By the results of analysis, it was established that the value and development of pore pressure are greatly influenced by the degree of water saturation S0 of clayey soil at its placement into the dam body. The considered dam has an inclined sandy loam core. With the aid of numerical modeling of stress-strain state, the impact of pore pressure on potential development of cracks in the core of a 330 m high ECRD was studied. The author proposes the criterion of core crack resistance based on consideration of pore pressure. ![]() However, this theory ignores the presence of the force in the soil core which fractures it from the inside, i.e. It is usually considered that the cause of hydraulic fracturing is presence of micro cracks in the core, which open due to deficit of compressive stresses at penetration of reservoir water into it.
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