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All Journal Journal of Geoscience, Engineering, Environment, and Technology International Journal of Environmental, Sustainability, and Social Science
Sujiman Kusnadi
Faculty Of Engineering, University Kutai Kartanegara Tenggarong, East Kalimantan.
Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Physics Social Sciences

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Slope Stability Analysis Based on Type, Physical And Mechanical Properties Rock in Teluk Pandan District, East Kutai Regency, East Kalimantan Sujiman Kusnadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 2 No. 4 (2017): JGEET Vol 02 No 04 : December (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.002 KB) | DOI: 10.24273/jgeet.2017.2.4.879

Abstract

Research was located In Teluk Pandan District, East Kutai Regency, East Kalimantan Province. It’s aimed to determine the lithology in the research area and to find out how the amount of slope that will be a landslide at that location. The research conducted with the analysis of coring drilling results and then analyzed in the laboratory of rock mechanics to get the characteristic of physical and mechanical properties of the rocks. The data analysis using Hoek and Bray Method. The results showed that in the area study has a sedimentary rock lithology fine to medium detritus, such as claystone, siltstone and sandstone, as well as inserts are coal and shale. Based on the results of laboratory analysis of rock mechanics obtained density between 2,648 to 2,770. While the test results obtained value triaxial cohesion between (6.66 - 9:05) Kg / cm2, friction angle in between (37.19 - 44.08)o, cohesion residual (2.72 - 3.10) Kg / cm2, residual friction angle (27.22 - 32.44)o. While the direct shear test the cohesion of the summit between (6.66 - 9:05) Kg / cm2, friction angle in the cohesion peak (36.15 - 43.00)o, cohesion residual (2:22 to 3:10) Kg / cm2, friction angle in the cohesion residual (37.22 - 33.85)o. The simulation results stability of the slope stability Hoek and Bray using rockslide software, the result is that if the slope with a single slope stability, the stability of the slope is 60o, and if the slope with the stability of the slope overall stability of the slope is 48o.
Trends Of Elements Fe And Mn In Coal Mining Waste At Tenggarong District. Kutai Kartanegara East Kalimantan Sujiman SUJIMAN; Sundek HARIYADI
International Journal of Environmental, Sustainability, and Social Science Vol. 3 No. 2 (2022): International Journal of Environmental, Sustainability, and Social Science (Jul
Publisher : Indonesia Strategic Sustainability

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38142/ijesss.v3i2.229

Abstract

This study aims to determine the condition of Fe and Mn waste and to determine the tendency of Fe and Mn elements in several settling ponds of coal mines in Kutai Kartanegara Regency, East Kalimantan. The trend of Fe waste in mine 1, from January to March 2020 showed an increase, where in March it was very high up to 6,454 mg/lt. Then it decreased again to 0.899 mg/lt in May, then rose slightly again until September. In mine 2, the trend of Fe concentration from January to March 2020 showed an increase, where in March it was very high up to 62.30 mg/lt. The trend of the concentration of elemental Fe in mining for nine months is still below the quality standard set by the government. Meanwhile in Mine 4, the Fe concentration tends to be high in February 2020. Meanwhile, for other months, the concentration is quite good.
Characteristics of Open Coal Mine Wastewater Conditions in Tanah Bumbu District, South Kalimantan, Indonesia SUJIMAN, Sujiman
International Journal of Environmental, Sustainability, and Social Science Vol. 5 No. 3 (2024): International Journal of Environmental, Sustainability, and Social Science (May
Publisher : PT Keberlanjutan Strategis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38142/ijesss.v5i3.1051

Abstract

This research aims to determine the condition of waste in terms of the quality of the elements Fe, Mn, pH and TSS, and to determine the tendency of this waste in the settling pond of coal mines in Tanah Bumbu Regency, South Kalimantan.               The research results show that at the settling pond location of the open coal mine the concentration of Fe quality is between (0.023 – 6.50) mg/lt and Mn (0.02-2.14) mg/lt, and the TSS quality is 76 mg/lt to 801 mg/lt and the pH is between 6.40 to 8.10. Trends in Fe waste Most of the results are still below environmental quality standards, only in July 2022 the quality will increase to 6.5 mg/lt. Meanwhile, Mn waste for a year is still below the government's standard environmental quality standards, but the highest quality is in September 2024 reaching 3.35 mg/lt, this quality is still below environmental quality standards. The trend in pH quality in general is still normal, only in February 2024 the quality exceeds environmental quality standards, increasing to 8.10 mg/lt. Finally, for TSS quality, the trend is from January to August 2024 to decrease, then in September it increases significantly to 801 mg/lt and then gradually decreases until December 2024 to 182 mg/lt. Keywords : Environmental quality standards, Coal mine wastewater, trends quality.
Co-Authors Sundek HARIYADI