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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Silvikultur Tropika (JST) Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa JPG (Jurnal Pendidikan Geografi) Info-Teknik EnviroScienteae Communications in Science and Technology Civil and Environmental Science Journal (CIVENSE) Jurnal GEOSAPTA Cerucuk. Prodi S1 T. Sipil. Buletin Profesi Insinyur Jurnal Teknologi Berkelanjutan Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT JURNAL REKAYASA KIMIA & LINGKUNGAN
Yulian Firmana Arifin
Universitas Lambung Mangkurat
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The Effect of Change in Hole Diameter to the Bored Piles Capacity: A Case Study on Balang Island Balikpapan Indonesia Muhammad An Al Mawarji; Yulian Firmana Arifin
Jurnal Teknologi Berkelanjutan Vol 9 No 01 (2020): Vol 09 No. 01
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.343 KB) | DOI: 10.20527/jtb.v9i01.167

Abstract

Jembatan Pulau Balang dibangun melintasi teluk Balikpapan menghubungkan Kabupaten Penajam Paser Utara dengan Kotamadya Balikpapan. Bangunan atas Jembatan Pulau Balang adalah cable stayed yang disokong oleh 2 buah pylon. Struktur bawah dari Pylon disokong oleh kelompok bored pile dimana pada saat pengecoran ditemukan volume aktual beton lebih besar dari volume rencana pile. Penelitian ini bertujuan mengetahui perubahan dimensi lubang bor dan daya dukung bored pile karena perubahan dimensi lubang bor tersebut. Analisis dilakukan dengan membandingkan daya dukung rencana, daya dukung aktual, dan daya dukung yang didapat dari pengujian beban bi-aksial Osterberg Cell Test. Dari perhitungan daya dukung menggunakan persamaan daya dukung selimut daya dukung ujung dan pengujian daya dukung berdasarkan OC Test didapatkan daya dukung aktual lebih dari daya dukung rencana, dan lebih dari daya dukung hasil pengujian lapangan. Didapatkan juga perbedaan diameter aktual lubang bor tidak berhubungan dengan jenis lapisan tanah yang ada. Besarnya kenaikan daya dukung hasil OC test terhadap 2xQizin tidak sebanding dengan kenaikan akibat pembesaran diameter tiang. Sehingga kenaikan besarnya hasil OC test dapat disebabkan oleh pembesaran diameter atau bersama-sama dengan faktor lain.
Pengaruh Panjang dan Kemiringan Lereng terhadap Stabilitas Keseluruhan Sheet Pile di Tanah Lunak Yulian Firmana Arifin
Buletin Profesi Insinyur Vol 1, No 1 (2018): Buletin Profesi Insinyur (Januari-Juni)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/bpi.v1i1.1

Abstract

Kegagalan konstruksi sheet pile dapat disebabkan karena perencana kurang teliti dalam menganalisa stabilitas keseluruhan lereng. Kegalalan ini sering terjadi setelah timbunan di belakang sheet pile dilaksanakan.  Paper ini fokus membahas mengenai pengaruh panjang dan kemiringan lereng terhadap stabilitas keseluruhan konstruksi sheet pile khususnya di tanah lunak. Metode finite element menggunakan program Plaxis 2D digunakan untuk menganalisa stabilitas kestabilan lereng yang ditunjukkan oleh nilai faktor keamanan. Model sheet pile dibuat dengan panjang terpancang 20m dan tinggi timbunan 5m yang ditimbung secara bertahap. Panjang lereng di depan konstruksi adalah 15, 30, dan 45 m atau setara dengan 1-3 kali panjang sheet pile yang tertanam. Kemiringan lereng yang diaplikasikan pada model adalah 0(datar), 5, 10, dan 15 derajat.  Hasil analisa memperlihatkan besarnya pengaruh panjang dan kemiringan lereng di depan konstruksi dimana faktor keamanan berkurang 0,02 tiap kenaikan 1 derajat lereng.
The Analysis of Management and Timber Trade System of Gelam (Melaleuca cajuputi) From Peat Swamp Forest in South Kalimantan Yudi Firmanul Arifin; Siti Hamidah; Yulian Firmana Arifin
Journal of Wetlands Environmental Management Vol 2, No 2 (2014): July-December
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (106.417 KB) | DOI: 10.20527/jwem.v2i2.40

Abstract

Until now the raw material of wood especially Gelam (Melaleuca cajuputi) available for supporting the construction of housing and other infrastructures is increasingly large in Indonesia. On the Island of Borneo that partly consists of swamps needs Gelam very large and continuous, particularly for residential development. However, areas of peat swamp forest habitat of this plant from year to year are degradation and shrinkage. This situation is a very big influence on the population of Gelam, while the management and timber trade systems are not well regulated. This study aims to analyze the management and timber trade systems of Gelam particularly in South Kalimantan to provide input to the policy holder in the preservation of Gelam. The method was used a field survey and interviews with traders and policy holders related regulations. The results showed in South Kalimantan the potency of Gelam is only 2,9-7,1 m3/ha and decreasing yearly. Normally Gelam with a diameter <4 cm have been cut down, as well as > 30 cm. These dimensions should not be cut because of <4 cm too young and > 30 cm can be used as seed sources. Gelam derived from peat swamp forest, which mostly comes from the Batola District and some came from Kapuas District of Central Kalimantan. Distributions of Gelam were starting gatherers logging in the forest then sold to small gatherers, next to the large gatherers and distributed to all districts/cities in South Kalimantan, wood processing industries, and some of them were sent to Java. The silviculture system of Gelam was using selective cutting. Classification of wood sizes traded by the diameter divided into 3-4cm, 5-6cm, 7-8cm, 9-10cm, 11-12cm, 13-14cm, 15-19cm and > 20cm to 4m long. Its use consists of a small diameter (3-10cm) for foundry building and firewood, while the large diameter (10-20cm) for the construction of houses in swampy areas, and waste as well as the stems are bent and deformed used for firewood. Until now Gelam becomes into the business community and potential sources of local government revenue if managed properly. However, due to the rules of management and administration in South Kalimantan was not going well, thus threatening the sustainability especially with the growing extent of peat lands being converted into palm oil plantations.
Desain Dan Implementasi Shelter Di Daerah Wisata Bukit Tamiyang Sebagai Persiapan Desa Tangguh Bencana, Desa Kandangan Baru, Kabupaten Tanah Laut Yulian Firmana Arifin; Yuswinda Febrita; Adriani Adriani; Muhammad Hafizhir Ridha; Muhammad Nur Arfiandoyo; Rizqi Arrahman
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 3, No 3 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v3i3.11167

Abstract

Gapoktan Tamiyang Tinggi di Desa Kandangan Baru, Kec. Panyipatan, Kabupaten Tanah Laut memiliki usaha-usaha seperti jasling termasuk lokasi wisata. Bukit Tamiyang yang merupakan salah satu bukit dengan pemandangan indah di Kalimantan Selatan. Kelompok usaha ini kesulitan mengembangkan objek wisata karena beberapa hal termasuk jalur yang sulit untuk dicapai dan lokasi rawan longsor. Masalah ini telah diselesaikan dengan pembuatan peta wisata yang meliputi jalur pendakian yang aman serta potensi-potensi disana. Hanya saja, shelter yang merupakan tempat beristirahat dan berlindung belum tersedia secara memadai. Pengabdian masyarakat ini bertujuan memberikan bantuan teknis penentuan lokasi, mendesain dan membangun shelter yang diharapkan tidak hanya berfungsi sebagai tempat berlindung tapi juga sebagai daya tarik pengunjung untuk mengabadikan diri disana. Langkah-langkah kegiatan yang dilakukan antara lain berdiskusi dengan masyarakat tentang kebutuhan shelter tersebut, menentukan lokasi yang aman dengan sistem informasi geografis, desain, dan implementasi bersama masyarakat untuk membangun shelter tersebut. Dari hasil analisis lokasi kegiatan dengan drone didapatkan gambaran mengenai zona-zona yang rawan longsor. Titik shelter didapatkan ketinggian 295m di atas permukaan laut di koordinat -3o55’15”‒144o43’48”. Shelter dengan ukuran 2×2m2 dengan bahan dominan kayu dan penutup atap multiroof telah terpasang dan dapat langsung digunakan masyarakat.
RANCANGAN TEKNIS DAERAH TANGKAPAN HUJAN UNTUK MENGURANGI PENGIKISAN BIDANG LERENG DAN MENCEGAH AIR LIMPASAN DENGAN METODE CROSS FALL PADA TEMPAT PENYIMPANAN TANAH PUCUK Reinaldy, Wilmar; Nugroho, Yusanto; Razie, Fakhrur; Arifin, Yulian Firmana
EnviroScienteae Vol 20, No 1 (2024): ENVIROSCIENTEAE VOLUME 20 NOMOR 1, FEBRUARI 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v20i1.18845

Abstract

Mining activities often cause environmental damage, such as landslides, floods and ecosystem changes. These activities include land clearing, top soil stripping, overburden stripping, coal excavation, coal transport and processing. It is necessary to have an activity as an effort to rehabilitate so that there is no sustainable environmental damage. Therefore topsoil storage must be carried out in order to return the post-mining area to green again. The consideration of replanting ex-mining areas uses a comprehensive environmental management strategy, especially in terms of handling nutrient-rich topsoil. Topsoil is peeled to a thickness of 0.5 – 1 meter using an excavator. Then it is stacked and stockpiled in a place that is safe from mining activities so that later it can be reused in reclamation activities. The purpose of this research is to obtain a technical design on the corner of the storage area to reduce the eroding impact of rain runoff or other mining activities. Where the method used is to calculate the erosion that occurs on each slope where the test is carried out with 4 different slope angles such as 20⁰, 25⁰, 30⁰ and 35⁰. After obtaining the erosion data, the researchers created an ideal design to reduce the impact by considering the balance aspects of the slope and the material itself. Where the recommended angle data obtained to reduce the eroding impact is 25⁰.
Inventarisasi Titik-Titik Gerakan Tanah Pasca Bencana Longsor di Kabupaten Tanah Laut, Kalimantan Selatan Arifin, Yulian Firmana; Nurhakim, Nurhakim; Hidayat, Taufik; Saputra, Adi; Akram, Muh.; Mikhael, Peredrik F.
Geosapta Vol 8, No 2 (2022): JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v8i2.14011

Abstract

Hujan dengan intensitas tinggi melanda wilayah Propinsi Kalimantan Selatan selama bulan Januari 2021 memicu terjadinya banjir dan longsor di berbagai kabupaten. Salah satu kabupaten yang terdampak adalah Kabupaten Tanah Laut. Dari data BNPB, bencana banjir dan longsor di Kabupaten ini menimbulkan 7 jiwa meninggal dunia, 27024 jiwa mengungsi dan lebih dari 42 ribu jiwa terdampak. Identifikasi gerakan tanah dilakukan dengan menganalisis citra satelit dan foto udara dari pesawat tak berawak (drone). Foto-foto ini diolah dengan bantuan aplikasi Orthophoto. Data ini kemudian dibandingkan dengan data citra satelit sebelum  terjadi bencana dengan bantuan Sistem Informasi Geografis ArcGIS. Hasilnya digunakan untuk inventarisasi potensi longsor dibeberapa titik-titik di Tanah Laut. Hasil studi memperlihatkan daerah-daerah yang rentan terjadi gerakan tanah susulan pada 47 lokasi di Gunung Keramaian, 14 titik di Guntung Besar, dan 3 titik di Bukit Tamiyang. Hasil studi tanah ini dijadikan bahan evaluasi dan masukan bagi pemerintah daerah setempat dalam pelaksanakan kebijakan mitigasi bencana. Hal ini disebabkan ketiga lokasi merupakan daerah perkebunan (Gunung Keramaian dan Guntung Besar) dan destinasi wisata (Bukit Tamiyang).
Volume change in compacted claystone-bentonite mixtures as affected by the swamp acidic water Arifin, Yulian Firmana; Arsyad, Muhammad; Monica, Jeane; Agus, Setianto Samingan
Communications in Science and Technology Vol 6 No 2 (2021)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.6.2.2021.540

Abstract

Water containing sulfuric acid with a pH up to 3 is prevalent in swampy areas. This article focuses on the effects of the solution on volume change of compacted claystone?bentonite mixture. Claystone was obtained from Banjarbakula landfill and it was mixed with bentonite on a 5, 10, 15, and 20% dry mass basis. Samples possessed the dry density of 16 kN/m3 and moisture content of 10, 15, and 20%. The odometer examined the samples' swelling and compression in both pure and acidic water. Characterization tests i.e., XRF, XRD, and FTIR were also performed. The results showed that swelling and compression were affected by initial moisture and bentonite content. Samples with a moisture content of 20% showed compression in acidic water. Acidic water changed the water absorbed on the clay surface without altering the mineral. A mixture containing 20% bentonite compacted to optimum moisture content was found at best in reducing the acidic water effects.
Bearing Capacity of Large Drilled Shafts Fully Embeded in Claystone and Sandstone Layers Marwaji , Muhammad An Al; Arifin, Yulian Firmana
Civil and Environmental Science Journal (CIVENSE) Vol. 5 No. 2 (2022)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2022.00502.2

Abstract

This paper focuses on analyzing the bearing capacity of large diameter drilled shafts that are fully embedded in the claystone and sandstone layers. The foundations used are the drilled shafts for the Pulau Balang bridge pylons built across the Balikpapan bay. Three bored pile foundations with a planned diameter of 2 meters by 60 meters were used. The bearing capacity of the foundation in the field was carried out using the Osterberg cell test. The bearing capacity of the upper side of the foundation is 32.77, 27.26, and 114.46 MN, and the lower parts are 26.98, 27.16, and 50.25 MN, respectively. The results show that the method closest to the upper part of the OC test is the method suggested by Kulhawy and Phoon, with a value of C = 0.5. As for the lower part, the closest approach is the combination of the Kulhawy and Phoon and the Rowe and Armitage methods. The combinations of methods that approximate the total bearing capacity of the field are the Kulhawy and Phoon (1993) and Rowe and Armitage (1987) methods for the dominant claystone layer, and the O'Neil and Reese (1993) and Rowe and Armitage (1987) methods for the main sandstone layer.
Biopolymer of Chitosan from Fish Scales as Natural Coagulant for IronContaminated Groundwater Treatment Chairul Irawan; Iryanti Fatyasari Nata; Meilana Dharma Putra; Rosmasari Marisa; Mira Asnia; Yulian Firmana Arifin
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i2.10601

Abstract

Chitosan, the de-acetylated chitin derivative, was evaluated for its ability to be used as a natural coagulant for Martapura groundwater treatment. This study is used chitosan derived from original fish scales of Kalimantan called Papuyu (Anabas testudineus) for the treatment of iron ion-containing Martapura groundwater through coagulation-flocculation method. The reduction efficiency of iron ion removed by coagulation-flocculation processes using chitosan from Papuyu fish scales is the primary evaluating parameter. The obtained chitosan have been characterized and analyzed by Fourier transforms infrared spectroscopy (FTIR), X-ray Fluroscence (XRF) and Scanning electron microscopy (SEM). Using of the chitosan from Papuyu fish scales as coagulant at neutral pH and room temperature led to decreasing the groundwater iron concentration become 3.43 mg/L (around 71% removal). The result was then compare to the coagulation-flocculation treatment using the commercial chitosan from shrimps shell (93% deacetylated). Moreover, its found the coagulation-flocculation treatment using the chitosan from fish scales as coagulant more favor than the commercial one.
THE EFFECT OF BENTONITE LEVELS ON TIME REQUIRED RH VALUE IN EQUALITY Rizal, Muhammad; Arifin, Yulian Firmana
CERUCUK Vol 7, No 6 (2023): CERUCUK, VOL. 7 NO. 6 JUNE 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/crc.v7i6.12897

Abstract

Negative pore water pressure is an indispensable indicator in unsaturated soil mechanics, so it has a very important function. Measurement suction becomes more important when dealing with bentonite which can be used in containment facilities and hazardous and radioactive waste remediation systems, or as an cover alternativemixing with respect to the time required to obtain equilibrium at the value of RH and temperature.There are 4 (four) combinations of material mixtures, namely the percentage of bentonite 5%, 10%, 15%, and 20% of the amount of claystone used. In mixing the samples, there were 2 mixing methods where the sample type A (claystone + water) + bentonite and simple type B (bentonite + water) + claystone with a dry density of 1.8 gr/cm3. The method used in this test is the capacitance relative humidity or the RH sensor.From the analysis, it is found that the value is influenced by factors ranging from water content where the time obtained is longer with increasing water content, the factor of bentonite where the less bentonite is given, the longer the time obtained. The measurement results are also used to predict the permeability of unsaturated soils. Keywords: Bentonite, Clay Stone, capacitance relative humidity, temperature
Co-Authors Abdi, Ari Surya Achmad Kusairi Samlawi Adi Saputra Adriani Adriani Agus, Setianto Samingan Akram, Muh. Chairil Fachrurazie Chairul Irawan Dewi Sri Susanti Ellyn Normelani Fakhrur Razie Gusti Ihda Majaya Hanifah Mahat Iryanti Fatyasari Nata, Iryanti Fatyasari Lailan Ni`mah Markawie Markawie Marwaji , Muhammad An Al Mawarji, Muhammad An Al Meilana Dharma Putra Mikhael, Peredrik F. Mira Asnia Mohmadisa Hashim Monica, Jeane Muhammad An Al Mawarji Muhammad Hafizhir Ridha Muhammad Noor Azhari Muhammad Nur Arfiandoyo MUHAMMAD RIZAL Nasir Nayan Nasruddin Nasruddin Norma Yuni Kartika Nurhakim Nurhakim Pandu Yuda Permana Reinaldy, Wilmar Ridha, Muhammad Hafizhir Rizqi Arrahman Rosalina Kumalawati Rosmasari Marisa Saiyidatina Balkhis Norkhaidi Siti Hamidah Siti Hamidah Siti Hamidah Siti Helmyati Taufik Hidayat Yazid Saleh Yudi Firmanul Arifin Yusanto Nugroho Yuswinda Febrita