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首页> 外文期刊>E3S Web of Conferences >Stress release and suction generation in the Callovo-Oxfordian claystone
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Stress release and suction generation in the Callovo-Oxfordian claystone

机译：Callovo-Oxfordian Claystone中的应力释放和吸力产生

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摘要

Stress release effects in a specimen of claystone extracted at great depth (465 m) in the layer of the Callovo-Oxfordian claystone in Eastern France is examined by mimicking the stress change during extraction in the oedometer. To do so, a specimen first submitted to hydration with swelling impeded is afterwards unloaded at constant water content. Comparable mercury intrusion pore size distribution curves are obtained before and after stress release, showing little change in the configuration of inter-platelets pores within the clay matrix of the claystone. The swelling observed at constant water content is then related, to a water transfer from inter-platelets pores to intra-platelets pores, resulting in crystalline swelling within the smectite fraction of the inter-layer illite-smectite minerals.
机译：通过模仿在释放量计中的提取过程中，通过模拟压力变化来检查在法国东部的大深度（465米）中提取的粘土粘土标本中的应力释放效应。为此，首先将耐受肿胀的水合的样品在恒定的含水量下卸载。在应激释放之前和之后获得相当的汞侵入孔径分布曲线，显示粘土基粘土基质内的血小板间孔的构造几乎没有变化。然后在恒定水含量下观察到的肿胀与血小板间到血小板内孔的水转移到血小板孔隙中，导致层内透晶型矿物的层间级数内的结晶溶胀。

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