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All Journal Indonesian Mining Journal Indonesian Mining Journal
Bagaraja Sirait
R&D Centre for Mineral and Coal Technology
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

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Journal : Indonesian Mining Journal

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EFFECT OF THE MOISTURE INCREASE IN THE TESTINGS OF DENSITY AND SATURATION DEGREE FOR MINE SOIL AT A CONSTANT SPECIFIC GRAVITY CONDITION Deden Agus Ahmid; Bagaraja Sirait; Yayah Rohayati; Tarsono Tarsono
Indonesian Mining Journal Vol 23 No 1 (2020): INDONESIAN MINING JOURNAL, Vol. 23 No. 1, April 2020
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol23.No1.2020.1010

Abstract

The degree of density and saturation in soil sample under constant specific gravity conditions are influenced by the addition of water content. To find out its effect, it is necessary to test the samples which include compaction, moisture content, specific gravity and density testing. By recognizing the soil properties through a testing and calculation; dry density, saturation density, dry soil volume, pore volume, degree of saturation, porosity, and void ratio can be evaluated. The test shows that the optimum moisture content and dry density are 53,25% and 1.08g/cm3 respectively. The tests were conducted to five samples that have a specific gravity of 2.67. The obtained saturation degree were S-01: 79.05%, S-02: 92.40%, S-03: 95.06%, S-04: 94.64% and S-05: 93.12%. The value of water content in the five samples was S-01: 48.87%, S-02: 51.04 %, S-03: 53.25 %, S-04: 55.32 %, S-05: 57.24%. The densities in five samples were S-01: 1.50 g/cm³, S-02: 1.63 g/cm³, S-03: 1.64 g/cm³, S-04: 1.62 g/cm³, S-0 5: 1.59 g/cm³. The saturation degree will increase along with the addition of the water content and the density. However, beyond the optimum addition of the moisture content, the saturation degree will decrease in line with the density even though if the water content increase. This occurred in the constant condition of the specific gravity.
GIS APPLICATION FOR MONITORING THE MINE AREAS Weningsulitri Weningsulitri; Retno Damayanti; Tri Widarti Masduki; Jeani Sulistyowati; Muhamad Lutfi; Bagaraja Sirait
Indonesian Mining Journal Vol 25 No 2 (2022): INDONESIAN MINING JOURNAL, Vol. 25 No. 2, October 2022
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol25.No2.2022.1283

Abstract

Technology development is growing fast, such as satellite imagery and GIS for various applications, one of them is mining technology. Several regulations for the mining sector regarding the mandatory use of satellite imagery have been stated in some regulations to be implemented in mining sectors. Some mine environmental studies showed that the remote sensing and the GIS analysis could detect the small changes in its environment area with effective cost as the coverage of the sensory images is quite broad. The purpose is to monitor land alteration by observing the changes at the taking place, in either the number of voids or their area, using the 2019 and 2020 SPOT 6/7 image data. The algorithm change detection analyzes the number and void changing, mainly to provide a visual description of the void image trend and other applications. The trend of void numbers and its area can be predictable and correlated with the coal mine activities yearly. The results of 2019 SPOT 6/7 image showed that the total area of coal mine pit increased from 2% of the total area of the IUP to 2.53% in 2020. But, its allegation of environmental changes due to the mining activities will be strengthened by a ground check survey that cannot be conducted now.
Co-Authors Deden Agus Ahmid Jeani Sulistyowati Muhamad Lutfi Retno Damayanti Tarsono Tarsono Tri Widarti Masduki Weningsulitri Weningsulitri Yayah Rohayati