Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

2.543

P-Index

This Author published in this journals

All Journal Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Jurnal Geosaintek Jurnal Ilmiah Dinamika Rekayasa (DINAREK) Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Buletin Sumber Daya Geologi Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Geominerba Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology BACA: Jurnal Dokumentasi dan Informasi Jurnal Geosaintek

Zufialdi Zakaria

Fakultas Teknik Geologi, Universitas Padjadjaran

Author-ID : 525619

Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Physics Public Health Social Sciences Other

Published : 70 Documents Claim Missing Document

Claim Missing Document

Articles

3 4 5 6 7

GEOTECHNICS STUDY FOR DESIGN OF OPEN PIT SLOPES AT COAL MINING SITE PLAN, SAROLANGUN, JAMBI -, Geni Dipatunggoro; -, Zufialdi Zakaria; -, Irvan Sophian
Bulletin of Scientific Contribution Vol 9, No 2 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Site plan of coal mining at Sorolangun, Jambi, is required geotechnical study for cut slope design. Mining plan. In open pit plan, to take stable slope, is required slope mass rating (SMR). SMR method is requiring rock mass rating value. According to soil and weak-rock mass properties of Muaraenim Formation, stable

POTENSI MENGEMBANG TANAH LEMPUNG DI WILAYAH KAMPUNG CIGINTUNG, DESA CIMUNCANG, KECAMATAN MALAUSMA, KABUPATEN MAJALENGKA, PROVINSI JAWA BARAT Retnoningtyas, Widya Ika; Zakaria, Zufialdi; Sukiyah, Emi
Bulletin of Scientific Contribution Vol 15, No 2 (2017): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

ABSTRAKDaerah penelitian di wilayah Majalengka, Provinsi Jawa Barat tersusun oleh batuan hasil endapan gunungapi tua (Qtvs), dan Formasi Kaliwangu (Tpkw). Hasil pelapukan batuan tersebut berupa tanah lempung dengan potensi mengembang. Tujuan dari penelitian ini adalah untuk mengetahui tingkat mengembang, dan bahaya yang ditimbulkan dari tanah lempung yang ada diwilayah penelitian berkaitan dengan gerakan tanah yang sering terjadi di wilayah ini. Tingkat potensi mengembang tanah lempung ini dapat dianalisis menggunakan data mekanika tanah, yaitu indek plastisitas dan persen lempung. Data mekanika tanah tersebut digunakan untuk menghitung nilai aktifitas dari lempung. Berdasarkan klasifikasi skempton nilai aktiftitas lempung yang didapat adalah 0,62 sampai 1,35. Jenis mineral lempung Illite dan Monmorilonite (Ca), dan tingkat potensi mengembang tinggi sampai sangat tinggi. Sedangkan berdasarkan klasifikasi Bowles dan Seed menunjukkan nilai aktifitas sebesar 0,79 sampai 1,80, dengan jenis mineral lempung Illite dan Monmorilonite, dan potensi mengembang tanah lempung ini adalah tinggi sampai sangat tinggi. Kata kunci: Potensi mengembang, lempung, nilai aktiftitas, indek plastisitas, persen lempung. ABSTRACTThe research area in Majalengka, West Java consist are older volcanic (Qvts) and Formation Kaliwangu (Tpkw). Result weathering of the rock is clay with potential to swelling. The purpose of this study is to determine the rate of swelling and the hazard potential at the area posed from clay. Swelling potential of this clay soil analyzed using by soil mechanical data with the index of plasticity and percentage of clay. The soil mechanical data used to calculate the activity value of clay. Based on skempton analysis results of analysis is 0.62 to 1.35, with Illite and Monmorilonite (Ca) clay minerals and swelling clay potential high up to very high. Based on the Bowles and seed classification showing activity values of 0.79 to 1.80, with the type of clay minerals Illite and Montmorillonite and swelling clay potential is high to very high. Keywords: Potential of Swelling, clay, value of activity, plastisity indeks, percent of clays.

ANALISIS GEOMEKANIKA FORMASI HALANG DI DAERAH STRUKTUR GEOLOGI SEKITAR SUNGAI CITAAL, KUNINGAN, JAWA BARAT -, Zufialdi Zakaria
Bulletin of Scientific Contribution Vol 4, No 1 (2006): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Lithology at research area consist of sandstone, claystone and brecia which include to Halang Formation. Structure of geology is sinistral strike-slip fault with relative strike to southwest - northeast. Geomechanic analysis given a number of Rock Mass Rating and Slope Mass rating as follows: Rock mass rating is 55 to 66. RMR to foundation is 48 to 50. Description of class number is 3 (III), its mean fair rock.Slope mass rating given number of slope angle which is suggested to stable slope, as follows: According to Laubscher (1975) SMR is 55o. According to Hall (1985) SMR is 56.20o to 63.35o. According to Orr (1992) SMR is 64.49o to 71.71o . Environmental management is preventive effort of impact which attend with foundation design according to allowable bearing capacity and / or choice the architecture of building to safety. Monitoring can be conducted to condition of building (house, bridge, drainage etc.)

BIO-ENGINEERING, MELALUI PEMANFAATAN TANAMAN KALIANDRA (CALIANDRA CALOTHYRSUS) DI WILAYAH ZONA RAWAN LONGSOR JAWA BARAT -, Zufialdi Zakaria; -, Dicky Muslim; -, Raden Irvan Sophian; -, Sondi Kuswaryan; -, Ujang Hidayat Tanuwiria
Bulletin of Scientific Contribution Vol 11, No 3 (2013): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Landslides prone areas can be occur due to a large slope, open slopes, large erosion rate, or a large infiltration. Landslide prone areas can be prevented by a stable slope engineering. Engineering of stable slopes can be integrated through a variety of methods with preliminary procedure : 1) Mapping of landslides prone areas, 2) Slope stability analysis through the study of Safety Factor, 3) Engineering of slope stabilization and integrated through the simulation stable slope, slope design and other engineering, 4) Environmental management and environmental monitoring, 5) Bio-engineering by utilizing plants as part of a stable slope engineering systems, namely as a preventive agent of erosion, reduction of infiltration and runoff flow, landslide prevention as well as strengthening the slopes . Engineering can use the model of Starlet (Stabilisati dan Rancangbangun Lereng Terpadu, or Engineering of Slope Stabilization and Integrated) involving the role of government officials, industrial and businessmen , residents / communities , and scientists . Kaliandra chosen to be a plant that is part of a stable slope engineering . Kaliandra plants have a good root, the tree canopy is not heavy, high-protein leaves for fodder, stems and twigs are dried for energy (fuelwood ) . These plants, in addition to prevention of landslides, will be useful for people and industry.

DAYADUKUNG TANAH UNTUK BERBAGAI TIPE FONDASI TAPAK PADA LEMPUNG PLASTISITAS TINGGI DI BEBERAPA LOKASI, KABUPATEN MAJALENGKA, JAWA BARAT -, Zufialdi Zakaria; -, Agung Mulyo; -, Luthfan H. Jihadi; -, M. Bey Anural
Bulletin of Scientific Contribution Vol 11, No 2 (2013): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The research location at Majalengka and its surrounding, West Java. The study was conducted in an effort to know soil bearing capacity for various types of foundations which depend on the physical and material properties of the soil. Location of samples obtained from three locations: Kertajati, Cikijing and Cigintung. Samples obtained in the form of high plasticity clay (CH) with the activity rate (A) between 1.01 to 1.42 (with Skempton method) or 1.12 to 1.61 (the Seed method), samples are high activity clays, included of monmorilonitic mineral. Alloweble soil bearing capacity (qa) for a square foundation type, between 11.04 to 19.50 T/M2; for a circular (rounded) foundation types, from 11.00 until 19.07 T/M2; and for the type of continuous foundation, between 8 , 85 to 15.28 T/M2. To avoid of the failure of the foundation, the building load should not exceed the value of allowable soil bearing capacity. The estimated expansive soils, soil improvement is required to be done.

KAJIAN GEOTEKNIK TERHADAP FORMASI TANJUNG DI PIT SAYUNA, SATUI, KALIMANTAN SELATAN, DENGAN MENGGUNAKAN METODE SLOPE MASS RATING -, Geni Dipatunggoro; -, Zufialdi Zakaria
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Lithology of Tanjung Formation from the oldest to the youngest layers consists of siltstone, mudstone, dan carbonaceous mudstone or sandstone layers with four coal seams. Strike of joint varied N28ºE to N48ºE, N188ºE to N245ºE and N284ºE to N354ºE, and dip of joint varied 52º to 88º (very steep). Weathering conditions of rocks at the surface are moderately weathered (WM) to slightly weathered (WS) stage, and some of this surficial soils are at highly weathered (WH) stage as top soisl. In the bor holes these kinds of weathering stages (WM and WS) are characterized by both law core recovery dan RQD. Sedimentary rock of layer the joint to formed rock blok is discontinuity plane (bedding plane dan joint). The classification system is according to Rock Mass Rating (RMR) after Bieniawski, 1973 to determine the Slope Mass Rating (SMR) resulting maximum angle of cut slope of the rock mass in a stable condition. Rock Mass Rating (RMR) of penetrated rocks of the Tanjung Formation in Bore Hole No. AW-1, AW-2, and AW-3 range from 35 to 70, 40 to 50, and 29 to 60 respectively. The class numbers of the rock mass are II and III in general, suggesting that yhe rock masses are stable (class II) to partially stable (class III), but in Bore Hole AW-1 and AW-2 at the depth ranging from 39.45 to 45.30 meters and 04.75 to 27.84 meters (3 rock masses) respectively class IV occur characterizing the instable rock masses.

GEOLOGI TEKNIK JATINANGOR: STUDI DAYADUKUNG TANAH BERDASARKAN PREDIKSI KADAR AIRTANAH UNTUK MENUNJANG ECO-CAMPUSS DI JATINANGOR Sophian, Irvan; Zakaria, Zufialdi; Prianda, Yogi; Utomo, Rizky Narendra
Bulletin of Scientific Contribution Vol 12, No 1 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v12i1.8360

Research location at Rector Building area, Unpad Campus, Jatinangor. The study is a part of research of Jatinangor engineering geology. Strength prediction of soil bearing capacity for shallow foundation is performed by measuring the water content of the soil at four locations sampled. Based on the formula of Hirnawan & Zakaria (1991), a variable value of unit weight (γ) = 1.73 T/M3; cohesion (c ) = 7.80 T/M2; and angle of friction= 13.69 degrees. The soil variables based on the value of water content by 43.85%. The result of soil bearing capacity (in dry conditions) around the ground surface of the rector building area is as follows: Type of foundations Square = 17,732 T/M2; Circular foundation type = 17,708 T/M2; Continuous foundation type = 13.714 T/M2. In wet conditions, the value of carrying capacity must be calculated again.

IDENTIFIKASI DAN MITIGASI PADA ZONA RAWAN GEMPA BUMI DI JAWA BARAT -, Zufialdi Zakaria; -, Ismawan; -, Iyan Haryanto
Bulletin of Scientific Contribution Vol 9, No 1 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Java Island is a region of frequent earthquakes with varying strength. Most of destructive earthquakes measuring over 5.6 on the Richter Scale, as a shallow earthquake with a depth of less than 30 KM. On land, the earthquake can damage a variety of infrastructure and endanger lives. At ocean, earthquakes tend to be a potential tsunami. The tsunami that ever happens is in the south of Pangandaran beach on July 27, 2006. To reduce the impact of the earthquake disaster, the identification and mitigation is required. In the identification of the earthquake in the mainland, the earthquake potential of fault-lines are shown on a large faults, there are: Earthquake's Row of Zone Bayah, Earthquake Row of Baribis Zone, Earthquake Row of Cimandiri Zone, Earthquake Row of Lembang Zone, Earthquake Row of Citanduy Zone. On the identification of the earthquake in the ocean, is required analysis to see the condition of the epicenter in the southern Teluk Pelabuhan Ratu. Mitigation of earthquake disaster can be done, among others through the various activities that need to be socialized, assisted by experts from various disciplines.

AKTIVITAS TANAH LAPUKAN BREKSI VULKANIK DAN IMPLIKASINYA TERHADAP KEKUATAN FONDASI DI JATINANGOR -, Irvan Sophian; -, Zufialdi Zakaria; -, Yuyun Yuniardi
Bulletin of Scientific Contribution Vol 5, No 1 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Jatinangor require public facility. The facility need strength of soil bearing capacity for stable foundation in occupying each soil mass. Soil type in this area is CH ( clay of high plasticity) and MH (silt of high plasticity). Based on diagram of Cassagrande, area research reside between U-line and A-line, and soil type generally is CH, clay high plasticity.At soil which have medium-high activity, allowable soil bearing capacitry ( qa) for continuous foundation is between 31.450 until 52.884 T/m2. Soil bearing capacity ( qa) with activity number (A) show negative relationship ( R - 0.804058). Increasing soil activity caused decreasing soil baring capacity.Instruction of Environmental Monitoring Plas is done especially monitoring at condition of house building and also other medium building like drainage channel and bridge etcetera. Environmental monitoring is required as effort to anticipate damages of arising out effect of negative impact. Small damage is properly attention or improve repaired before becoming is big.

Potential Hazards of Erosion and Conservation Strategis in the Sail Sub-Watershed, Pekanbaru City, Riau Province, Indonesia Ramsof, Rani Amalia; Zakaria, Zufialdi; Irvan Sophian; Arie Afriadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 1 (2025): JGEET Vol 10 No 01 : March (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.1.20795

Erosion in watershed area can be triggered by changes in land use, human activities, and cause increased sedimentation, flood risk, and environmental degradation, effective conservation measures are necessary to ensure its impact is reduced. To determine potential erosion hazards in Sail Sub-Watershed the method used is Revised Universal Soil Loss Equation (RUSLE), parameters include rainfall, soil erodibility, slope length and slope, and land cover and soil conservation. In addition, an analysis of permissible erosion and an erosion hazard index were carried out. The research results show that the level of erosion hazard is influenced by the value of the rain erosivity factor (R) of 2678.98 m with the wet rainfall classification. The soil erodibility factor (K) is dominated by cambisol soil types with a K value of 0.28 and podzolic with a K value of 0.20. The length and slope (LS) factors are dominated by flat topography with an LS value of 0.4. Meanwhile, the land cover and soil conservation (CP) factors mostly consist of open land, shrubs and plantations that have not received any conservation efforts. The erosion hazard level (TBE) in ranges from moderate to very severe, indicating that the areas affected by erosion are predominantly due to the use of open land, such as at station 16. The erosion hazard index (EHI) varies from moderate to very high. As a land conservation effort, vegetative methods in the form of reforestation are recommended for open land, while terrace walls or wet masonry are recommended for agricultural land and plantations. In addition, conservation structures such as retaining walls, bench terraces, or stairs can be implemented on plantation land to reduce the danger of erosion.

Co-Authors abdullah, Fajar Abu Abdillah Ali, Abu Abdillah Adiwijaya, Annisa Ayungingtyas Pratiwi Adjat Sudradjat Adriansyah, Yan Agung Mulyo Agus Wiramsya Oscar Alam, Boy Yoseph Cahya Sunan Sakti Syah Alpionisa, Salsabila Nur Andriani, Tati Andriani, Tati Anggoro Tri Mursito Anggoro Tri Mursito APRILIAN, YOGA Arie Afriadi Asykarulloh, Abdul Wahid Aton Patonah, Aton Bakhtiar, Taufiq Basuki, Jodi Prakoso Bustomi, Zhafran Muhammad Asyam Chaniago, Aulia Eka P S Chen, Reynara Davin Dicky Muslim Dinata, Muhammad Nasheer Ramdan Dwi Purnomo Edi Tri - Haryanto, Edi Tri - Edi Tri Haryanto Edi Tri Haryanto -, Edi Tri Haryanto Eko Tri Sumarnadi Emi Sukiyah Ersyari, Jodistriawan Euis Tintin Yuningsih Febri Hirnawan -, Febri Hirnawan Firmansyah, M. Nizar Geni - Dipatunggoro, Geni - Geni Dipatunggoro -, Geni Dipatunggoro Hendarmawan Hendarmawan Hendarmawan Hendarmawan, Hendarmawan Heri Nurohman Heriwaseso, Anjar Herryal Zoelkarnain Anwar Imam Santosa Indra Permanajati, Indra Irvan Sophian Irvan Sophian -, Irvan Sophian Irvan Sophian, Irvan Ismawan - Ismawan Ismawan, Ismawan Iyan Haryanto -, Iyan Haryanto Iyan Haryanto, Iyan Jakah Jakah Jakah Jakah Jakah, Jakah Johanes Hutabarat Jumhari Jumhari Khoirullah, Nur Kristiawan, Yohandi Luthfan H. Jihadi -, Luthfan H. Jihadi Luthfan H. Jihadi, Luthfan H. Luthfan Harisan Jihadi, Luthfan Harisan M Sapari Dwi Hadian M. Bey Anural -, M. Bey Anural MANIK, VITO ARISTO Mochamad Sapari Dwi Hadian Mubarak, Aziez Muhammad Bey Anural, Muhammad Bey Muhammad Kurniawan Alfadli Mursito, Anggoro Nadhirah Seraphine Nana Sulaksana Nendi rohaendi NINGRUM, WIWIN JUNITA Pajrin, Ulfia Sari Patonah Aton Pradnya Paramarta Raditya Rendra Putra, Rafino Kurnia Putri, Revena Denia Rachmad Setijadi Raden Irvan Sophian -, Raden Irvan Sophian Raden Irvan Sophian, Raden Irvan Rahayu Robiana, Rahayu Rahmi, Nisa Shafira Muthia Ramsof, Rani Amalia Retnoningtyas, Widya Ika Ridwan Banda Rina Devnita Rizky Narendra Utomo, Rizky Narendra Rukmana, Yanwar Yusup Sabila, Zahra Syahida Seraphine, Nadhirah Seru, Imanuel Seru, Imanuel Shafira, Nisa Siahaan, Yakub Sidarto Sidarto Sihotang, Josua Washington Sondi Kuswaryan Sulastri, Murni Sumarnadi, Eko Sumaryono Sumaryono Taufiq, Mochamad Muslim Tono Hartono, Tono Ujang Hidayat Tanuwiria Ulhaque, Thaha Rizal Wicaksana, Kintan Adelia Arum Wicaksono, Danny Wiguna, Purwa Wiyatno Haryanto Yanwar Yusup Rukmana Yogi Prianda, Yogi Yohanes Tan, Yohanes Yuda, Himmes Fitra Yudhicara Yudhicara Yusi Firmansyah, Yusi Yusuf, Muhammad Farhan Yuyun Yuniardi -, Yuyun Yuniardi

Title

Found 70 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 70 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 70 Documents
Search