<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0016-7169</journal-id>
<journal-title><![CDATA[Geofísica internacional]]></journal-title>
<abbrev-journal-title><![CDATA[Geofís. Intl]]></abbrev-journal-title>
<issn>0016-7169</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geofísica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-71692024000301033</article-id>
<article-id pub-id-type="doi">10.22201/igeof.2954436xe.2024.63.3.1755</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Groundwater identification using geophysical tools and its implications for the stability of slopes in an open pit mine]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzzo Duz]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[César Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hartwig]]></surname>
<given-names><![CDATA[Marcos Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Queiroz Miano]]></surname>
<given-names><![CDATA[Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Ana Flávia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Estadual Paulista Department of Geology ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Federal University of Espírito Santo Department of Geology ]]></institution>
<addr-line><![CDATA[Alegre ES]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<volume>63</volume>
<numero>3</numero>
<fpage>1033</fpage>
<lpage>1043</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692024000301033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692024000301033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692024000301033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The open pit mining development begins with the opening of pits with the rock mass excavation and formation of slopes and berms for ore exploration. Knowledge about the geological conditions represents an important step in this process, since rock masses generally have heterogeneous characteristics and the presence of discontinuities can become an aggravating factor in the safety of operations. The characterization and classification of these discontinuities, as well as the identification of the groundwater in the rock mass, has a great importance to ensure the safety of operations during the mine's production process, in addition to ensure the effectiveness of its decommissioning process. The use of DC resistivity geophysical method has been increasing to characterization and identification lithological types and presence of water, since it is a non-invasive research tool with fast ability to obtain data. DC resistivity together with visual investigation methods, such as obtaining the discontinuities orientation and their alteration characteristics, provides important information for the characterization of the rock mass. Given this importance, the present work aimed to use DC resistivity to identify the presence of water and its correlation with lithology and rock mass structure in order to identify how these variables influence the occurrence of ruptures. To this end, two-dimensional resistivity sections were designed and related to visual inspection data and kinematic analyzes obtained from structural data of the rock mass. The integration of these results indicated that the ruptures present in the investigated mine slopes are related to zones whose predominant lithology is volcanic breccia with the presence of water in the subsurface. These ruptures compromise the stability of the slopes and consequently make the decommissioning mine process difficult.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El desarrollo de la minería a cielo abierto comienza con la apertura de tajos con la excavación del macizo rocoso y la formación de taludes y bermas para la exploración de mineral. El conocimiento de las condiciones geológicas representa un paso importante en este proceso, ya que los macizos rocosos generalmente tienen características heterogéneas y la presencia de discontinuidades puede convertirse en un agravante en la seguridad de las operaciones. La caracterización y clasificación de estas discontinuidades, así como la identificación del agua subterránea en el macizo rocoso, tiene gran importancia para garantizar la seguridad de las operaciones durante el proceso productivo de la mina, además de garantizar la efectividad de su proceso de desmantelamiento. El uso del método geofísico de resistividad eléctrica ha ido en aumento para la caracterización e identificación de tipos litológicos y presencia de agua, ya que es una herramienta de investigación no invasiva y con rápida capacidad de obtención de datos. La resistividad eléctrica junto con métodos de investigación visual, como la obtención de la orientación de las discontinuidades y sus características de alteración, proporciona información importante para la caracterización del macizo rocoso. Dada esta importancia, el presente trabajo tuvo como objetivo utilizar la resistividad eléctrica para identificar la presencia de agua y su correlación con la litología y la estructura del macizo rocoso con el fin de identificar cómo estas variables influyen en la ocurrencia de rupturas. Para ello, se diseñaron secciones de resistividad bidimensionales y se relacionaron con datos de inspección visual y análisis cinemáticos obtenidos a partir de datos estructurales del macizo rocoso. La integración de estos resultados indicó que las rupturas presentes en los taludes mineros investigados están relacionadas con zonas cuya litología predominante es de brecha volcánica con presencia de agua en el subsuelo. Estas rupturas comprometen la estabilidad de los taludes y en consecuencia dificultan el proceso de desmantelamiento de la mina.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[geophysics]]></kwd>
<kwd lng="en"><![CDATA[DC resistivity]]></kwd>
<kwd lng="en"><![CDATA[aquifer]]></kwd>
<kwd lng="en"><![CDATA[structural analyses]]></kwd>
<kwd lng="en"><![CDATA[ruptures]]></kwd>
<kwd lng="es"><![CDATA[geofísica]]></kwd>
<kwd lng="es"><![CDATA[resistividad eléctrica]]></kwd>
<kwd lng="es"><![CDATA[acuífero]]></kwd>
<kwd lng="es"><![CDATA[análisis estructural]]></kwd>
<kwd lng="es"><![CDATA[rupturas]]></kwd>
</kwd-group>
</article-meta>
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