THE BELARUS GROUND STRENGTH CHARACTERISTICS DEPENDENCE FROM GENESIS

Abstract

The article is devoted to the dependence of the ground strength characteristics from its physical state and genesis. The author reveals Belarus deposits formation history, and describes the territory, the relief of the country. The results of numerous studies as well as their authors are named in the article. Much attention is paid to the results of studies of the weak and specific ground characteristics. The soils, which have normative values of characteristics, are listed in the article.

Based on the history of formation of deposits, the importance of accounting for genesis in determining the strength characteristics of soils and grounds are shown. The article proves that the earlier moraine grounds were additionally pressed by the young deposits, so as a result earlier moraine grounds have a high density, an angle of internal friction and adhesion. The author notes that for safety purposes the ground characteristics of have been averaged and adopted in normative documents, and this fact is  the reason of the uneconomical design.

The angle of internal friction and adhesion revealed dependences from the genesis of the soil, its density and the state of water saturation were obtained by processing numerous reports performed on the territory of the whole republic. The analysis was carried out for grounds, the characteristics (humidity, soil density, density of ground particles, angle of internal friction, adhesion) of which were determined from monoliths of undisturbed structure under laboratory tests. The sample amount of the definition for each ground in the indicated boundaries was equal to 32-74 samples. 

The obtained dependencies were tested in the geological organizations and received a positive evaluation. The research results application allows to reduce the field and laboratory exploration period, as well as to make more economical design decisions.