learn from similar projects that could be of great significance.
Kwords:Full-section method、Two-lane tunnel、Construction Technology、Lining vehicle form
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