Overview
ABSTRACT
Storm overflows are very diverse according to their function and typology in a combined sewerage network. Indeed these devices are designed and operated in extremely varied forms which enables them to ensure hydraulic functioning for highly variable topographic and hydraulic features. The choice and diagnostic of an overflow thus require a precise analysis of its environment and operating context. After having introduced several definitions and terms, this article presents the general typology and the existing configurations.
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Read the articleAUTHORS
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José VAZQUEZ: Senior Lecturer in Hydraulics - Strasbourg National School of Water and Environmental Engineering (ENGEES)
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Claude JOANNIS: State public works divisional engineer - Head of the "Hydrology-Sanitation" team, "Water and Environment" division, Laboratoire Central des Ponts et Chaussées (France)
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Mathieu ZUG: Head of Sanitation Systems Control team - Technical Department VEOLIA EAU Western Region
INTRODUCTION
Storm overflows are a very common type of structure in combined sewer systems, i.e. those with a single collection system for wastewater and stormwater. To make this type of collection system compatible with the requirements of protecting the receiving environment and protecting the city against flooding, storm overflows are designed and operated in a wide variety of ways, which we seek to clarify in this report, notably by proposing a terminology.
We also define a general typology of the many possible weir configurations, referred to in the solutions proposed in the
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Functions and types of storm overflows
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