IN-SITU MEASUREMENT OF INTERNAL EARTH PRESSURE DURING LANDSLIDE MOVEMENT
IN-SITU MEASUREMENT OF INTERNAL EARTH PRESSURE DURING LANDSLIDE MOVEMENT
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滑坡运动期间地内压力的现场测量
DOI：
10.3208/sandf.38.3_97
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发表时间：
1998
影响因子：
3.7
通讯作者：
Akira Suemine
中科院分区：
文献类型：
--
作者：
K. Araiba;Akira Suemine
每两分钟一次就地观测滑坡运动期间的横向内部土压力。获得的数据与滑坡的其他观测数据一起讨论。三个不同事件中实际滑坡运动的发现总结如下：观测到的土压力随钻孔位置的不同而变化。在有限数量的钻孔中测量了运动开始时的变化。滑面发生一定量的相对位移后，出现较大的变化。在运动停止的那一刻，几乎所有钻孔的土压力都急剧增加。运动过程中积累的土压力各向异性应力在停止时释放，滑动前后压力差较小。在这三个事件期间，在钻孔中发现了几乎恒定的峰值土压力，称为被动土压力。
Lateral internal earth pressure during landslide movement was observed in-situ at two-minute intervals. The data obtained are discussed together with other observational data for the landslide. Findings for actual landslide motion in three distinct events are summarized as follows : variation in the observed earth pressure differed with the borehole position. Variation at the onset of movement was measured in a limited number of boreholes. Large variation appeared after a certain amount of relative displacement occurred at the slip surface. There was a rapid increase in earth pressure in almost all the boreholes at the moment movement stopped. Anisotropic stresses in earth pressure that accumulated during movement were released when it stopped, and the difference in pressure before and after the sliding was small. An almost constant peak earth pressure, designated the passive earth pressure, was found in a borehole during the three events.