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Library | Item Barcode | Call Number | Material Type | Item Category 1 | Status |
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Searching... | 30000010237648 | TC549 C54 2010 | Open Access Book | Book | Searching... |
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Summary
Summary
Check dams are a potentially effective instrument for planning of hydrological risks and soil conservation. Cross structure sequences have been used in numerous areas in the world to control flooding, recharge aquifers and stabilise mountain streams, gullies and high-gradient ephemeral channels. Nevertheless, it is little known of the effectiveness of check dams and their morphological effects. This book is an attempt to compile different based-field and laboratory research works in torrential head water areas. Bed stability variations will be investigated according to check dams types, bedrock control, bed slope, channel roughness, lateral sediment input, and highly variable sediment transport capacity. Though the main purpose of check dams is to stabilise the channel bed and diminish the boundary sheer stress reaching a minor longitudinal slope, they can reduce the volume of channel-stored material favouring local scour processes downstream and occasionally destabilise the hill slopes upstream.
Table of Contents
Preface |
Traditional uses of check dams: a brief global history |
Criteria for optimising check dam location and maintenance requirements |
Modern strategies for torrent control: slit and W-weir check dams |
Check dams in the torrent control practice in small mountainous catchments |
Block ramps for torrent control and stream restoration |
Effectiveness of check dams in the reservoir sedimentation control under torrential conditions |
Managing stream morphology with check dams |
Sediment transportation from bed-load to debris-flow and its control by check dams in torrential streams |
Filtering-retention check dams design in mountain rivers |
The effectiveness of check dams in controlling upstream channel stability |
Induced morphological changes affecting the stability of check dams systems |
Local scouring at check dams in mountain rivers |
Bed scour-sedimentation balance induced by check dams in semiarid catchments with different lithology |
Upstream and downstream effects of check dams in braided rivers, Central Pyrenees |
Index |