Foundation should be surrounded by drainage measures, there is no water phenomenon.
基础四周应有排水措施，不得有积水现象。
2
Research results: Through systematically analyzing and comparing, the general measures of culvert foundation improvement are drainage and consolidation method and complex foundation method.
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。
3
Through the experimental section research, will build the solid foundation and the technical reserve for the later road engineer synthesis drainage system design.