Abstract
Since ground water supplies the basin margin area laterally in karst basin area, there is a certain confined head in the basin area. Generally, there’s a thicker layer of secondary red clay in the upper part of the basin. It belongs to the high liquid limit clay which has very low permeability. The bedrock is mainly dolostone, the upper of which exists discontinuous weathered sand. The weathered sand is a layer of strong permeability. And the lower bedrock has weak permeability. This paper takes the calculation of immersion problem in the protected zone of Changshou Ditch of Daton Gorge water control project’s reservoir area as target, and studies deeply about the characteristics of bondwater dynamics in cohesive soil in state of confined head. On the foundation of conventional Kaminski formula, we revise the formula based on the effect of bondwater dynamics. The predictions are more close to the actual working condition. And we provide measures to deal with this situation; it has referential meaning for similar projects.
Published Version
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