这次会议的召开是适时的,十分重要的。特对会议表示祝贺。这次会议主要是讨论和总结“不产砂石地区修筑晴雨通车路面”的经验,以及“路基路面综合调查研究”和“桥涵水文综合研究”的成果,这是当前生产迫切需要解决的问题,这些项目十分重要,任务也是很艰巨的。路基路面,水文方面把有关的题目综合起来研究,这样的研究方 The convening of this meeting is timely and very important. Special congratulation on the meeting. The meeting mainly discussed and summarized the experience of “building a rain-free and accessible road surface in non-gravel-producing areas” and the achievements in “comprehensive investigation of subgrade and pavement” and “integrated research on bridge and culvert hydrology”, which are problems urgently to be solved in current production. These projects are very important and the task is very arduous. Subgrade pavement, hydrology, the relevant topics to study together, such a research party