The degradation effect and mechanism by water-rock interaction in the layered sandstone in the Three Gorges reservoir area

Cyclic wetting and drying process of the reservoir area has been affecting the long term stability of the reservoir area at the bankside (due to the degradation in the physio-mechanical properties of the sandstone). To simulate this phenomenon, an experimental program was designed and executed on the layered sandstone brought from the Three Gorges reservoir area. The following points were noticed based on the laboratory results: (1) The...