研究结果：通过系统的分析比较，涵洞地基加固处理常用两类方法：一是排水固结法，二是复合地基法。
Research results: Through systematically analyzing and comparing, the general measures of culvert foundation improvement are drainage and consolidation method and complex foundation method.
以聚乙烯塑料防水板为主要防水结构的复合式防排水系统是隧道防排水设计与施工的发展趋势。
It is a developing tendency to use polyethene plastic waterproof membrane as main structure in tunnel waterproof and water drainage.
以聚乙烯塑料防水板为主要防水结构的复合式防排水系统是隧道防排水设计与施工的发展趋势。
It is a developing tendency to use polyethene plastic waterproof membrane as main structure in tunnel waterproof and water drainage.
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