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All Journal IPTEK The Journal for Technology and Science EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Jurnal Rekayasa Sipil dan Lingkungan JMPM: Jurnal Matematika dan Pendidikan Matematika JMM (Jurnal Masyarakat Mandiri) Portal: Jurnal Teknik Sipil JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) Journal of Social and Policy Issues Indonesian Community Journal SainsTech Innovation Journal Jurnal Riset Teknik Sipil dan Sains Handasah SainsTech Innovation Journal
Dora Melati Nurita Sandi
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Public Health Social Sciences Transportation Other

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Pemetaan Tematik Tambang Skala Kecil Berbasis Sistem Informasi Geografis Menggunakan ArcGIS di Kabupaten Lombok Barat: Thematic Mapping of Small Scale Mining Based on Geographic Information System using ArcGIS in West Lombok Regency Santoso, Catur Bejo; Melati Nurita Sandi, Dora; Rodiyani, Megalita
SainsTech Innovation Journal Vol. 6 No. 1 (2023): SIJ Volume 6 Nomor 1 Mei 2023
Publisher : LPPM Universitas Qamarul Huda Badaruddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37824/sij.v6i1.2023.529

Abstract

Pulau lombok termasuk kedalam jalur metalogen, merupakan jalur dimungkinkan terbentuknya mineral bahan galian tambang. Potensi bahan galian mineral tambang tersebar secara tidak merata di masing-masing wilayah Kabupaten Lombok Barat dan dengan jenis yang berbeda-beda, tergantung pada proses geologi terbentuknya bahan galian mineral tersebut. Dengan pemaanfaatan Sistem Informasi Geografis (SIG) para pengguna dapat mengetahui keberadaan sumber daya mineral tersebut karena SIG merupakan sistem berbasis komputer yang dapat digunakan karena mampu menyimpan, memanipulasi, menganalisis dan menampilkan data spasial serta menampilkan atribut yang ada di dalamnya secara terpadu. Secara umum metode penelitian menggunakan analisis Sistem Informasi Geografis dengan mengkompilasi data sekunder. Untuk mendapatkan basis data spasial dilakukan analisis SIG berupa digitasi. Berdasarkan hasil digitasi pada Software ArcGIS 10.4.1 Kabupaten Lombok Barat memiliki potensi sumber daya mineral logam dan logam, namun keberadaan sumber daya mineral tersebut pada kawasan hutan dan kawasan pemukiman. Penyebaran bahan galian logam terdapat di dua Kecamatan yaitu Kecamatan Sekotong dan Lembar, dengan komoditi emas dan mangan, sementara bahan galian nonlogam tersebar di sepuluh kecamatan, dengan komoditi bahan galian C seperti batu andesit,dasit, diorit, pasir, tanah urug, kalsit, batu gamping, trass. Hasil overlayer antara peta kawasan hutan dangan wilayah tambang galian logam menunjukkan hutan produksi terbatas yang telah dijadikan sebagai areal penambangan bahan galian logam, mencapai luasan 4606,24 ha atau 49,65 % dari peruntukan kawasan hutan produksi terbatas, sementara pada kawasan hutan lindung yang dijadikan penambangan mencapai luasan 62,3 Ha atau 0,67 % dari luas areal peruntukan kawasan lindung.
Identification of Compressibility Rate and Expansion Index on the Physical Characteristics of Peat Soil Dora Melati Nurita Sandi, Lulu Adiya Salsabila
Jurnal Handasah Vol. 5 No. 01 (2025): Article In Press
Publisher : Fakultas Teknik, Universitas Islam Al-azhar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36679/handasah.v5i01.21

Abstract

ABSTRACT Peat soils have very high pore numbers and moisture content, so their bearing capacity is very low and their compressibility is very high. If it receives a load, it will decrease greatly over a relatively long period of time. Therefore, it is necessary to identify the characteristics of the Ambarawa peat soil due to the different properties of the peat soil in each location, the ability to shrink and the low bearing capacity. The purpose of this study was to determine the physical characteristics, compressibility velocity and development index of Ambarawa peat soil. By using laboratory testing methods in the form of testing soil physical properties including moisture content, specific gravity, fiber content, ash content, pH content and soil mechanical testing including consolidation testing to obtain the compressibility index and development index values. The laboratory test results showed that the moisture content was 410,58%, the specific gravity (Gs) was 1,20, the ash content was 48,143%, the organic content was 51,9%, the pH was 6,6, and the Ambarawa peat was a medium mature peat (hemic) with a fiber content of 56,16%. Sample 1 had a compressibility index (Cc) of 0,430764 and a development index (Cs) of 0,00632. Sample 2 has a compressibility index (Cc) value of 0,430182 and a development index (Cs) of 0,0025. With a percentage difference of Cc of 0,135% and a percentage difference of Cs of 60,44%.
Perkuatan Tanah Gambut Ambarawa dengan Cerucuk Menggunakan Pemodelan Finite Element Method Milala, Chyntia Helmalia Br S.; Sandi, Dora Melati Nurita; Rifqi, Mirza Ghulam
Journal of Applied Civil Engineering and Infrastructure Technology Vol 7 No 2 (2026): Desember 2026 (Articles in Press)
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v7i2.973

Abstract

Peat soils, which are mainly composed of semi-decayed plant remains, usually have high compressibility and low bearing capacity. The high compressibility and low bearing capacity mean that peat soil must be improved if construction is to be built on it. Research was conducted to find a method for soil improvement. Improvements were made by reinforcing the peat with bamboo stakes using the finite element method modeling. In the results of modeling and calculations using software based on the finite element method, the Ambarawa peat soil, before reinforcement with a bamboo stakes at a 5-day time interval, obtained a total deformation value of 7.18 m. After a 5-day interval, the soil collapsed due to its low bearing capacity, preventing further calculations and leaving the safety number unknown. In the Ambarawa peat soil after reinforcement with a bamboo stakes planned 8 m long bamboo stakes and a distance of 1 m between bamboo stakes based on calculations using finite element method modeling at a time interval of 5 days, the total deformation value was obtained at 3.98 m, a time interval of 10 days at 4.46 m, a time interval of 15 days at 4.46 m. Based on the known deformation value, the maximum safety value of this modeling was obtained at a time interval of 30 days, with a value of 1.173.
Co-Authors Anis Armaning Tyas Ayu Wanda Febrian Ayu Wanda Febrian Bachtiar, Riza Rahimi Catur Bejo Santoso Deni Dwi Saputra Ella Nuritasari Erna Suryani Erna Suryani ERNA SURYANI Eva Olivia Hutasoit Firda Rachma Amalia, Firda Rachma Husnur rizal Indarto Indarto Januarti Jaya Ekaputri Maldini, Achmad Reynaldo Megalita Rodiyani Michel Kasaf Milala, Chyntia Helmalia Br S. Muhamad Ari Perdana Nabilah, Sharfina Nurmawati, Yustika Dwi Pradita, Rahayu Prasetyo, Andika Junianto Rachmayu, Farra Anindita Ridho Bayuaji Rifqi, Mirza Ghulam Rodiyani, Megalita Salsabila, Fera Fitri Siska Aprilia Hardiyanti Sukma Anandita, Hillary Widiyanti Tyas, Anis Armaning Ulfi, Kholidah Wahyu Naris Wari Wahyu Satyaning Budhi Wari, Naris Wendy Natasha, Levia Yuni Ulfiyati Zulis Erwanto