Predicting landslips caused by rainstorms in residual/colluvial soils of Nigerian hillside slopes |
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| Authors: | C O Okagbue |
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| Institution: | (1) Department of Geology, University of Nigeria, Nsukka, Nigeria |
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| Abstract: | Soil slips, some turning into debris flows, have become common in Nigerian hillside slopes. They have already caused losses of millions of dollars in agricultural land and products and have become a source of fear for the people living near the sites of occurrence. During the year 1987, no less than four were recorded in a period of six weeks; all occurred during the rainy season and were caused by rainstorms.Stability analyses have been carried out and stability charts developed to help in predicting these slips. Prediction depends on knowledge of the slope inclination, the rise of the water table with respect to the thickness of the soil mantle that is subject to sliping, the saturated unit weight of the soil mantle and the effective angle of shearing resistance of the soil. |
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| Keywords: | Prediction landslips hillside-slopes |
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