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ANALISA KETERDAPATAN AKUIFER AIR BAWAH TANAH DENGAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DESA TUNTUNGAN II DUSUN I Panjaitan, Natalius; Tambun, Bungaran; halawa, analiser
Jurnal Sains dan Teknologi ISTP Vol. 20 No. 02 (2024): JANUARI
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v20i02.327

Abstract

Clean water is still a problem in the city of Medan and Deli Serdang Regency according to the North Sumatra Provincial government in the Medan area and its surroundings, the total need for clean water is 11,000 liters/second and an additional water supply of 4,000 liters/second is needed with water availability of 200 liters/second. So that the water supply in the Medan city area and its surroundings still lacks a water supply of 3,800 liters/second article sumutprov.go.id (https://sumutprov.go.id/artikel/artikel/resmikan-programmaster-meter-di-medan--gubernur--edy-rahmayadi-targetkan-tuntaskan--kebutuhan-air-bersih-di-akhir-periode) Besides that, in Tuntungan II Village, Hamlet I, Pancur Batu District, Deli Serdang Regency, there is no water channel from government institutions (PDAM) so that the community's water source in this area is obtained from water from wells/dug wells. this makes this research carried out. to interpret the presence of groundwater which can be used as a source of clean water in the research area conducted in Desa Tuntungan II , Dusun I, Kecamatan Medan Tuntungan, Kota Medan, North Sumatra Province. From the results of data processing, then interpretation of the data is carried out. Data interpretation is done by comparing the RMS table with the rules of the resistivity table of Suyono (1978), Astier (1971) and the geological map of the study area to determine the type of rock. The stratigraphy of the research location according to the resistivity value is thought to consist of 5 lithologies, namely Overburden (24.9-32.4Ω), andesite (1428-1473 Ω), clay (6.45-14.2Ω), andesite breccia (148-170 Ω), tuff (37.6 -74.6 Ω). The existence of a water-carrying layer (aquifer) at the point of measurement Point I is at a depth of around 14.8 – 76.1 meters. The predicted layer thickness is 61.2 m. The lithology of this layer is tuff as a water-carrying layer (aquifer). The existence of a water-carrying layer (aquifer) at Point II is at a depth of around 11.1 – 91.3 meters. The thickness of the layer is 80.2 meters. The lithology of this layer is a strong tuff as a water-carrying layer (aquifer).
ESTIMASI SUMBERDAYA PASIR BATU DENGAN METODE CROSS SECTION PADA DESA BIRU-BIRU KABUPATEN DELI SERDANG Simanjuntak, Jefri; Halawa, Analiser; Lismawaty
Jurnal Sains dan Teknologi ISTP Vol. 20 No. 02 (2024): JANUARI
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v20i02.330

Abstract

Deli Serdang Regency is a Regency in North Sumatra Province which has natural resource potential in the form of non-metallic minerals and rocks. Stone sand (sirtu) comes from two parts, the large sized volcanic rock material and the fine sized consisting of clay and sand. Based on PP 96 of 2021, stone sand is included in the rock class. This research was conducted to determine resource estimates using the cross section method and the characteristics of rock sand in the research area. Data collection was carried out following the SNI 4726:2011 exploration concept, exploration stages include: review survey, inspection and general exploration of the surface of the mapping area. Based on the mapping results, the distribution of rock sand is not square (random), so using the trapezoidal method to assist in calculating the volume of rock sand in the calculation, we get an estimate of rock sand resources with an indicated resource classification, namely 641,812.5 m3 and the characteristics of rock sand with rock fragments which are thought to come from the mentar unit ( QTvm) and sand originating from the Keutapang (Tuk) formation. The sand-to-stone ratio in the southwestern deposition area is dominated by ±70% sand and ±30% stone, while in the northeastern deposition area it is dominated by ±80% rock and ±20% sand. The suggestion that the author can convey is the need to carry out subsurface mapping to determine the distribution and thickness of rock sand below the surface.
ANALISIS K3 BERDASARKAN JSA PADA PENGELASAN TANGKI MINYAK PERTAMINA DI SP OGAN FIELD EP ASSET 2 Putra, Toni Satria; Halawa, Analiser; Tambun, Bungaran
Jurnal Sains dan Teknologi ISTP Vol. 20 No. 01 (2023): Desember
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v20i01.362

Abstract

The purpose of this study is to know the application of occupational safety health (K3), to know the Job Safety Analysis (JSA) as an effort to prevent accidents due to welding work at the bottom of the oil collection tank. application of the Risk Control Hierarchy According to Iso 45001 in the process of welding the bottom of the oil collection tank. In this study, the survey method was used. Then analyzed descriptively aims to describe the nature of a situation. The results of the research on welding the bottom of the pertamina oil collection tank at SP OGAN FIELD EP ASSET 2 have been implemented as written in the Standard Operating Procedure (SOP). The application of Job Safety Analysis (JSA) in the tank bottom welding process has been applied by workers by wearing Personal Protective Equipment (PPE). Welding work on the bottom of the oil collection tank has been carried out based on the Risk Control Hierarchy according to Iso 45001, namely, providing training to workers, conducting regular equipment inspections, wearing personal protective equipment and minimizing and even eliminating hazards that can occur when welding work is done.
PENYEBARAN KECEPATAN AIR PADA DIAMETER PIPA DN 250, DN 200 DAN DN 150 naibaho, bonar sari monang; Halawa, Analiser
Jurnal Sains dan Teknologi ISTP Vol. 21 No. 01 (2024): JULI
Publisher : LPPM ISTP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59637/jsti.v21i01.412

Abstract

Utilization of water is very necessary for household needs. These needs are distributed through pipe as media. The volume of water flowed depends on the amount needed. So proper distribution is needed. In the mining industry, water distribution is also needed. Especially in PIT. Distribution is aligned with the capacity (Sump) with rainfall and groundwater entering the mine. The choice of pipe also influences the amount of water distribution. Especially with the difference in height in the suction pipe and exhaust pipe. The author conducted research on 3 (three) pipe diameter sizes DN 250, DN 200 and DN 150. By observing these three types of sizes, the phenomenon of flow velocity in the pipe was obtained. The phenomenon that occurs is that the smaller the pipe size, the higher the speed of water flow in the pipe. Observations were also made in an area 0.006 m from the inner pipe. In this area, a balance of flow velocity is obtained in pipes with sizes DN 200 and DN 150. So that a speed selection of 0.48 m/s is obtained which corresponds to the DN 200 pipe.
SURVEY LOKASI AIR BERSIH DENGAN MENGGUNAKAN GEOLISTRIK TAHANAN JENIS UNTUK MEMENUHI KEBUTUHAN KELOMPOK MASYARAKAT DI DESA SUKA MAKMUR, KEC. KUTALIMBARU, KABUPATEN DELI SERDANG Halawa, Analiser; Naibaho, Bonar; Maivera, Ruth; Siregar, Mona Hatorangan; Sinaga, Joslen
PKM Maju UDA Vol 5 No 3 (2024): OKTOBER
Publisher : Lembaga Penelitian dan Pengabdian Pada Masyarakat (LPPM) Universitas Darma Agung (UDA) Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/pkmmajuuda.v5i3.5502

Abstract

Air merupakan salah satu sumber daya alam yang memiliki fungsi penting bagi kehidupan, terutama manusia. Bagi manusia, air digunakan untuk memenuhi kebutuhan sehari-hari. Di latarbelakangi kebutuhan beberapa (masyarakat) akan airbersih di Desa Suka Makmur, Kecamatan Kutalimbaru, Kabupaten Deli Serdang, Provinsi Sumatera Utara, yang dimana masyarakat harus berjalan ±3 Km survey akuifer bawah permukaan untuk mengetahui potensi air tanah di daerah tersebut. Penyelesaian Permasalahan di atas pada awalnya dilakukan survey geologi, geomorfologi topografi, struktur, satuan batuan dan aliran sungai. Disamping itu dilakukan pengumpulan informasi dari penduduk setempat yang sudah memiliki air bor. Sehingga diketahui kedalaman air tanah bebas yang saat ini masyarakat gunakan. Dari hasil pengukuran geofisika, dengan metode Geolistrik Tahan jenis di lapangan, Setelah di olah diolah dan dikombinasikan dengan peta geologi setempat, maka dapat disimpulkan beberapa hal, antara lain : Susunan litologi pada titik pengukuran Lintasan I dan Lintasan II terdiri dari 4 (empat) litologi yaitu : Pasir tufaan, Pasir dan Kerikil kering, Pasir tufaan dan Tanah lanauan-Pasiran. Keberadaan lapisan pembawa air (aquifer) pada titik pengukuran I diduga berada mulai pada kedalaman 64.7 meter. Ketebalan lapisan ini sekitar 58.7 m. Dan keberadaan lapisan pembawa air (aquifer) pada titik Pengukuran II diduga berada pada kedalaman 24.6 meter. Ketebalan lapisan ini sebesar 23,3. Pada titik pengukuran I dan II litologi lapisan tersebut diperkirakan sebagai pasir tufaan yang diduga kuat sebagai lapisan pembawa air (aquifer); Nilai tahanan jenis terdiri dari 4 lapisan litologi yaitu Pasir tuffaan (480-571 Ω), pasir dan kerikil kering (1627-3863 Ω), pasir tuffan (187-490 Ω), tanah lanauan pasiran (15.7-47.5 Ω).
Evaluasi Keselamatan dan Kesehatan Kerja pada Proyek Dinding Penahan Tanah di Daerah Rawan Longsor Jalan Medan - Brastagi Desa Sembahe Kabupaten Deli Serdang Jumari, Jumari; Endayanti, Masriani; Sinaga, Joslen; Siburian, Jhonson Monang; Halawa, Analiser
All Fields of Science Journal Liaison Academia and Sosiety Vol 5, No 2: Juni 2025
Publisher : Lembaga Komunikasi dan Informasi Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58939/afosj-las.v5i2.1137

Abstract

Desa Sembahe Kecamatan Sibolangit Kabupaten Deli Serdang dengan topografi berlereng, rentan terhadap longsor. Alternatif desain yang dilakukan adalah dengan menggunakan perkuatan dinding penahan tanah. Berdasarkan hasil penelitian yang telah dilakukan oleh penulis dengan cara menyebar kuesioner kepada 25 responden pada proyek konstruksi dinding penahan tanah di Desa Sembahe Kecamatan Siboangit Kabupaten Deli Serdang, diperoleh kesimpulan sebagai berikut : 1). Berdasarkan hasil analisis terhadap program keselamatan dan kesehatan kerja (K3) di proyek didapatkan hasil bahwa pelaksanaan K3 mengutamakan keselamatan masyarakat yang berada di luar proyek dengan cara pemasangan sign board keselamatan kerja, pemasangan rambu atau informasi mengenai proyek, pagar proyek atau larangan mendekati proyek, dan jalur penyelamatan untuk para pekerja didalam proyek, 2). Untuk keselamatan kerja para pekerja yang berada di dalam proyek dilengkapi dengan peralatan proyek sesuai dengan standar di proyek dan mengecilkan resiko terjadinya kecelakaan dalam bekerja. 3). Berdasarkan hasil analisis terhadap kendala dalam menerapkan keselamatan dan kesehatan kerja (K3) di proyek didapatkan hasil bahwa kendala selama ini dalam menerapkan keselamatan dan kesehatan kerja (K3) terjadi karena hambatan dari sisi pekerja. Hal ini terjadi karena para pekerja lebih meengutamakan tuntutan kebutuhan dasar atau pokok, tidak mengetahui jaminan maupun pentingnya keselamatan dan kesehatan kerja (K3) pada proyek kontruksi.
Coulomb Stress Changes in the 2004 Aceh Earthquake on the Mount Sibualbuali and Mount Lubukraya Sinaga, Goldberd Harmuda Duva; Halawa, Analiser; Prasetyo, Retno Agung; Silaban, Irving Josafat Alexander; Sinaga, Mardame Pangihutan
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 10 No 2 (2024): July - December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v10i2.7110

Abstract

The great Aceh earthquake on December 26, 2004, had a magnitude of 9.2 Mw for 10 minutes with coordinates 3,316°N 95,854°E. had a tremendous impact on changes in geological conditions and disasters in Aceh and Asia, especially Southeast Asia and South Asia. Changes in geological conditions have resulted in Aceh and its surroundings becoming more prone to earthquakes, including volcanoes in North Sumatra. This research aims to determine the value of changes in coulomb stress that occur on Mount Sibualbuali and Lubukraya. This research uses the coulomb stress method presented in Coulomb 3.4 software. This research produces positive coulomb stress changes in 2021 which are marked by the red lobe, namely 0.197 bar on Mount Sibualbuali and 0.187 bar on Lubukraya. The highest increase in chwerees in coulomb stress was in 2015, namely 0.319 bar in Sibualbuali and 0.262 bar in Lubukraya. This research also resulted in the highest coulomb stress changes at a depth of 90-100 km so that it does not affect the volcanic activity of the two mountains.
Co-Authors Endayanti, Masriani Goldbert Harmuda Duva Sinaga Irving Josafat Alexander Jumari Jumari, Jumari Lismawaty Maivera, Ruth Naibaho, Bonar naibaho, bonar sari monang Panjaitan, Natalius Prasetyo, Retno Agung Putra, Toni Satria Siburian, Jhonson Monang Simanjuntak, Jefri Sinaga, Joslen Sinaga, Mardame Pangihutan Siregar, Mona Hatorangan Tambun, Bungaran