Soil (topsoil and overburden) above the granite quarry in pit 2 (two) PT. Karya Sumber Alam Perkasa has experienced a landslide. It is probably caused by the condition of pit 2 (two) slopes at PT. Karya Sumber Alam Perkasa, which is currently being mined, is quite steep. External factors that can trigger the movement of rock masses are vibrations due to breakers. This condition has the potential to increase the risk of slope stability. Slope stability is influenced by geological conditions, joints, slope geometry, water conditions below the soil surface, physical and mechanical properties, and vibrations due to blasting and mechanical equipment. Therefore, it is necessary to conduct a technical study of slope stability. The research aims to study rock mass class, potential type of landslide, and potential slope stability. The technical study of slope stability uses the Slope Mass Rating (SMR) method. Data processing using software Rocscience Dips 7.016. Analysis of potential types of landslides based on stereographic projections. The result of the RMR calculation is 78, so the rock mass class is number II, which is included in the excellent category. The results analysis of the potential for the type of failure indicates t tends to lead to the toppling failure, but after the study, there is no failure because it does not meet the landslide requirements. The result of the analysis of potential slope stability is that the slope in pit 2 (two) is safe or stable because the SMR value is 78 and the safety factor value is 2,458.
Diorite mining activities have the potential to cause environmental degradation. Therefore, there is a need for reclamation. Reclamation is part of environmental control in implementing Good Mining and Operational Practice. One of the stages in the implementation of reclamation is the arrangement of post-mining land. The soil arrangement system is divided into 3 (three) systems, namely the soil leveling system, the guludan system, and the pot system. Land management system based on top soil needs. Therefore, this research aims to analyze the land management system and determine the optimal topsoil stocking system. The method used in this research is a qualitative method of analysis. Data processing uses AutoCAD 2021 software and ArcGis 10.8 software. The cross-sectional method is used in data processing to determine the availability of topsoil and topsoil in the study area. The results obtained in this study are (1) The planned area of the reclamation area is ± 5.29 hectares; (2) The overburden stocking volume is 35,397.56 LCM; (3) The volume of distribution of topsoil using the land leveling method is 13,387.96 LCM.
Keripik keladi saat ini cukup digemari oleh para konsumen karena teksturnya kriuk dan rasanya gurih dan khas. Begitu pula dengan selai nenas digemari oleh konsumen karena memiliki teksturnya lembut dan rasa yang khas. Namun permasalahan utama adalah pemotongan keripik keladi dan pengupasan kulit nenas dilakukan secara manual. Hal ini tentu cukup memberatkan kelompok tani untuk memproduksi keripik keladi dan selai nenas dalam jumlah besar. Secara teknis tentu belum efisien dalam proses pembuatan keripik keladi dan selai nenas. Oleh sebab itu diperlukan mesin pemotong keripik keladi dan mesin pengupas kulit nenas. Tujuan kegitan ini adalah menyediakan mesin pemotong keripik keladi dan mesin pengupas kulit nenas. Metode yang digunakan dalam kegiatan ini adalah metode parsipatori dan kolaboratif dimana kelompok tani ikut berpartisipasi dalam kegiatan sosialisasi dan pelatihan, pengoperasian dan pemeliharaan mesin pemotong keripik keladi dan mesin pengupas kulit nenas. Selain itu akan dibuat SOP untuk mempermudah dalam pengoperasian dan pemeliharaan mesin. Produk dari kegiatan PKM adalah mesin pemotong keripik keladi dan mesin pengupas kulit nenas. Kunci utama keberhasilan pelaksanaan kegiatan PKM adalah komunikasi yang baik dan lancar antara tim PKM dengan mitra.
Soil (topsoil and overburden) above the granite quarry in pit 2 (two) PT. Karya Sumber Alam Perkasa has experienced a landslide. It is probably caused by the condition of pit 2 (two) slopes at PT. Karya Sumber Alam Perkasa, which is currently being mined, is quite steep. External factors that can trigger the movement of rock masses are vibrations due to breakers. This condition has the potential to increase the risk of slope stability. Slope stability is influenced by geological conditions, joints, slope geometry, water conditions below the soil surface, physical and mechanical properties, and vibrations due to blasting and mechanical equipment. Therefore, it is necessary to conduct a technical study of slope stability. The research aims to study rock mass class, potential type of landslide, and potential slope stability. The technical study of slope stability uses the Slope Mass Rating (SMR) method. Data processing using software Rocscience Dips 7.016. Analysis of potential types of landslides based on stereographic projections. The result of the RMR calculation is 78, so the rock mass class is number II, which is included in the excellent category. The results analysis of the potential for the type of failure indicates t tends to lead to the toppling failure, but after the study, there is no failure because it does not meet the landslide requirements. The result of the analysis of potential slope stability is that the slope in pit 2 (two) is safe or stable because the SMR value is 78 and the safety factor value is 2,458.
Open dumping activities at the Batu Layang TPA can potentially cause leachate pollution to the environment. Leachate that seeps into the ground can contaminate groundwater. Most people around the Batu Layang TPA use groundwater for MCK (bath, wash, toilet) purposes. If the groundwater is contaminated with leachate and used sustainably by the community, it will impact health problems. Therefore, it is necessary to manage the distribution of leachate. One of the leachate management systems is modeling the potential distribution of leachate below the soil surface. The purpose of this research is to analyze the distribution of subsurface leachate around the Batu Layang landfill area based on the resistivity value. They are modeling the potential distribution of leachate below the ground surface in this study using the Wenner configuration geoelectric method. Processing of geoelectrical measurement data using Res2DInv software so that the potential distribution of leachate under the soil surface is obtained in 2 Dimensional forms. The result of this research is the resistivity value <10 m is interpreted as leachate, with an error rate (RMS error) of 7.7–11.3%. The geology of the study area is composed of peat soil, where the constituent rocks have high porosity (83.43–92.92%) and increased permeability (2.97×10-5–8.31×10-5 m/s). Porosity and permeability affect the infiltration of leachate into the soil. The topography of the study area is relatively flat, so it is estimated that the velocity of leachate distribution horizontally and vertically under the soil surface is moderate. ABSTRAK Kegiatan open dumping di TPA Batu Layang dapat berpotensi menyebabkan pencemaran lindi ke lingkungan. Lindi yang merembes ke dalam tanah dapat mencemari air tanah. Sebagian besar masyarakat di sekitar TPA Batu Layang memanfaatkan air tanah untuk keperluan MCK (mandi, cuci, kakus). Jika air tanah tersebut tercemar lindi dan dimanfaatkan secara berkesinambungan oleh masyarakat maka akan berdampak pada gangguan kesehatan. Oleh karena itu, perlu adanya pengelolaan sebaran lindi. Satu di antara sistem pengelolaan lindi adalah pemodelan potensi sebaran lindi di bawah permukaan tanah. Tujuan penelitian adalah analisis sebaran lindi bawah permukaan tanah di sekitar kawasan TPA Batu Layang berdasarkan nilai resistivitas. Pemodelan potensi sebaran lindi di bawah permukaan tanah pada penelitian ini menggunakan metode geolistrik konfigurasi Wenner. Pengolahan data hasil pengukuran geolistrik menggunakan software Res2DInv sehinggga didapatkan potensi sebaran lindi di bawah permukaan tanah dalam bentuk 2 Dimensi. Hasil dari penelitian ini adalah nilai resistivitas <10 Ωm diinterpretasi sebagai lindi, dengan tingkat kesalahan (error RMS) sebesar 7,7–11,3%. Geologi daerah penelitian tersusun oleh tanah gambut, dimana batuan penyusunnya memiliki porositas tinggi (83,43–92,92%) dan permeabilitas tinggi (2,97×10-5–8,31×10-5 m/s). Porositas dan permeabilitas mempengaruhi daya infiltrasi lindi ke dalam tanah. Topografi daerah penelitian relatif datar sehingga diperkirakan kecepatan sebaran lindi secara horizontal maupun vertikal di bawah permukaan tanah sedang.
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