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All Journal Journal of Degraded and Mining Lands Management JURNAL ILMU BUDAYA Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat
Ilham Alimuddin, Ilham
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Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Public Health

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Journal : Journal of Degraded and Mining Lands Management

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A new approach to determining the slip surface in tuff to determine the volume of landslide material: A case study on the West Sinjai road section, Sinjai Regency, South Sulawesi, Indonesia Busthan, Busthan; Pachri, Hendra; Alimuddin, Ilham; Bahri, Syamsul; Bundang, Syarifullah
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5533

Abstract

Analysis of landslide slip surface based on the engineering properties of tuff rocks, including shear strength, water content, and infiltration rate on the West Sinjai road section, South Sulawesi, Indonesia. This study aimed to analyze the effect of shear strength, water content infiltration rate, and weathering grade of tufa rocks in the study area. The methods used in this study area included a study of weathered tuff profile characteristics, weathered tuff infiltration testing and residual soil (RS) determination of weathered tuff water content and residual soil, and testing of shear strength of weathered tuff and residual soil. This research used aspects of engineering geology, including shear strength, water content, and infiltration rate, as well as rock weathering grade to determine the slip surface in tuff to determine the volume of landslide material. The results showed that the tuff profile consisted of four grades, namely moderately weathered tuff (MW), highly weathered tuff (HW), completely weathered tuff (CW), and soil residual (RS). The rate of tuff infiltration increases with increasing weathering grade. The water content is more significant with the high degree of weathering of tuff. At the same time, the shear strength decreases with high weathering. Therefore, the research area is prone to landslide events. The slip surface is in a layer of moderately weathered tuff rock (MW), and those that experience landslides are highly weathered tuff rock (HW), completely weathered (CW), and residual soil (RS).
Economic value and environmental impact of Saddang River sand mining, Pinrang Regency, South Sulawesi, Indonesia Arsyad, Arsyad; Rukmana, Didi; Salman, Darmawan; Alimuddin, Ilham; Arifin, Muh. Aris; Jamaluddin, Jamaluddin; Hamzah, Hamzah; Nurdirman, Eris; Ihsan, Muh.; Bauna, Ruslan; Reno, Reno; Tinta, Yulis
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5495

Abstract

This research aimed to determine the social, economic, and environmental impact of Saddang River sand mining on local communities and the Pinrang district government. Primary data collection used field surveys to obtain supporting data on economic aspects consisting of production capacity, costs, selling price of sand at the miner level and market price at the consumer level, number of grains, and various other economic values such as indirect value and indirect use value. The primary data collection method uses a total sampling of 80 miners operating in the research area. Consumer data uses a field survey method with 8 hours of observation per day. Saddang River sand mining provides great socio-economic value and environmental impact, directly or indirectly. This significant socio-economic value and impact, if not accompanied by good management, can result in over-exploitation, which impacts the physical and ecological damage of the Saddang River. On the other hand, the high rate of sedimentation from upstream of the Saddang River results in shallowing, so sand mining activities help normalize the Saddang River. Therefore, to continue providing economic benefits and the Saddang River to avoid physical and ecological damage due to mining activities, sustainable management of Saddang River sand mining is needed.
Co-Authors ., Maulana ., Sahabuddin Adi Maulana, Adi Arifin, Muh. Aris Arsyad Arsyad Asfar, Suryawan Bauna, Ruslan Busthan, Busthan Darmawan Salman Didi Rukmana, Didi Haerany Sirajuddin Hamid Umar Hamzah Hamzah Ikhwana, Nur Ilyas, Imran Jamaluddin Jamaluddin Meinarni Thamrin Meutia Farida Muh. Ihsan Muhammad Nur Nurdirman, Eris Pachri, Hendra Reno, Reno Syamsul Bahri Syarifullah Bundang Tahir Muda, Khadijah Tinta, Yulis Ulva Ria Irvan