Factors affecting the pre-filling probability of water storage tanks

Raimondi, Anita

doi:10.2495/wp120411

Cited by 18 publications

(17 citation statements)

References 8 publications

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“…In particular, the authors [12][13][14], have deeply investigated the problem of pre-filling of the storage capacity from previous rainfall events and its relation with control variables and management rules of releases. Pre-filling volumes from previous rainfall events high increase the probability of spills into receiving waters, whose limitation is one of the main targets in the modelling of stormwater detention facilities.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic analysis of spills from stormwater detention facilities

Raimondi¹

2014

WIT Transactions on the Built Environment

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Stormwater detention facilities are important tools for flood control in modern urban drainage systems, since they reduce uncontrolled discharges into receiving water bodies and improve the efficiency of stormwater treatment plants. In their modelling it is important to limit the number and the amount of spills to ensure the maximum efficiency of the storage capacity. In this paper, the overflow probability distribution function from a stormwater detention facility is derived; the possibility of pre-filling of the storage capacity from previous runoff events, that can strongly influence spilled volumes, is considered. Effects of the control variables and of two different regulation rules on resulting expressions are investigated and discussed. Finally, an application to a case study is presented.

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Section: Introductionmentioning

confidence: 99%

Probabilistic analysis of spills from stormwater detention facilities

Raimondi¹

2014

WIT Transactions on the Built Environment

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“…However, its use would involve a considerable complication in the integration of the expressions for the estimation of pre-filling probability. Becciu and Raimondi (2012) assumed a double-exponential distribution that better fitted the frequency distribution of the observed data for rainfall depth and interevent time, maintaining the exponential distribution for rainfall duration. The double-exponential distribution may be easily integrated but derived expressions are more complex.…”

Section: Case Studymentioning

confidence: 99%

“…Pre-filling from previous events is then neglected and underestimation of the needed storage may occur or, which is the same, the return period assumed in design is overestimated especially for low outflow rates and some management rules (Becciu and Raimondi 2012).…”

Section: Introductionmentioning

confidence: 99%

On pre-filling probability of flood control detention facilities

Raimondi

2014

Urban Water Journal

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Flood control detention facilities are widely used for stormwater control in urban areas. Standard design procedures are in most cases based on the design storm approach: a single flood event at a time is considered, at the beginning of which the facility is assumed completely empty. The possibility of pre-filling from previous events is then neglected and underestimation of storage volume may occur. In this paper an analytical probabilistic approach to estimate the probability of pre-filling is presented and its effects, due to outflow rate and storage volume, are investigated. Two different strategies for the outlet control are analysed. Results are validated on a case study.

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“…a limit of 20 l/s/ha was considered for discharges in the sewer network, as provided by local regulations. the possibility of system storage pre-filling from previous events wasn't considered [17,18].…”

Section: Linear Infiltration-exfiltration Systemmentioning

confidence: 99%

Infiltration-exfiltration system for stormwater runoff volume and peak attenuation

Marchioni¹

2018

Int. J. SAFE

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InfIltratIon-exfIltratIon system for stormwater runoff volume and peak attenuatIon marIana marchIonI & gIanfranco beccIu politecnico di milano abstract urbanization alters the hydrological cycle increasing surface runoff water volume and peak flow. the traditional approach on urban drainage is being updated to an integrated approach of managing the water on its source. this study proposes a strategy based on urban retrofit of impervious surfaces using an infiltration-exfiltration linear system of runoff collection. the proposed system is based on street side channels and is composed by a porous asphalt top layer, aggregates base and drainage underdrain. the aims are to promote infiltration, filtration and adsorption of stormwater. storm water management model was used to simulated pre and post-retrofit response for extreme single events on the city of milan from 2006 to 2015. the system has positive effects on runoff reduction and hydrograph attenuation reaching from 18% reduction to full infiltration of runoff volume.

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Factors affecting the pre-filling probability of water storage tanks

Cited by 18 publications

References 8 publications

Probabilistic analysis of spills from stormwater detention facilities

Probabilistic analysis of spills from stormwater detention facilities

On pre-filling probability of flood control detention facilities

Infiltration-exfiltration system for stormwater runoff volume and peak attenuation

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