我县(福建省永泰县)地处山区,很多民房因地制宜依山而建,为了防止土体坍塌危及建筑物的安全,很多地方都采用重力式挡土墙。因为重力式挡土墙结构简单、施工方便,用块石砌筑,又可以就地取材,所以应用甚为普遍。前年全国发生大范围洪灾时,我县也出现两起较严重的因为重力式挡土墙倒塌导致民房坍塌的事故,经过调查分析,其原因有以下几点。 My county (Yongtai County, Fujian Province) is located in the mountainous area. Many houses are built in accordance with local conditions. In order to prevent the collapse of soil and endanger the safety of buildings, gravity retaining walls are used in many places. Because the gravity retaining wall has a simple structure and is easy to construct, it can be built on block stone and can be used on the spot. Therefore, it is widely used. When a large-scale flood occurred nationwide in the previous year, there were two more serious accidents in the county due to the collapse of the gravity retaining wall causing the collapse of the houses. After investigation and analysis, the reasons for this were as follows.