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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.
Analisis Korelasi Hasil Pengujian Unconfined Compressive Strength (UCS) & Point Load Index (PLI) Batuan pada Formasi Kampungbaru, Kabupaten Kutai Kartanegara Akbar Nazaruddin; Albertus Juvensius Pontus; Agus Winarno; Tommy Trides; Lucia Litha Respati
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 2 (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.v4i2.1356

Abstract

Slope stability studies are crucial in determining the sustainability and operational safety of mining activities. This research was conducted to analyze the correlation between rock porosity and Unconfined Compressive Strength (UCS) results, as well as the corrleations between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS) results. These two correlations form the primary components of the study. Three types of rock were tested claystone, coal, and siltstone. The results of the study are as follows for the correlation between porosity and Unconfoned Compressive Strength (UCS), claystone yielded a coefficient of determination (R2) of 0.32 is classified as weak correlation, with the linear regression equation Y=-0.11X+6.98. Coal yielded an (R2) of 0.56 is classified a moderate correlation, with the equation Y=-1.98X+103.77. Siltstone yielded an (R2) of 0.86 is classified a strong correlation, with the equation Y=-0.38X+20.02. Regarding the correlation between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS), claystone achieved an (R2) of 0.12 is classified a very weak correlation, with the linear regression equation Y=8.91X. Coal achieved an (R2) of -0.27 is classified a very weak correlation, with the equation Y=27.87X. Lastly, siltstone achieved an (R2) of -0.45 is classified a very weak correlation, with the linear regression equation Y=24,90X.
Analisis Pengaruh Penggunaan Air Deck Terhadap Ground Vibration pada Aktivitas Peledakan di Pit Sentuk PT Multi Harapan Utama Provinsi Kalimantan Timur Dimas Daffa Erlangga; Revia Oktaviani; Lucia Litha Respati; Tommy Trides; Windhu Nugroho
Jurnal Kendali Teknik dan Sains Vol. 3 No. 1 (2025): Januari: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v3i1.4665

Abstract

Blasting is an activity that breaks rocks from their parent rock using explosives to create smaller fragments, making the loading and transportation processes easier. One of the environmental impacts of blasting activities is ground vibration. Ground vibration is one of the outcomes of blasting activities, and it is measured using the PPV (Peak Particle Velocity) value. Ground vibration can become a problem for companies if it exceeds the safe vibration quality standard (SNI 7571: 2010), as it can pose a danger to humans and nearby buildings. The Air Deck is an air column in the blast hole that aims to reduce energy vertically, this method can reduce the use of explosives. This research was conducted at the Sentuk Pit of PT. Multi Harapan Utama in East Kalimantan. Observations were made during 42 blast events to determine the impact of the air deck method on the resulting vibration. During the study, the maximum PPV value was 13.87 mm/s, while the minimum PPV value was 1.13 mm/s. The average ground vibration measurement value for non-air deck blasting was 4.40 mm/s, while the average ground vibration measurement value for air deck blasting was 3.95 mm/s. The use of this method also reduced the powder factor value. For non-air deck blasting, the average powder factor value was 0.26 kg/m³, and for air deck blasting, the powder factor value was 0.20 kg/m³, resulting in a 23.08% reduction in explosive usage. To calculate the predicted PPV, scaled distance calculations were used. Based on the predicted PPV calculation results, the deviation from the actual PPV was 1.59 mm/s.
Monitoring Pergerakan Lereng Disposal dengan Total Station di Pit PT Fajar Sakti Prima, Kalimantan Timur Elsa Amanda Putri; Tommy Trides; Shalaho Dina Devy; Revia Oktaviani; Albertus Juvensius Pontus
Jurnal Kendali Teknik dan Sains Vol. 3 No. 2 (2025): April: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v3i2.4863

Abstract

Slope failure can occur even though slope design and reinforcement have been carried out. However, before it completely collapses, there are often signs from the slope. These signs should be carefully observed through slope monitoring or surveillance activities to provide advance warnings regarding the development of slope instability, allowing mitigation measures to be implemented to reduce or avoid the impacts of instability, as well as to predict the timing of landslides using Inverse Velocity. This study was conducted at the PIT of PT Fajar Sakti Prima in East Kalimantan Province. Observations were carried out over 39 days to obtain deformation behavior, velocity values for mitigation actions, and inverse velocity values to predict the timing of landslides. In this observation, the deformation behavior values at PM 01, PM 02, and PM 03 were initially linear, then exhibited progressive behavior on November 7-8, 2024. The predicted landslide timing from this observation was November 20-21, 2024. Based on velocity values correlated with the TARP, critical categories were obtained at 7.40 - 9.86 cm/day and very critical at >26.17 cm/day
Analisis Kinerja Alat Bor dalam Penyediaan Lubang Ledak untuk Mencapai Target Produksi Pembongkaran Overburden di Pit.7 PT. Insani Bara Perkasa Kabupaten Kutai Kertanegara Provinsi Kalimantan Timur Muh. Iskandar Rahman; Revia Oktaviani; Agus Winarno; Tommy Trides; Albertus Juvensius Pontus
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: 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.v4i2.1373

Abstract

Blast hole drilling is an initial stage that plays a critical role in determining the success of blasting activities in mining and construction operations. Drilling quality directly affects rock fragmentation, drilling equipment efficiency, drilling equipment productivity, as well as blasting safety and costs. This study aims to analyze the influence of drilling parameters on blast hole quality, including hole diameter, drilling depth, hole inclination, and the suitability of drilling patterns with respect to the planned blasting design. The research methodology involves field observations, actual measurements of drill holes, and analysis of data obtained from drilling and blasting productivity. The results show that deviations in hole depth and direction can lead to irregular distribution of blasting energy, resulting in suboptimal rock fragmentation and an increased potential for flyrock and overbreak. In addition, the selection of appropriate drilling methods and equipment based on rock mass characteristics has been proven to improve productivity and blast hole quality. Therefore, controlling drilling parameters and implementing proper operational procedures are essential to enhance the overall effectiveness and productivity of blasting activities. This study is expected to serve as a reference for the planning and evaluation of blast hole drilling activities to achieve more efficient, safe, and economical operations.
Studi Klasifikasi Tanah Metode USCS dan Pengaruh Kedalaman terhadap Karakteristik Tanah pada Lereng Lowwall Pit North PT Karya Putra Borneo Ahmad Akmal Muhyiddin; Tommy Trides; Shalaho Dina Devi; Revia Oktaviani; Albertus Juvensius Pontus
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: 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.v4i2.1374

Abstract

This study aims to determine the soil classification of rock disintegration products based on the Unified Soil Classification System (USCS) and analyze its relation to sample depth variations on the lowwall slope of Pit North, PT Karya Putra Borneo, Kutai Kartanegara Regency, East Kalimantan. Soil samples were obtained through the Slake Durability test, simulating rock weathering from wetting and drying cycles, producing fine particles classified as weathered soil. These samples were analyzed for physical properties using Atterberg Limits tests and Grain Size Analysis. Observation point coordinates were X 508523.011 m, Y 9922791.186 m, at an elevation of 87.548 m. Drilling indicated soil material at 0–1.5 m depth; claystone with coal fragments at 2.97–4.44 m; siltstone with coal fragments at 4.44–10.55 m; and claystone at 12.05–29.36 m. USCS classification showed the materials were dominated by fine-grained soils: clay (CL) and silt (ML), with minor silty sand (SM). Correlation with borehole depth revealed no significant changes in soil classification, indicating that depth variations primarily affect soil physical properties rather than its classification type.  
Pengaruh Evaluasi Grade Serta Jari Jari Tikungan dan Superelevasi Terhadap Produktivitas Alat Angkut Overburden pada Pit Pinang PT Bukit Baiduri Tito Arie Ananta Mahendra; Agus Winarno; Rety Winonazada; Harjuni Hasan; Tommy Trides
Jurnal Sains dan Teknologi Vol. 5 No. 1 (2026): Juni : Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/saintek.v5i1.1067

Abstract

PT. Bukit Baiduri Energi (BBE) is a coal mining company that utilizes hauling roads as the main infrastructure for material transportation. This study focuses on a 1.7 km road segment selected as the object of technical evaluation. The objective of this research is to analyze the effect of road geometry improvements on hauling time efficiency and equipment productivity. The method employed includes direct field measurements and calculations of operational parameters such as travel time, cycle time, and productivity. The results indicate that improvements in road grade reduced travel time from 10.13 minutes to 9.86 minutes. This reduction was followed by a decrease in cycle time from 16.29 minutes to 16.22 minutes. In addition, productivity increased from 65.4 bcm/hour to 66.69 bcm/hour. Also, improvements in curve radius and superelevation were implemented on the hauling road. These improvements resulted in a further decrease in travel time from 9.86 minutes to 8.6 minutes. Consequently, the cycle time also decreased from 16.22 minutes to 16.18 minutes. The productivity of hauling equipment increased from 66.69 bcm/hour to 67.02 bcm/hour. Overall, the evaluation of road geometry provided a positive contribution to operational performance. The productivity of overburden removal increased from 65.4 bcm/hour to 67.02 bcm/hour, representing an improvement of 2.48%.