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当前位置: 首页 > 文章 > 台风暴雨条件下滑坡水文响应过程及稳定性分析 安徽农业科学 2015,19 (19) 176-180+294
Position: Home > Articles > Study on the Process of Hydrological Response and Stability Analysis of Landslide Body in Typhoon Rainstorm Journal of Anhui Agricultural Sciences 2015,19 (19) 176-180+294

台风暴雨条件下滑坡水文响应过程及稳定性分析

作  者：
池永翔
单  位：
福建省地质调查研究院
关键词：
台风暴雨;滑坡;水文响应;稳定性
摘  要：
以试验数据为依据,通过数值模拟重演滑坡体对台风暴雨单峰型降雨的典型水文响应过程,得出了水文响应及稳定性的变化规律。结果表明,在降雨峰值期坡体表层快速形成饱水区,造成前缘局部孔隙水压力增大,坡脚位置地下水位抬升。边坡稳定性系数迅速下降,处于失稳状态;之后坡体的稳定性逐渐提高,仍处于不稳定状态。
译  名：
Study on the Process of Hydrological Response and Stability Analysis of Landslide Body in Typhoon Rainstorm
作  者：
CHI Yong-xiang;Fujian Institute of Geological Survey;
关键词：
Typhoon rainstorm;;Landslide;;Hydrological response;;Stability
摘  要：
According to the scientific data from experiment,the rainfall infiltration model of typical shallow soil landslide under typhoon rainstorm condition is established using GEO-SLOPE software,and combine the analysis of the seepage field,stress field,deformation-strain field,the research on the process of landslide hydrological response,deformation displacement and the change of stability,reveal the breakage mechanism of landslide: the main reason for slope failure is the difference of permeability between stratum and the peak rainfall. Plentiful rainwater seep into the slope body caused by peak rainfall,which make micro-confined groundwater in the residual layer of the slope body infiltrate to spillway in the slope toe. When the ability of excretion is less than the infiltration supplies quantity of the lateral and vertical,which cause groundwater store up massively in the leading edge of landslide,the matric suction and strength of residual layer reduce gradually. When effective intensity is insufficient to maintain the stability,the slope destruction will occur.

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