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All Journal Indonesian Journal of Geography TEKNIK Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan YOUNGSTER PHYSICS JOURNAL Media Komunikasi Geografi IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan JURNAL KESEHATAN LINGKUNGAN (Journal of Environmental Health) Jurnal Wilayah dan Lingkungan Jurnal Tataloka Jurnal Geocelebes Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) PROMINE BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Geosains dan Teknologi Indonesian Journal on Geoscience Jurnal Geosains dan Remote Sensing (JGRS) Indonesian Journal on Geoscience Jurnal Litbang Kota Pekalongan Jurnal Profesi Insinyur Indonesia Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK) Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Thomas Triadi Putranto, Thomas Triadi
Departemen Teknik Geologi Fakultas Teknik Universitas Diponegoro Magister Ilmu Lingkungan, Sekolah Pascasarjana Universits Diponegoro
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics Public Health Social Sciences Transportation

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 1 
Analisis Level Kesiapan Warga Menghadapi Potensi Bencana Longsor Kota Semarang Susanto, Novie; Putranto, Thomas Triadi
TEKNIK Vol 37, No 2 (2016): (Desember 2016)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2601.18 KB) | DOI: 10.14710/teknik.v37i2.9815

Abstract

Semarang memiliki morfologi bervariasi yang berpotensi terhadap bencana tanah longsor. Daerah rawan longsor ini mengakibatkan kerugian yang tidak sedikit baik sisi ekonomi sosial seperti bangunan (vihara, talud, rumah dan sebagainya) maupun nyawa manusia. Dalam hal ini manusia banyak dirugikan meskipun aktivitas manusia juga terdeteksi sebagai salah satu penyebab utama terjadinya bencana longsor. Untuk mengurangi kerugian yang mungkin ditimbulkan oleh bencana longsor di Kota Semarang perlu diketahui status kesiapsiagaan warga sehingga prioritas sosialisasi dan intervensi dapat terarah dengan baik. Metode yang digunakan dalam penelitian ini adalah mengukur indeks kesiapsiagaan warga di 19 lokasi titik penelitian rawan bencana longsor. Hasil penelitian menunjukkan secara umum, kesiapsiagaan masyarakat Semarang masuk dalam kategori “Hampir Siap” dengan nilai indeks 55,74. Terdapat 2 lokasi yang memiliki indeks kesiapsiagaan “BelumSiap” yaitu Kembang Arum dan Manyaran. Daerah Mangunharjo berada dalam kategori indeks cukup siap. Ketiga daerah ini berada di daerah dengan tingkat kerawanan cukup tinggi sehingga diprioritaskan untuk mendapatkan sosialisasi dan intervensi yang diperlukan. [Title: Analysis of Citizens’ Preparedness Level toward Potency of Landslides Disaster in Semarang City] Semarang has different morphology and by doing so caused a high potential for landslides. This case resulted in the losses of the landslide-prone area both for the social economy such as buildings (temples, embankments, homes, etc.) and human lives. In this case, the man obtained many disadvantages although human activity is also detected as one of the main causes of the landslide. To reduce the losses, it is needed to know the status of citizens’ preparedness so that the priority of socialization and interventions can be targeted properly. The method used in this study is the measurement of the preparedness index of residents in 19 locations of landslides-prone areas. The results showed in general, the community preparedness Semarang in the category "Almost Ready" with an index value of 55.74. There are two locations that have an index of preparedness "Not Ready" namely Kembang Arum and Manyaran. Mangunharjo area is in the category of the index “Quite Ready”. Those areas are located in areas with fairly high degree of vulnerability. So they are prioritized for the socialization and the interventions.
Studi Kerentanan Air Tanah Terhadap Kontaminan Menggunakan Metode Drastic di Kota Pekalongan Putranto, Thomas Triadi; Widiarso, Dian Agus; Yuslihanu, Fatir
TEKNIK Vol 37, No 1 (2016): (Juli 2016)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.327 KB) | DOI: 10.14710/teknik.v37i1.9637

Abstract

Kota Pekalongan berada di Pulau Jawa bagian Utara. Jumlah penduduk kota pekalongan setiap tahunnya mengalami peningkatan. Tahun 2008 jumlah penduduk Kota Pekalongan sebanyak 271.990 jiwa kemudian menjadi 290.347 di Tahun 2012.. Untuk memenuhi kebutuhan air, peduduk Kota Pekalongan menggunakan sumur gali yang menyadap air dari akuifer bebas atau akuifer dangkal. Air tanah bebas sangat rentan terhadap pencemaran akibat pengaruh letaknya yang dangkal dan aktivitas manusia. Oleh sebab itu diperlukan suatu kajian mengenai kerentanan air tanah terhadap kontaminan. Analisis dilakukan denganmenggunakan metode DRASTIC. Metode ini merupakan metode pombobotan berdasarkan beberapa parameter, yaitu: kedalaman muka air tanah (D), jumlah area recharge (R), litologi akuifer (A), jenis media tanah (S), topografi (T), jenis media zona tak jenuh air (I), dan konduktivitas hidrolika (C). Berdasarkan hasil analisis DRASTIC, terdapat tiga tingkat kerentanan yaitu: daerah tingkat kerentanan sedang dengan nilai DRASTIC Indeks (DI) 101-140, daerah tingkat kerentanan tinggi dengan nilai DI 141-180, dan daerah tingkat kerentanan sangat tinggi dengan nilai DI >180.[An Assessment of Groundwater Vulnerability of Contaminant Using DRASTIC Method in Pekalongan City] Pekalongan city which located on the north of Java Island is growing fast, in particular in the population growth. In 2008, total population in Pekalongan city was 271.990 inhabitants increased then up to 290.347 inhabitants in 2012. To fill the water necessary, people in Pekalongan city are using dug wells which are abstracted groundwater from the unconfined aquifer or shallow aquifer. Shallow groundwater can be vulnerabe which are influenced by surface and human activities. Thus, it requires an assessment of the groundwater vulnerability and risk of contaminant. It was analyzed by DRASTIC method. The DRASTIC method is applied by using weighted of some parameters, i.e.: groundwater Depth (D), amount of Recharge (R), Aquifer type (A), Soil type (S), topography (T), Impact of unsatuated zone (I), and hydraulic Conductivity (C). DRASTIC Index (DI) results in three vulnerability levels which are medium with DI 101-140, high with DI around 141-180 and above 180 for high vulnerable of contaminant.
Analisis Kestabilan Lereng untuk Evaluasi Geometri Lereng Menggunakan Metode RMR, SMR, dan Morgenstern-Price pada Pit C2 dan C4 Tambang Timah Terbuka Blok Mayang PT Menara Cipta Mulia, Kabupaten Belitung Timur, Kepulauan Bangka Belitung Zulfa Nindya Salsabila; Thomas Triadi Putranto; Najib Najib
TEKNIK Vol. 44, No. 2 (2023): August 2023
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v44i2.57004

Abstract

Tin mining activities using an open pit mining system can affect slope stability and increase landslide risk. Slope stability analysis needs to be done to minimize the occurrence of landslides. This study aimed to determine engineering geological settings, and rock mass conditions, find slope safety factor values, as well as provide slope geometry recommendations according to the minimum Safety Factor (SF)  value criteria ≥1,25. The research area is an area with complex materials, so in this study slope stability analysis was carried out by combining rock mass classification methods through Rock Mass Rating (RMR) and Slope Mass Rating (SMR), and calculating the value of the Safety Factor (SF) using the Morgenstern-Price method with the Generalized Hoek-Brown and Mohr-Coulomb failure criteria. The analysis results obtained three geological engineering zones: meta sandstone- meta claystone, silty sandstone, and sandy claystone. The condition of the rock mass according to the RMR value, is in the moderate to good class. It has an SMR value of partially stable stability. Areas with the potential for landslides, namely STA 2 on sections B-B' with toppling type, STA 3 on sections C-C' and STA 4 on sections D-D'  with wedge type. According to the SF value, there are two unstable slopes during partially saturated conditions: sections A-A' and B-B'. The recommended slope geometry is with a minimum width of 2/3 of the height, where in partially saturated conditions, the slope has a single angle of  35 - 400, 5 m high, with an overall slope angle of 320 and 16 m high. In dry conditions, a single slope angle of 550, 6 m high with all slope angles of 370 and 15 m high.
Analisis Hidrogeokimia Dan Logam Berat Pada Air Tanah Menggunakan Metode WQI dan HPI Untuk Keperluan Higiene Sanitasi Kabupaten Belitung Timur Putri, Maya Aiko Salsabila; Putranto, Thomas Triadi; Santi, Narulita
TEKNIK Vol. 44, No. 3 (2023): December 2023
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v44i3.56996

Abstract

Kelapa Kampit is one of the tin-producing districts in East Belitung, which is composed of the Kelapa Kampit Formation. This mining activity affects water quality, which, of course, is also influenced by geological formations. This study aims to analyze the hydrogeochemistry and heavy metals in shallow groundwater in Kelapa Kampit District using water quality indexes in the form of water quality index and heavy metal pollution index methods. Hydrogeochemical test results showed a pH value of water 4 – 6.77 in the acidic category, a DHL value of 20 – 145 μS/cm, and a TDS value of 14 – 111 mg/L. From the visualization of chemical data, groundwater has various facies. The results of the Stiff Diagram show that water contains predominant calcium, magnesium, sulfate, and bicarbonate ions. The Gibbs diagram results show that the water has not been contaminated. The results of heavy metal testing also showed that the values of Fe2+, Mn2+, Pb2+, Zn2+, and Cu2+ were classified as low, and Al3+ was quite high. The results of water quality testing using the water quality index showed that the research area had excellent water quality, and the results of the heavy metal testing using the HPI method showed a low heavy metal contamination value. Based on hydrogeochemical and heavy metal analysis of shallow groundwater, Kelapa Kampit District has good groundwater quality for sanitation hygiene purposes.
Aplikasi Metode DRASTIC untuk Analisis Kerentanan Air Tanah terhadap Pencemaran di Kabupaten Tanah Laut, Kabupaten Banjar, dan Kota Banjarbaru, Provinsi Kalimantan Selatan Putranto, Thomas Triadi; Budihardjo, Mochamad Arief; Sarminingsih, Anik
TEKNIK Vol. 43, No. 1 (2022): May 2022
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v43i1.42660

Abstract

In 2017-2019, the Tanah Laut Regency, Banjar Regency, Banjarbaru City population was relatively high and continued to increase every year. The increase in the population reaches 1.39% to 2.92%. Along with population growth, the human need for clean water also increases, especially from groundwater. The study aims to assess the vulnerability of groundwater to contamination. The method used for the analysis of groundwater vulnerability to contamination is the DRASTIC method. It refers to seven parameters, namely groundwater depth (D), net recharge (R), aquifer media (A), soil layer (S), topography (T), impact to vadose zone (I) and hydraulic conductivity (C) by using geospatial analysis to calculate the DRASTIC Index/DI. From the results of geospatial analysis, there are three zones of groundwater vulnerability to contamination based on DI values, namely low vulnerability (95-106), medium vulnerability (106-146), and high vulnerability (146-186). The distribution of high zones dominates in the research area around of 75, 8%. The DRASTIC method requires a lot of data to provide an accurate analysis of groundwater vulnerability zone maps. This method has excellent accuracy and more effective in producing a map of the groundwater vulnerability zones to contamination.
Co-Authors Agus Harjanto Agus Harjanto Aisyah Nur Isneni Aji Bagas Putro Anggraeni, Wahyu Dini Anik Sarminingsih, Anik Annita Kusuma Wardhani Apoina Kartini Arizatur Reza Wicaksono Aska Zakiya Asri Cahaya Hati Axel Prima Agita Susanta Daniel Setiawan Dedi Hermawan Devina Trisnawati Dhana Hastuti Dina Rahayuning Pangestuti Dina Rahayuning Pangestuti, Dina Doni Prakasa Eka Putra Erlangga Erlangga Fadilah, Amar Jihad Fanny, Celsy Miftaqul Tiara Fatir Yuslihanu, Fatir Firza Syarifa Zahra Firza Syarifa Zahra Fuad Muhammad Fuad Muhammad Garindra Yogiswara Goji Pamungkas H Hadiyanto Hakkina, Delano Ichsan Hartanto, Fandika Virgiawan Haryono Setiyo Huboyo Hati, Asri Cahaya Heru Hendrayana Hidayatillah, Ahmad Syauqi I Made Adnyana Nala Imsak Aditya Respati Priyono Isti Karim Muhandini Jayawarsa, A.A. Ketut Kevin Alexander, Kevin Kresno Wikan Sadono M Rio Aulia Mahira Anaqah Huwaina Marin, Jenian Mochamad Arief Budihardjo Muhammad Iqbal Muhrozi Muhrozi Mustiono, Ady Rieo Wahyu Naintina Lisnawati Najib Najib Narulita Santi Nestri Martini Noorbasith Al Fajri Norma Afiati Novi Susanto Novie Susanto Nugraheni, Vania Salsabila Anabel Pranata, Mathias Andika Setya Putri, Maya Aiko Salsabila Rahmawati, Laily Agustina Reddy Setyawan Rinal Khaidar Ali Rinal Khaidar Ali Rino Dwi Hutama Rr. Tony Yulianto Santhi Widyastuti Santi, Narulita Sapto Purnomo Putro Sinatrya Diko Prayudi Sinatrya Diko Prayudi Sri Sangkawati Suharyanto Suharyanto Susanta, Axel Prima Agita Susanta, Axel Prima Agita T. Listyani R.A. Taat Setiawan Taat Setiawan, Taat Tabitha Abid Ardaneswari Tri Winarno Truman Simaremare Umar, Savikri Misbahul Wahju Krishna Hidajat Wahju Krisna Hidajat Wahju Krisna Hidayat Widiarso Dian Agus Widyanto David Yanuar Niko Priambodo Zulfa Nindya Salsabila