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All Journal Journal Transformation of Mandalika Jurnal Riset Teknik Pertambangan INTAN Jurnal Penelitian Tambang Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Tommy Trides
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Transportation

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Analisis Karakteristik Tanah Berdasarkan Uji Lapangan Sondir (Cone Penetration Test) & Uji Laboratorium pada PIT North PT Karya Putra Borneo Yuana Saputra; Revia Oktaviani; Rety Winonazada; Tommy Trides; Albertus Juvensius Pontus
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 1 (2026): Februari: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i1.1329

Abstract

This study aims to analyze the characteristics of the soil at PIT North with two highwall and lowwall locations at PT Karya Putra Borneo, Kutai Kartanegara Regency, East Kalimantan Province. The research method was carried out by collecting primary data from the results of field tests using the sondir method with the Cone Penetration Test(CPT) tool and laboratory tests using physical properties, specific gravity, grain size, soil consistency, and consolidation tests, as well as secondary data from the results of literature studies. The parameters analyzed for soil characteristics include the sondir cone resistance (qc) value, grain size fraction distribution, soil plasticity index, and the rate of land subsidence through consolidation. The results showed that at PIT North the highwall area had a qc value of 5.6 Mpa, Fr 0.2%, IP 8.06%, Cc 1, a large rate of land subsidence of 3.3 mm with a settlement period of 4 years. In the lowwall area with a qc value of 10.31 Mpa, Fr 0.16%, IP 6.39%, Cc 0.535, the rate of settlement was 4.4 mm with a settlement period of 3 years. From these results, it is concluded that the soil at the highwall and lowwall locations has different compressibility, seeing the different soil Cc values and the soil plasticity index that affect the compressibility level of the soil and the value of the land settlement rate.
Studi Pengaruh Derajat Kejenuhan Terhadap Kuat Geser Tanah Anandyta Suci Ramdani; Revia Oktaviani; Ardhan Ismail; Tommy Trides; Albertus Juvensius Pontus
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 1 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i1.1341

Abstract

Soil strength characteristics are strongly influenced by its physical and mechanical properties, one of which is shear strength. Soil shear strength is affected by cohesion (c), internal friction angle (ϕ), and soil moisture conditions. In open-pit mining conditions, soil moisture content is greatly influenced by rainfall and water seepage, which can increase the degree of saturation within the soil mass. An increase in the degree of saturation generally leads to a rise in pore water pressure, thereby reducing the effective normal stress and resulting in a decrease in soil shear strength. This study aims to determine the effect of the degree of saturation on soil shear strength. This research employs a quantitative method to analyze the influence of the degree of saturation under three conditions (natural, dry, and saturated) on soil shear strength through laboratory testing using the direct shear test. The tests conducted include soil physical properties testing in accordance with SNI 1965-2008, specific gravity testing based on SNI 1964-2008, and soil shear strength testing following SNI 3420-2016. The results indicate that the average degree of saturation under natural conditions is 64.63% with a cohesion value of 7.4 kN/m², under dry conditions is 33.18% with a cohesion value of 8.2 kN/m², and under saturated conditions is 83.08% with a cohesion value of 3 kN/m². It can be concluded that a higher degree of saturation or more saturated soil samples result in lower cohesion values, whereas a lower degree of saturation or drier soil samples lead to higher cohesion values.
Co-Authors Agus Winarno Al Mulyadi Albert Juvensius Pontus Albertus J Pontus Albertus Juvensius Albertus Juvensius Pontus Albertus Pontus Aldicho Alfiandy Suhendik Amarullah Amarullah Anandyta Suci Ramdani Andreas Marojahan Gurning Ardhan Ismail Arya Mu’min Wally Bayu Indra Dermawan Benny Christian BB Berliani Wahyu Ningrum Bunga Bunga Desi Permatasari Djuwita Dela Safitri Eghi Eghi Eka Ely Febrianty Evon Seplika Kadang Fadli Fadli Farah Dinna Febryantho Pasiakan Fery Ferdiansyah Gideon Samari Suno Harjuni Harjuni Hasan Henny Magdalena Ibnu Syafi’i Rhamadany Juan, Juan Kasbillah Koeshadi Sasmito Lucia Litha Lucia Litha Respati Marlinus Matius Lollong Melki Marten Muhammad Aji Satria Mandiri Muhammad Ashar Alias Suara Muhammad Hafidz Muhammad Hamzah Muhammad Iksan Hamsyah MUHAMMAD ILHAM Muhammad Rahul Shidiq Muhammad Rayhan Fhadillah Musmulyanas Mus Mustafa Wadi Nirwana Putri Nurfitri Kasran Nurhidayatullah Am Ondo Immanuel Samosir Orfinada Sultan Danilof Rafael Bonardy Gultom Renaldy Kyfen Kapoyos Rety Winonazada Revia Oktaviani Revia Oktaviani Roberto Firson Pappang Ruslan Patur Sakdillah S Sakdillah Sakdillah Setiawan Tandi Shalaho Dina Devi Shalaho Dina Devy Siti Asmasari Sri Wahyuni Tommy Aria Pradana Widya Indriani windhu Nugroho Yoga Achmad Rynaldy Yuana Saputra