三峡库区重庆市奉节县花乐村滑坡成因机制及稳定性分析  

GENETIC MECHANISM AND STABILITY OF THE HUALUOCUN LANDSLIDE IN FENGJIE COUNTY, CHONGQING CITY

作　　者：徐志文[1] 罗永忠[2] 潘向东 

机构地区：[1]四川省国土资源厅地质环境管理处,四川成都61005 [2]四川省华地建设工程有限责任公司101分公司,四川广汉618300 [3]赤峰市建筑勘察设计研究院,内蒙赤峰市024000

出　　处：《四川地质学报》2002年第2期111-115,共5页Acta Geologica Sichuan

摘　　要：奉节县平皋乡花乐村滑坡位于平皋乡高店村 ,是在老滑坡体上多次复活的具有两级滑面的大型基岩滑坡。老滑坡体具有多组剪切裂隙和风化裂隙 ,前缘受河水冲刷形成有效临空面。浅层滑体为块石土松散堆积物 ,滑移面为块石土与碎裂岩体的接触界面 ,目前处于正在贯通阶段。根据岩土样品的试验值、现场大剪值 ,结合地区经验值及反算值 ,对老滑坡及新滑坡体进行稳定性计算 ,结果表明老滑坡在各种条件下是稳定的 ,新滑体在饱水及水库蓄水后 ,处于临界蠕滑或失稳状态 。The Hualecun Landslide in Gaodian Village, Pinggao Township, Fengjie County is a large-scale landslide lying on an old landslide body and with two-level sliding faces. There are multiple sets of shear fissures and weathering fissures in the old landslide body with an effective freeing surface formed from the washed front. Shallow sliding body is composed of loose accumulation and the sliding surface is between rock fragments and a fractured rockbody.Calculation based on test , empirical and anti-inferencei data indicates that the old landslide body is always stable in any condition, while the new landslide body saturated with water is in critical creeping motion. Therefore, this landslide has need to be controlled as soon as possible.

关 键 词：三峡库区 重庆市 奉节县 滑坡 成因机制 稳定性 孔隙水压力 有效临空面 临界蠕滑 

分 类 号：P642.22[天文地球—工程地质学]