Environmental Issues Connected to the Quarry Lakes and Chance to Reuse Fine Materials Deriving from Aggregate Treatments

Castagna, Sara; Dino, Giovanna Antonella; Lasagna, Manuela; Luca, Domenico Antonio De

doi:10.1007/978-3-319-09048-1_13

Cited by 20 publications

(13 citation statements)

References 2 publications

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“…Natural flooding -this method uses the groundwater potential (the main source characterized by: flow, filtration coefficient, flow rate, piezometric level etc.) to which is added the water from precipitation and superficial runoff [10]. It has the advantage of low costs, but the complete flooding of a large residual gap can be long lasting.…”

Section: Description Of the Flooding Processmentioning

confidence: 99%

Influence of the flooding speed of former lignite open pits on the stability of final slopes

2020

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Flooding the residual gaps of former lignite open pits is often applied worldwide, offering opportunities for the use of the lake and the reclaimed land, as well as many benefits, ranging from the restoration of ecosystems to the development of the local economy. The flooding process is conditioned by the available quantities of water from natural and/or artificial sources. Flooding can be done either by natural methods (underground water inflow plus intake of water from rainfall and superficial drainage), or by natural and artificial methods (water adductions from superficial collectors). Unlike artificial flooding, natural flooding has the advantage of reduced costs, but it is a long-lasting process. Depending on the flooding speed, as a result of rising water level and saturation of rocks from the final slopes, geotechnical phenomena such as landslides may occur. The paper aims at establishing the dependence between the rhythm of raising the water level in the lake and the geotechnical behavior of the rock in the internal dump. Depending on this, there is a need to accelerate the flooding process through adductions, as the hydrostatic pressure manifested on the final slopes determines the increase of their stability reserve.

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Section: Description Of the Flooding Processmentioning

confidence: 99%

Influence of the flooding speed of former lignite open pits on the stability of final slopes

2020

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“…2) and the Quaternary alluvial deposits unit (f and g in Fig. 2) (Bortolami et al 1976;Bove et al 2005;De Luca et al 2007, 2014Castagna et al 2015aCastagna et al , 2015b. The shallow unconfined aquifer exists in the Quaternary alluvial deposits unit (Middle Pleistocene-Holocene), which is characterised by coarse gravel and sand with subordinate silty-clayey intercalations.…”

Section: Site Descriptionmentioning

confidence: 99%

The use of multilevel sampling techniques for determining shallow aquifer nitrate profiles

Lasagna

Luca

2016

Environ Sci Pollut Res

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Nitrate is a worldwide pollutant in aquifers. Shallow aquifer nitrate concentrations generally display vertical stratification, with a maximum concentration immediately below the water level. The concentration then gradually decreases with depth. Different techniques can be used to highlight this stratification. The paper aims at comparing the advantages and limitations of three open hole multilevel sampling techniques (packer system, dialysis membrane samplers and bailer), chosen on the base of a literary review, to highlight a nitrate vertical stratification under the assumption of (sub)horizontal flow in the aquifer. The sampling systems were employed at three different times of the year in a shallow aquifer piezometer in northern Italy. The optimal purge time, equilibration time and water volume losses during the time in the piezometer were evaluated. Multilevel techniques highlighted a similar vertical nitrate stratification, present throughout the year. Indeed, nitrate concentrations generally decreased with depth downwards, but with significantly different levels in the sampling campaigns. Moreover, the sampling techniques produced different degrees of accuracy. More specifically, the dialysis membrane samplers provided the most accurate hydrochemical profile of the shallow aquifer and they appear to be necessary when the objective is to detect the discontinuities in the nitrate profile. Bailer and packer system showed the same nitrate profile with little differences of concentration. However, the bailer resulted much more easier to use.

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“…The low plain sectors are generally discharge areas, and the Po River represents the main regional discharge axis for the groundwater flow (Lasagna et al, 2016a). Along the main watercourses of Piedmont plain more than 200 quarry lakes are present (Castagna et al, 2015a(Castagna et al, , 2015bDe Luca et al, 2007) connected to quarries for extraction of sand and gravel.…”

Section: Study Areamentioning

confidence: 99%

Hydrogeology of the western Po plain (Piedmont, NW Italy)

2020

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This paper describes the hydrogeological map of the western Po Plain, located in Piedmont (north-western Italy). Po plain represents a hydrogeological system of European relevance, and the Piedmont Plain is the most important groundwater reservoir of the Region. The 1:300,000 scale map was realised using previous and new data to update the knowledge of this area. The map provides information about the hydrogeological complexes and their type and degree of permeability, water table levels and depth, piezometric level fluctuation, lithostratigraphic cross-sections, thickness, and percentage of the permeable deposits between 0 and 50 m from the ground surface. All this information is essential to public administrations, stakeholders, researchers, and professionals for defining possible tools for groundwater protection and management and for planning new groundwater exploitation (i.e. municipal drinking water supplies).

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Environmental Issues Connected to the Quarry Lakes and Chance to Reuse Fine Materials Deriving from Aggregate Treatments

Cited by 20 publications

References 2 publications

Influence of the flooding speed of former lignite open pits on the stability of final slopes

Influence of the flooding speed of former lignite open pits on the stability of final slopes

The use of multilevel sampling techniques for determining shallow aquifer nitrate profiles

Hydrogeology of the western Po plain (Piedmont, NW Italy)

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