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Hydraulic Conductivity Modeling of Fractured Rock at Grasberg Surface Mine, Papua-Indonesia

Journal of Engineering and Technological Sciences · Vol. 49 No. 1 (2017) · hlm. 37–56

DOI
10.5614/j.eng.technol.sci.2017.49.1.3
ISSN
2338-5502, 2337-5779
Terbit
2017-06-07
Penerbit
Directorate for Research and Community Services, Institut Teknologi Bandung
Bahasa
eng

Abstrak

Packer tests and slug tests were conducted at 49 points at the Grasberg surface mine, Indonesia to obtain hydraulic conductivity data. The HC-system approach, which relies on rock quality designation, lithology permeability index, depth index, and gouge content designation, was applied. Geotechnical drill holes in 441 locations, consisting of 4,850 points of information, were used to determine the K values using the equation K = 2x10-6x HC0.5571. The K values, which were within the range of 10-8 and 10-5 m/s, were distributed into five alternative 3D distributions using Ordinary Kriging (OK) and Artificial Neural Network (ANN). The result of the ANN modeling showed that some of the K values, with log K varying from -10.51 m/s to -3.09 m/s, were outside the range of the observed K values. The OK modeling results of K values, with log K varying from -8.12 m/s to -5.75 m/s, were within the range of the observed K values. The ANN modeled K values were slightly more varied than the OK modeled values. The result of an alternative OK modeling was chosen to represent the existing data population of flow media because it fits well to the geological conditions.

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  • Bandung Institute of Technology
  • Universitas Pembangunan Nasional Veteran Yogyakarta
  • Institut Teknologi Adhi Tama Surabaya
  • Sumatera Institute of Technology
  • Meteorological, Climatological, And Geophysical Agency
  • Universitas Airlangga
  • State University of Malang
  • Afiliasi tidak diketahui
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Rekan penulisOrganisasiArtikel bersama
Taufan MarhaendrajanaBandung Institute of Technology3
Iftikhor FaadhilahBandung Institute of Technology2
Wahyu SunyotoAfiliasi tidak diketahui2
Gunawan HandayaniBandung Institute of Technology2
Reza Adhi FajarBandung Institute of Technology2
Tri Chandra PamungkasBandung Institute of Technology2
Rahmat FadhilahSumatera Institute of Technology1
Irwan IskandarBandung Institute of Technology1
Sidik PramonoMeteorological, Climatological, And Geophysical Agency1
Yohana Noradika MaharaniUniversitas Pembangunan Nasional Veteran Yogyakarta1
Arif Rianto Budi NugrohoUniversitas Pembangunan Nasional Veteran Yogyakarta1
Suharsono SuharsonoUniversitas Airlangga1
Adrianto AdriantoBandung Institute of Technology1
Sutopo SutopoBandung Institute of Technology1
Eko Teguh ParipurnoUniversitas Pembangunan Nasional Veteran Yogyakarta1
Yazid FananiUniversitas Pembangunan Nasional Veteran Yogyakarta1
Ahmad MushoffaInstitut Teknologi Adhi Tama Surabaya1
Andris Emanuel KorompisInstitut Teknologi Adhi Tama Surabaya1
Muhammad Rizky Redy AsmaraInstitut Teknologi Adhi Tama Surabaya1
Dwi Fitri YudwiantoroUniversitas Pembangunan Nasional Veteran Yogyakarta1
Amega YasutraBandung Institute of Technology1
Fahrizal MaulanaBandung Institute of Technology1
SutopoState University of Malang1
AdriantoAfiliasi tidak diketahui1
Kuntjoro Adji SidartoBandung Institute of Technology1
Tutuka AriadjiBandung Institute of Technology1
Agus WahyudiBandung Institute of Technology1

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Sumber metadata: OAI-PMH (metadata jurnal) https://journals.itb.ac.id/index.php/jets/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Hydraulic Conductivity Modeling of Fractured Rock at Grasberg Surface Mine, Papua-Indonesia</dc:title>
	<dc:creator>Cahyadi, Tedy Agung</dc:creator>
	<dc:creator>Widodo, Lilik Eko</dc:creator>
	<dc:creator>Syihab, Zuher</dc:creator>
	<dc:creator>Notosiswoyo, Sudarto</dc:creator>
	<dc:creator>Widijanto, Eman</dc:creator>
	<dc:subject xml:lang="en-US">artificial neural network (ANN)</dc:subject>
	<dc:subject xml:lang="en-US">fractured rock</dc:subject>
	<dc:subject xml:lang="en-US">HC-system</dc:subject>
	<dc:subject xml:lang="en-US">spatial hydraulic conductivity</dc:subject>
	<dc:subject xml:lang="en-US">ordinary kriging (OK).</dc:subject>
	<dc:description xml:lang="en-US">Packer tests and slug tests were conducted at 49 points at the Grasberg surface mine, Indonesia to obtain hydraulic conductivity data. The HC-system approach, which relies on rock quality designation, lithology permeability index, depth index, and gouge content designation, was applied. Geotechnical drill holes in 441 locations, consisting of 4,850 points of information, were used to determine the K values using the equation K = 2x10-6x HC0.5571. The K values, which were within the range of 10-8 and 10-5 m/s, were distributed into five alternative 3D distributions using Ordinary Kriging (OK) and Artificial Neural Network (ANN). The result of the ANN modeling showed that some of the K values, with log K varying from -10.51 m/s to -3.09 m/s, were outside the range of the observed K values. The OK modeling results of K values, with log K varying from -8.12 m/s to -5.75 m/s, were within the range of the observed K values. The ANN modeled K values were slightly more varied than the OK modeled values. The result of an alternative OK modeling was chosen to represent the existing data population of flow media because it fits well to the geological conditions.</dc:description>
	<dc:publisher xml:lang="en-US">Directorate for Research and Community Services, Institut Teknologi Bandung</dc:publisher>
	<dc:date>2017-06-07</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journals.itb.ac.id/index.php/jets/article/view/2273</dc:identifier>
	<dc:identifier>10.5614/j.eng.technol.sci.2017.49.1.3</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Engineering and Technological Sciences; Vol. 49 No. 1 (2017); 37-56</dc:source>
	<dc:source>2338-5502</dc:source>
	<dc:source>2337-5779</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journals.itb.ac.id/index.php/jets/article/view/2273/2501</dc:relation>
</oai_dc:dc>