<mets:mets xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" OBJID="eprint_42926" LABEL="Eprints Item" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mets="http://www.loc.gov/METS/"><mets:metsHdr CREATEDATE="2026-05-24T21:26:48Z"><mets:agent TYPE="ORGANIZATION" ROLE="CUSTODIAN"><mets:name>Repository Universitas Negeri Padang</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_42926_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>Evaluasi Rancangan Geometri Peledakan Berdasarkan Hasil Fragmentasi Batuan dan Getaran Tanah Pada PT. Koto Alam Sejahtera Kabupaten Lima Puluh Kota Provinsi Sumatera Barat</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Muhammad Ilham</mods:namePart><mods:namePart type="family">Cahyadi</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Secara administratif lokasi pertambangan PT. Koto Alam Sejahtera berada di Jorong Polong Duo, Nagari Koto Alam, Kecamatan Pangkalan Koto Baru, Kabupaten Lima Puluh Kota, Provinsi Sumatera Barat. Kegiatan pemboran lubang ledak pada PT. Koto Alam Sejahtera menggunakan alat Furukawa Rock Drill PCR200 dan bahan peledak yang digunakan ialah Pindad ANFO (PANFO). Berdasarkan analisis distribusi hasil fragmentasi batuan dari data aktual geometri peleakan, rata – rata fragmentasi batuan hasil peledakan (selama 4 kali peledakan) yang lolos pada ukuran 60 cm dengan software split dekstop ialah 76,88%. Berdasarkan perhitungan getaran tanah (ground vibration) dari data aktual geometri peledakan menggunakan metode Du Pont/USBM predictor, didapat nilai PPV yang melebihi 5 mm/s terjadi pada tanggal 17 dan 22 Februari 2018, yaitu dengan nilai PPV sebesar 6,31 mm/s dan 5,76 mm/s. Berdasarkan hasil analisis software split desktop, didapat hasil fragmentasi batuan pada rancangan usulan geometri peledakan ialah 86,22%. Berdasarkan hasil perhitungan getaran tanah (ground vibration) metode Du Pont/USBM predictor, nilai PPV pada rancangan usulan II geometri peledakan ialah 3,63 mm/s.</mods:abstract><mods:classification authority="lcc">T Technology (General)</mods:classification><mods:classification authority="lcc">TN Mining engineering. Metallurgy</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2019-01</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas Negeri padang;TEKNIK PERTAMBANGAN FT UNP</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_42926"><mets:rightsMD ID="rights_eprint_42926_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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    </mods:useAndReproduction></mets:xmlData></mets:mdWrap></mets:rightsMD></mets:amdSec><mets:fileSec><mets:fileGrp USE="reference"><mets:file OWNERID="https://repository.unp.ac.id/id/eprint/42926/1/final_B1_11_MUHAMMAD_ILHAM_CAHYADI_196_14137064_2019.pdf" ID="eprint_42926_85917_1" SIZE="833077" MIMETYPE="application/pdf"><mets:FLocat LOCTYPE="URL" xlink:href="https://repository.unp.ac.id/id/eprint/42926/1/final_B1_11_MUHAMMAD_ILHAM_CAHYADI_196_14137064_2019.pdf" xlink:type="simple"></mets:FLocat></mets:file></mets:fileGrp></mets:fileSec><mets:structMap><mets:div ADMID="TMD_eprint_42926" DMDID="DMD_eprint_42926_mods"><mets:fptr FILEID="eprint_42926_document_85917_1"></mets:fptr></mets:div></mets:structMap></mets:mets>