Santiago MontserratUniversity of Chile · Advanced Mining Technology Center - AMTC
Santiago Montserrat
PhD
About
22
Publications
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245
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Citations since 2017
Introduction
Skills and Expertise
Publications
Publications (22)
Over the past decades, several numerical models have been developed to understand, simulate and predict debris flow events. Typically, these models simplify the complex interactions between water and solids using a single-phase approach and different rheological models to represent flow resistance. In this study, we perform a sensitivity analysis o...
Traditionally, interactions between tributary alluvial fans and the main river have been studied in the field and in the laboratory, giving rise to different conceptual models that explain their role in the sediment cascade. On the other hand, numerical modeling of these complex interactions is still limited because the broad debris flow transport...
Accepted paper
An extreme precipitation event produced catastrophic debris flows in central Chile during 29-31 January 2021 (austral summer). Our study focuses on the triggering factors and dynamic behavior of hail-debris flows affecting the small commune of Malloa (Central Valley), which caused 200 injured and 73 damaged houses. We carried out a...
Traditionally, interactions between tributary alluvial fans and the main river have been studied on the field and in the laboratory, giving rise to different conceptual models explaining its role in the sediment cascade. On the other hand, numerical modeling of these complex interactions is still limited because the broad debris flow transport regi...
The Mapocho River's upper basin (Chilean Central Andes) was studied as a proxy of a high-mountainous hydrothermally-altered (HMHA) system comprised by three sub-basins developed over very different rocks and submitted to different anthropic pressure: 1) a natural acid rock drainage (i.e., Yerba Loca), 2) a creek with mining activity in its headwate...
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![Dimensionless flow run-out, xf/ho\documentclass[12pt]{minimal}...](profile/Santiago-Montserrat/publication/351704422/figure/fig2/AS:1025409336496129@1621488045518/Dimensionless-flow-run-out-xf-hodocumentclass12ptminimal-usepackageamsmath_Q320.jpg)
Geophysical granular flows occur at the surface of the Earth and other planets with reduced atmospheric pressure. In this paper, we investigate the run-out of dam-break flows of particle-air mixtures with fine (d=75μm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy...
The natural occurrence of acid waters in mountainous porphyry Cu systems poses challenges for water management considering the increasing water demand and global environmental change. Unraveling the transport and fate of minerals and metals in these types of acidic river systems is crucial for environmental management. To this purpose, we develop a...
Over the past decades, several numerical models have been developed to understand, simulate and predict debris flow events. Typically, these models simplify the complex interactions between water and solids using a single-phase approach and different rheological models to represent flow resistance. In this study, we perform a sensitivity analysis o...
Over the past decades, many numerical models have been developed to understand, simulate and predict debris flow processes. Typically, these models simplify the complex interactions between water and solids using a single phase approach and different rheological models to represent flow resistance. Further, different rheological models have differe...
Debris flows present serious hazards to low-lying communities and local socio-economy. These events show to be increasing in frequency given recent climatic changes. Intense rainfall between 24th and 26th of March 2015 took place in the North of Chile. Due to this exceptional event, several debris flow events were triggered in sub-catchments causin...
The use of reverse osmosis membranes (RO) is the most used technology for water desalination; however, membrane biofouling is considered a critical issue affecting desalination plants. The incorporation of nanoparticles with antimicrobial properties into RO membranes has been reported as an effective route for enhancing the antibiofouling propertie...
![Dimensionless flow run-out, x/xo\documentclass[12pt]{minimal}...](profile/Santiago-Montserrat/publication/297755298/figure/fig3/AS:960338153463858@1605973866887/Dimensionless-flow-run-out-x-xodocumentclass12ptminimal-usepackageamsmath_Q320.jpg)
We report results of the run-out of experimental dam-break flows in a horizontal channel generated from the collapse of columns of fine (75 \(\upmu \)m) particles fluidized at various degrees. We find that the flow run-out (x) made dimensionless by the initial column length (\(x_{o})\) is a power function of the initial column height-to-length rati...
The term efficiency in hydraulic transport system design and operation has several possible interpretations. Whether it may stand for energy consumption, it may also aim to the minimization of the water or the carbon footprint. All these tentative means of efficiency should meet project and operational goals, including throughput constraints. The c...
The simultaneous efficient use of water and energy in long distance hydraulic transport of copper or iron concentrates in dynamic energy and/or water cost scenarios has been recently studied as an optimization problem (Ihle, Int. J. Miner. Process, 2012, submitted), including static input parameters of hydraulic interest, such as the specific gravi...
Pore fluid pressure variations play an important role in the motion of
natural granular flows like debris and pyroclastic flows. Pore pressure
in a defluidizing air-particle bed was investigated by means of
experiments and numerical modeling. Experiments consisted of recording
the defluidization process, measured as the decay of the basal pore
flui...
Analogue laboratory experiments on air-particle flows represent a useful
tool to investigate the mechanisms of propagation and deposition of
dense (or the dense part of) pyroclastic density currents. In this
context, we carried out experiments in the dam-break configuration and
studied the emplacement processes of analogue biphasic currents
generat...
The emplacement dynamics of pyroclastic flows were investigated through noninvasive measurements of the pore fluid pressure in laboratory air-particle flows generated from the release of fluidized and nonfluidized granular columns. Analyses of high-speed videos allowed for correlation of the pressure signal with the flow structure. The flows consis...
The physics of ash-rich pyroclastic flows were investigated through laboratory dam break experiments using both granular material and water. Flows of glass beads of 60-90 mum in diameter generated from the release of initially fluidized, slightly expanded (2.5-4.5%) columns behave as their inertial water counterparts for most of their emplacement....
En este artículo se presentan resultados experimentales sobre la interacción de flujos detríticos con barreras transversales, permeables e impermeables. Las primeras bloquean completamente el cauce y las segundas sólo de manera parcial. Las barreras fueron ubicadas en serie dentro de una canal rectangular por donde fluían mezclas de agua y sediment...
Projects
Projects (2)
Development of TiO2 nanomaterials and carbon-based materials able photo-transform As(III) into As(V) and capture the generated species, respectively. The efficiency of the materials was tested in simulated water sources, mimicking the ones found in the North of Chile, with arsenic concentrations of 1000 µg/L, demonstrating efficiencies major than 98% of As removal without lost its sorbent/photocatalytic properties at prototype scale
Director: Andreina Garcia
SOLARSENIC project pursues the upscaling, developing, and implementing a pilot plant for efficiently removing different arsenic species from water, through the photo-transformation of As(III) into As(V) and simultaneously to capture the generated species based on the employment of a bifunctional nanomaterial of titanium oxide able to make both processes in one step.
The project involves the fine-tuning of TiO2 nanotechnology, its assessment in real polluted water sources, and finally assembling a photo-reactor prototype to test it in isolated areas located in the north of Chile, reaching drinking water quality standards As concentration below 10 µg.L−1.
Director: Dr. Andreina García
