摘要
岩土体的蠕变特性是影响滑坡变形和稳定状态的重要因素。进行滑坡稳定性分析,依据位移监测资料进行预警预报,都有必要考虑滑坡的蠕变特性。以重庆云阳凉水井滑坡工程为背景,采用考虑蠕变特性的强度折减法,从宏观观测现象分析、监测位移趋势分析和数值模拟分析3个方面,研究滑坡变形破坏机理。研究表明,通过对比监测位移–时间曲线和不同安全系数所对应的计算位移—时间曲线,定量判断滑坡稳定状态,结合定性经验分析,可准确进行预警预报,为工程决策提供重要参考。
Creep property of rock and soil is important for landslide deformation and stable state.And it is necessary to be considered for analyzing stable state and prediction of landslides by displacement monitoring resources.With the landslide project which lies on Yunyang County in Chongqing City of China,the strength reduce technology considering creep properties is employed to study landslide deformation mechanism through analysis on macro phenomenon observation,monitoring displacement trend and numeral computing results.The final research shows that through comparing the monitoring displacement curves with the calculated displacement curves,the quantitative determination of the landslide stable state combined with qualitative experience can make accurate landslide prediction,and it can provide important reference for engineering decision-making.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2010年第S2期5-8,共4页
Chinese Journal of Geotechnical Engineering
关键词
边坡工程
滑坡预报
蠕变
强度折减法
安全系数
slope engineering
landslide prediction
creep
strength reduce technique
safe factor
