Wpływ wilgotności początkowej na zdolność pęcznienia gruntów ilastych fliszu karpackiego

The paper presents results of research associated with expanding clay slate from Carpathian flysh, near water reservoir in Świnna Poręba. Examination were associated with influence of inclination laminae this soils. The laminae constitute peculiar texture which is affecting on size of expanding and water also much easier penetrates deep layers between the laminae. This property coming into new landslides.