福建省南平红桃山滑坡变形活动特征及防治措施

Deformation Characteristics and Control Measures of the Hongtaoshan Landslide in Nanping City,Fujian Province

红桃山滑坡位于南平市延平区闽江岸边,2009年7月～2010年6月,经历了4次罕见的特大暴雨,过程降雨量为200～400mm,强降雨诱发了红桃山斜坡4次变形活动,最终形成中型滑坡。由于预报准确及时,避免了重大人员伤亡发生。滑坡处于闽江上游侵蚀岸边,特殊的地形(地貌)、岩土体特征及丰富的地下水活动是滑坡产生的内因,人类工程活动开挖坡脚、坡顶加载及强降雨作用是诱发滑坡的主要外因。针对滑坡变形活动特征及稳定性分析,采取了排水、削方减载、支护等综合工程治理措施,获得了较好的治理效果。

The Hongtaoshan landslide is located on the Mingjiang shore of Yanping district of Nanping city. 2009.7～2010.6, there are four rare torrential rain and the amount of rainfall is 200～400mm. The strong rainfall induced 4 defomation activities of Hongtaoshan slope, so medium-sized landslide is formed eventually. Due tu forecast accurately and timely, there wasn, t the major casualty incident. The landslide is located on the upper Mingjiang shore. Internal cause of the landslide were rich in groundwater activities, the special terrrain （landform） and characterisitics of rock-soil and the main factors inducing the landslide slope were toe cutting, top loading and intensive rainfall. For disformation activity characteristics and stable analysis of the land slide, drainage, reucing weight and support have to be undertaken as xthe engineering control measures, so get good control effects.