The dry closure of the Almagrera tailings dam: detailed modelling, monitoring results and environmental aspects

Justo, J. L.; Morales‐Esteban, Antonio; Justo, E.; Jiménez-Cantizano, Francisco A.; Durand, P.; Vázquez-Boza, Manuel

doi:10.1007/s10064-018-1342-2

Cited by 12 publications

(6 citation statements)

References 21 publications

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“…The geotechnical properties of the dam materials are given in Table 1 (in regard to in situ laboratory experiments, extracted from research [41] with some minor corrections).…”

Section: Location and Geology Of The Almagrera Tailings Dammentioning

confidence: 99%

“…Very few works describe dynamic balance analyses for mine waste fill dams. Execution of the dry closure of the Almagrera mine waste fill dam is currently almost finished, although some final operations are still required [41]. A dynamic calculation, introduced in a previous publication [42] is developed here.…”

Section: Introductionmentioning

confidence: 99%

“…Execution of the dry closure of the Almagrera mine waste fill dam is currently almost finished, although some final operations are still required [41]. A dynamic calculation, introduced in a previous publication [42] is developed here. Initially, the probabilistic hazard equation for the site has been figured out.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

Morales-Esteban,

Alpañés,

Castillo

et al. 2024

Sustainability

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In light of growing concerns over sustainability, particularly in the wake of environmental disasters like the Aznalcollar dam break, the Spanish authorities have heightened their awareness of issues surrounding ore tailings management.The main aim of this paper is to study the dynamic behavior for the dry closure of the Almagrera dam under the action of an earthquake. This study was carried out with the Plaxis 2D v9.02 program, which uses the finite element (FE) method. The dynamic analysis of the dam was interpreted in terms of deformations, displacements and principal stresses. The construction of the Uniform Seismic Hazard Acceleration Response Spectrum (USHARS) and the selection of real accelerograms for the time-history dynamic calculations is a noted feature of this research. Numerical analyses show that the dam is safe enough because a failure surface has not been formed, although several plastic zones may appear in the dam. The FE study of deformations display that the tailings may attain large deformations, displacements and failure, although this does not jeopardize the safety of the dam where the displacements are smaller than 3 mm. Neither the tailings nor the dam are expected to suffer liquefaction. It was determined that the 0.09 g threshold value is not exceeded in the acceleration-time graphs on the old reservoir field surface, which is the most critical situation.

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“…The geotechnical properties of the dam materials are given in Table 1 (in regard to in situ laboratory experiments, extracted from research [41] with some minor corrections).…”

Section: Location and Geology Of The Almagrera Tailings Dammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

Morales-Esteban,

Alpañés,

Castillo

et al. 2024

Sustainability

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“…The resulting contamination of the area will persist for many years and affect its ecological function. Portions of the ephemeral stream were also damaged, severely diminishing its economic value (Justo et al, 2019).…”

Section: Site Description and Background Of The Accidentmentioning

confidence: 99%

Cost–benefit analysis of restoring an ephemeral desert stream after an ecological accident

Becker

Gross²,

Lavee

2020

Water Policy

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This paper presents a methodology for examining the net benefit of site rehabilitation after an ecological disaster. While restoration of the site seems reasonable on the face of it, the cost of proactive restoration can be very high. In this article, we present a tool for decision makers to decide on the optimal route to rehabilitation – proactive or natural rehabilitation (or some combination thereof). We present a case study of an ecological catastrophe that occurred in June 2017 at an ephemeral desert stream in the south of Israel. We estimated the restoration costs and the benefits of restoration over the relevant time frame using a contingent valuation method. Comparing the present costs and benefits revealed a net present value of ILS 355.5 million in favor of proactive restoration of the stream. We also demonstrate that not all sections of the stream pass the benefit cost test, so a higher net benefit could be achieved through partial restoration. Our study demonstrates the importance of cost–benefit analysis when policy makers are contemplating proactive versus natural restoration.

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“…The geological body composed of gravel or block stone as aggregate and clay and sand as filler material is defined as bimsoils, which is widely distributed in nature (Xu et al 2008;Belkhatir et al 2013;Park and Santamarina 2017). Meanwhile, projects such as tunnels and underground engineering, slopes, hydropower dams and road foundations are inevitably built on engineering geological bodies of bimsoils, and these areas usually are extremely water-rich environment (Huang et al 2016;Justo et al 2019;Liu et al 2020). Therefore, the research on the stability of bimsoils is an important part to analyze the geological disasters of bimsoils as well as the safe construction and operation of engineering (Khorasani et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the permeability and seepage characteristics of bimsoils

Wang

Zheng

Wang

et al. 2021

Geomatics, Natural Hazards and Risk

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Bimsoils are a loose rock and soil system, and the occurrence of geological hazards is closely related to water. To investigate the permeability and seepage characteristics of bimsoils, factors on permeability are discussed in detail considering cementation state, and variable mass seepage is studied tentatively with selfdeveloped apparatus. Results shown that the order of factors on permeability is rock content > cementation degree > rock size > Talbot index (describing the mass percentage for different particle size of sand), and there are significant differences between factors. Besides, permeability generally increases with the increase of rock content and decreases with the increase of cementing agent content, while increases slightly due to agglomeration effect at the clay content of 8%. It is more obvious for reducing the permeability of higher rock content bimsoils by strong cementing agent, however, it tends to be same eventually with cement content increasing. The seepage of bimsoils is dominated by fine particle losses, and the secondary inrush occurs under the larger particle radius ratio. Moreover, particle losses and the time needed for secondary inrush both increase with the increase of particle radius ratio. The results would provide consults for the preparation of similar materials and the prevention of tunnels and underground engineering disasters.

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The dry closure of the Almagrera tailings dam: detailed modelling, monitoring results and environmental aspects

Cited by 12 publications

References 21 publications

Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

Dynamic Analysis of the Almagrera Tailings Dam with Dry Closure Condition

Cost–benefit analysis of restoring an ephemeral desert stream after an ecological accident

Experimental study on the permeability and seepage characteristics of bimsoils

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