首先不知道为什么回填土要高出地面2米？通常来说比室外高600mm就可以满足防水，是当地无法排水？高出2米必须做挡土墙。看描述应该是室内场平，不过因为靠近道路，刚好位于两条道路中间，道路是坡路，所以室内为了平，到最后会高于路面2米，那么这个高出部分必须做挡土墙。

因为无法知道你说的那个墙的位置，不过看什么50墙，是那种围墙？？首先50墙肯定是非承重墙，其次围墙不能做挡土墙。

支持一下。

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50厚的墙没什么用，200厚差不多。还有就是你的标题有错别字，希望可以修改一下。

高出两米？你是在自己家做了四面挡土墙？