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EVALUATION OF INSTABILITY OF SLOPES UNDER HEAVY RAINFALL BASED ON REALTIME MONITORING OF DEFORMATION AND WATER CONTENTS

机译:基于变形和含水量实时监测的暴雨条件下边坡失稳性评价

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摘要

Sensing and monitoring are cost-effective countermeasures against slope failure disasters.Criteria of issuing warning based on the monitored data are essential for this purpose.Two methods are widely employed at present.The one is monitoring the rainfall intensity,and warning is issued when the amount of rainfall exceeds a prescribed critical value.The other one is monitoring the displacement on the surface of slopes,and warning is issued when the displacement rate exceeds a critical value.However,the criteria of both methods are defined empirically,and neither of them is based on physical characteristics of slope materials and structures.In this paper,results from model tests,element tests,and a field test are reported,and an attempt to establish new criteria of issuing warning for slope failures is presented.Relations between the deformation and the volumetric water content of unsaturated soils are observed in the tests.And,some examples of idea to use combined sets of data on the displacement and the volumetric water content of slopes.
机译:传感和监测是对付边坡破坏灾害的经济有效的对策。为此目的,基于监测数据发出警报的标准是必不可少的。目前广泛采用两种方法。一种是监测降雨强度,当降雨强度发生时发出警报。降雨量超过规定的临界值。另一种方法是监视斜坡表面的位移,当位移率超过临界值时会发出警告。但是,这两种方法的标准都是凭经验定义的,两种方法均未定义本文基于边坡材料和结构的物理特性。本文报道了模型试验,单元试验和现场试验的结果,并尝试建立新的边坡破坏预警指标。变形之间的关系在测试中观察到了非饱和土壤的体积水分含量。坡度和体积水含量。

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