There are a number of examples of slope deformation because of construction cracksdevelopment. Slope stability assessment for these conditions is one of the problems inengineering geology and soil mechanics. Shrinkable fissuring development in nature is resultof irregular distribution of temperature and humidity in drying soils. Because of stretchingstresses on slopes, shrinkage cracks are being generated at small intervals of soil humidityalterations.Orientation of shrinkable fissuring during generation is perpendicular to slope surface, butwith depth, it changes to parallel one. Such cracks lead to slackening of slopes stability. Theactual stability of slopes for noted conditions depends not only on method analyses, but alsoon correct selection of strength properties of soils - angle of internal friction and cohesionvalue. Reliability of slopes stability factor at landslide terrains directly depends on reliabilityof definition of these parameters at sliding sites. . Revealing of influence of shrinkablefracturing of clays on shear strength we shall consider on an example of sliding sites of a damof water reservoir at Gadir-Al-Bustan (Syria).
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