Parametric support for calculations of long-term stability of structures during construction and reconstruction of buildings in the territory of development of weak water-saturated sandy-clay sediments
- 1 — G.V. Plekhanov Saint Petersburg Mining University
- 2 — G.V. Plekhanov Saint Petersburg Mining University
Abstract
The main leading factors (changes in the stress state of rocks at the base of structures, physico-chemical and biochemical conditions) determining the long-term stability of surface structures are analyzed. It is noted that filtration consolidation is not of practical importance when considering the compressibility of rocks. The influence of physico-chemical factors on sandy-clayey rocks is evident when polluted by runoff with a wide range of mineralization and composition. The effect of intensification of microbial activity, during which biochemical gases are formed and the increase in the content of bacterial mass, on reducing the strength and deformation capacity of clayey rocks is particularly emphasized. It was found that the transformed clay rocks are usually characterized by the presence of quasi-plastic state.