新岩膨胀土滑坡特征及成因分析  

Characteristics and Mechanism Analysis on Xinyan Expansive Soil Landslide

作　　者：许德智[1] 陈剑平[1] 李严严[1] 牛宏志 

机构地区：[1]吉林大学建设工程学院 [2]吉林省交通勘察设计有限公司

出　　处：《金属矿山》2012年第10期25-28,32,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:40872170);吉林省交通厅项目(编号:2011-1-16)

摘　　要：新岩滑坡主要是新填方路段产生的滑坡,是位于大型古滑坡体上新近发育的局部浅层滑动。对滑坡土体进行矿物成分试验和膨胀性试验,结果表明滑坡土体具有典型的膨胀特性。从滑坡形态特征、滑坡土体特征及滑坡变形特征几方面分析了该膨胀土滑坡的特殊性,并从膨胀性岩土、人工填方、侧向变形空间及水的作用4个方面分析了该滑坡的成因,为该滑坡的支护结构设计提供了科学的依据,同时对深入研究和整治该地区其他膨胀土滑坡有深远意义。Xinyan landslide caused by the new filling embankment, is a kind of partly superficial slide that is recently developed from a large ancient slide. The landslide soil has typical expansive property through mineral composition test and dilatability test on the landslide. This article analyzes the specific characteristics of the expansive soil from the slide shape, slide soil property and landslide deformation, and the genetic type of landslide is analyzed from four aspects of expansive soil, artificial filling, space of lateral deformation and water effect. This provided scientific proof for the supporting structure design of the landslide and played an extremely significant role in deeply studying and treating other expansive soil landslides in this region.

关 键 词：滑坡 膨胀土 填方路堤 成因分析 

分 类 号：TU473.2[建筑科学—结构工程]