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PENGARUH DISKONTINUITAS DAN PELAPUKAN LAVA ANDESIT TERHADAP SIFAT MEKANIK BATUAN DI GIRIPURWO, GIRIMULYO, KULONPROGO, DIY Arie Noor Rakhman; Nur Widi Astanto
Jurnal Mineral, Energi dan Lingkungan Vol 1, No 2 (2017): Desember
Publisher : Fakultas Teknologi Mineral, Universitas Pembangunan Nasional (UPN)

Penelitian ini bertujuan untuk mengetahui pengaruh diskontinuitas dan pelapukan massa batuan lava andesit terhadap sifat karakteristik sifat mekanik batuan beku lava andesit di Daerah Giripurwo, Kecamatan Girimulyo, Kabupaten Kulonprogo, Daerah Istimewa Yogyakarta.Data penelitian berupa kondisi geologi, sifat fisik batuan, derajat pelapukan disertai hasil uji kuat tekan, absorpsi atau penyerapan air dan petrografi pada batuan lava andesit. Model struktur batuan lava yang dipergunakan yaitu model Gordon Andrew MacDonald (1972). Identifikasi derajat pelapukan batuan dan pola strukturnya pendekatan model Geological Society of London (1990). Sintesa data menghasilkan hubungan korelasi antar sifat fisik terhadap sifat mekaniknya.Nilai kuat tekan batuan lava andesit (396.18 - 1,802.89 kg/cm2) dikontrol oleh bidang diskontinuitas berupa struktur kekar, skoria, sesar dan bidang ketidakselarasan. Dari bawah ke atas berkembang derajat pelapukan tingkat IB hingga IV, kekuatan batuan semakin rendah oleh adanya air berupa tegangan air pori (nilai serapan 0,31 – 2,19%) pada bidang diskontinuitas tersebut. Kekuatan friksi batuan dapat bertambah oleh keberadaan mineral karbonat produk pelapukan mineral plagioklas yang mengisi celah bidang diskontinuitas.

PENGARUH DISKONTINUITAS DAN PELAPUKAN LAVA ANDESIT TERHADAP SIFAT MEKANIK BATUAN DI GIRIPURWO, GIRIMULYO, KULONPROGO, DIY Arie Noor Rakhman; Nur Widi Astanto
Jurnal Mineral, Energi dan Lingkungan Vol 1, No 2 (2017): Desember
Publisher : Fakultas Teknologi Mineral, Universitas Pembangunan Nasional (UPN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmel.v1i2.2111

Penelitian ini bertujuan untuk mengetahui pengaruh diskontinuitas dan pelapukan massa batuan lava andesit terhadap sifat karakteristik sifat mekanik batuan beku lava andesit di Daerah Giripurwo, Kecamatan Girimulyo, Kabupaten Kulonprogo, Daerah Istimewa Yogyakarta.Data penelitian berupa kondisi geologi, sifat fisik batuan, derajat pelapukan disertai hasil uji kuat tekan, absorpsi atau penyerapan air dan petrografi pada batuan lava andesit. Model struktur batuan lava yang dipergunakan yaitu model Gordon Andrew MacDonald (1972). Identifikasi derajat pelapukan batuan dan pola strukturnya pendekatan model Geological Society of London (1990). Sintesa data menghasilkan hubungan korelasi antar sifat fisik terhadap sifat mekaniknya.Nilai kuat tekan batuan lava andesit (396.18 - 1,802.89 kg/cm2) dikontrol oleh bidang diskontinuitas berupa struktur kekar, skoria, sesar dan bidang ketidakselarasan. Dari bawah ke atas berkembang derajat pelapukan tingkat IB hingga IV, kekuatan batuan semakin rendah oleh adanya air berupa tegangan air pori (nilai serapan 0,31 – 2,19%) pada bidang diskontinuitas tersebut. Kekuatan friksi batuan dapat bertambah oleh keberadaan mineral karbonat produk pelapukan mineral plagioklas yang mengisi celah bidang diskontinuitas.

PENGARUH DISKONTINUITAS MASSA BATUAN VOLKANIK TERHADAP STABILITAS LERENG DI DAERAH JELAPAN DAN SEKITARNYA, KECAMATAN PUNDONG, KABUPATEN BANTUL, DAERAH ISTIMEWA YOGYAKARTA Arie Noor Rakhman; Nur Widi Astanto Agus Triheriyadi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 10 No 1 Agustus 2017
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v10i1.85

This research is intended to know the effect of discontinuity on the mass of volcanic rock for rock slope stability. The study sites are located at Jelapan area and its surrounding, Pundong District, Bantul Regency, Special Region of Yogyakarta. With stability assessments of rock slopes, it can be used to identify potential disasters of rock mass movement, direction of movement and recommendations for disaster risk minimization. Analysis of the continuity on the mass of volcanic rock using rock mass classification of rock mass rating system (RMR) (Bieniawski, 1989). The data used are physical properties, index properties, mechanical properties, orientation of joint position and rock slope. The synthesis of data is done mainly on morphological data, stratigraphy, geological structure to know the control of geological condition on the stability of volcanic rock slope in research area. Based on the calculation of the rock mass classification of RMR, the cliff at 7°59’20,88” LS 110°19’19,09” BT is 28 which is considered poor. The RMR value is controlled by intensive joints that dominate with joint spacing less than 60 mm; the condition of the surface of the joint field is smooth and continuous, estrangement joint 1 - 5 mm, slightly weathered with a value RQD 43.37%. Rock mass that collapses and landslides are lava and andesite breccia. The rock fall occurs following the slope of the planar plane of the platy joint structure and the rock contact N170°E/32°. It is interpreted by the initial stress control with high anisotropic stress at the edge of the slope.

STUDI REKOMENDASI PENGGALIAN DITINJAU DARI STRUKTUR BIDANG LEMAH DAN KEKUATAN BATUAN LAVA ANDESIT DI DAERAH GIRIMULYO, KECAMATAN GIRIMULYO, KABUPATEN KULONPROGO, PROPINSI DAERAH ISTIMEWA YOGYAKARTA Nur Widi Astanto Agus Triheriyadi; Arie Noor Rakhman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 9 No 1 Agustus 2016
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v9i1.149

Andesite mining material needs both for industrial development and may be available by way of mining activities. Girimulya area, District Girimulyo, Kulon Progo has abundant natural resources, among which andesite. This study aims to determine the direction of the excavation recommendation in terms of structure and a weak field strength andesite lava rock. Identifying physical properties and mechanical properties of materials on the excavation carried out as igneous rock andesite lava.Collecting data in the field include: plotting the location of observation; identification of rocks and weathering; data recording and sampling rock geology and weathering. Sampling each location point observations were made in the form of samples disrupted. Research in the laboratory / studio in the form of observational petrology, testing the physical properties of rocks and analysis of compressive strength / UCS. Along with field research and laboratory / studio, also conducted research relevant literature.Andesite in the study area is a product of the old volcanic activity that is part of the Old Andesite Formation. In the field, andesite lava fields have a weak form of fracture. Based on the graphical method Pettifer and Fookes (1994) in terms of the structure of the field is weak and the mining rock mechanics properties including the criteria for Easy Ripping to Very Hard Ripping. If it will be mining should be conducted prior to demolition andesite lava rock. Heavy equipment Bulldozer recommended that the type D6, D7, D8 and D9. Furthermore it can be dug with a backhoe to be loaded and transported.

PERANAN SULFUR DIOKSIDA PADA PEMBENTUKAN KOROSI LOGAM DAN IMPLIKASINYA BAGI KESEHATAN MANUSIA DI GUNUNG LUMPUR, DESA KUWU, KECAMATAN KRADENAN, KABUPATEN GROBOGAN, PROPINSI JAWA TENGAH Arie Noor Rakhman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 2 Februari 2016
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v8i2.159

This research aims to review the existence of sulfur dioxide result of the mud volcanoes Bledug Kuwu. Research sites in the Kuwu Area, Kradenan District, Grobogan Regency, Central Java Province. Utilization of research results for the potential of sulfur dioxide’s influence for human health by identification of the nature of corrosion metal formed. The method used in the form of field and laboratory, that was performed by comparing some of physical and chemical characteristic of mud and water. The determination supported by observation the nature of corrosion metal in the field. By recognizing geology medical condition following corrosion metal identification, its obtained benefit to analyze the potential an impairment of health and directive treatment. Farther away from the center of the mud volcano, the potential of sulphur gas pollution tends to be low. Sulphur content less than 73,83 ppm to 10,90 ppm. Pollution influenced by geogen and biogen, that it was identified from the growth of vegetation and corrosive metal existence. Vegetation can live starting 200 meters from the center of the mud volcano and fertile at more than 300 meters. This were in accordance with the existence of corrosion (rusts) on metal that its more vulnerable when approaching to the center of the mud volcano. Potential an impairment of health are irritation respiratory systems, irritation of the windpipe, acute toxicity for the old man and there are had the disease chronic in cardiovascular respiratory system. Hence tourist development should be accompanied by medical equipment, awareness of the use of mask to anticipate respiratory disorders, socialozation for visitors and the community of the most sensitive due to pollutants sulfur dioxide

Persebaran Salinitas Air Tanah Di Kecamatan Dukuhseti Kabupaten Pati Muchlis Muchlis; Paramita Dwi Sukmawati; Arie Noor Rakhman; Thomas Budi Antoni
Jurnal Teknologi Vol 14 No 1 (2021): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/jurtek.v14i1.1384

Daerah sekitar pesisir Kecamatan Dukuhseti didominasi oleh kawasan pemukiman dan lahan tambak. Banyaknya penggunaan lahan tambak berpotensi menyebabkan tingginya salinitas air tanah di Kecamtan Dukuhseti, karena lahan tambak menggunakan air asin sehingga sangat mudah merembes ke dalam tanah baik melalui atas permukaan ataupun bawah permukaan tanah. Tujuan penelitian ini adalah mengetahui tingkat dan sebaran salinitas air tanah di Kecamatan Dukuhseti. Teknik analisis yang digunakan dalam penelitian ini adalah analisis deskriptif kuantitatif berdasarkan klasifikasi salinitas Goetz, dan klasifikasi zona konservasi air tanah Departemen Energi Sumber Daya Mineral. Hasil penelitian menunjukkan bahwa salinitas air sumur di wilayah Kecamatan Dukuhseti memiliki nilai 0 mg/l sampai dengan 15.000 mg/l. Salinitas yang terdeteksi masih dalam katagori tawar-payau. Berdasarkan zona konservasi air tanah Departemen Energi dan Sumber Daya Mineral air tanah di Kecamatan Dukuhseti masuk kedalam 3 kategori yaitu aman, rawan, dan kritis. Kadar salinitas pada air tanah sebagian besar dipengaruhi oleh jarak dari garis pantai dan penggunaan lahan tambak.

SELIDIK CEPAT CIRI AIR TANAH YANG TERCEMAR (KAWRUH TIRTA) DI FORUM KOMUNIKASI WARGA BUDAYA JAWA NGUDI KAWRUH JAWA, MRANGGEN, SEWON, BANTUL Arie Noor Rakhman
DHARMA BAKTI Dharma Bakti-Vol 3 No 1-April 2020
Publisher : LPPM IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/dharma.v3i1.2676

Groundwater condition in several locations in Mranggen area, Banjarharjo Village, Sewon District, Bantul Regency are very clear, but the results of laboratory analysis state that it is unsuitable for consumption. This has been increasingly felt since the earthquake in 2006. This community service activity aims to reintroduce the way to quickly investigate polluted groundwater using tea water. Community service methods that have been carried out through counseling at the Ngudi Kawruh Java Culture Citizens Communication Forum. The results of the counseling found residents were able to re-recognize the culture of local wisdom, namely the application of the science of finding the right water source (Javanese: kawruh tirta) when making wells using the tea water method. From the results of re-analysis in the laboratory again found that groundwater in this area contains manganese (0.27 mg / l), exceeding the threshold (0.1 mg / l) with a neutral water pH (6.8). This indicates that groundwater in this area is indeed not suitable for drinking. Further treatment is needed to make it drinkable, namely by the reverse osmosis method. This method has been believed to be able to minimize the manganese content in groundwater by 90%.

EDUKASI PENDEKATAN SELIDIK SIFAT FISIK BATUAN LAPUK UNTUK PENANGANAN BENCANA LONGSOR DALAM MASA PANDEMI COVID-19 DI RT 02 PEDUKUHAN CENGKEHAN, WUKIRSARI, KAPANEWON IMOGIRI, KABUPATEN BANTUL Arie Noor Rakhman; Fivry Wellda Maulana
JPMA - Jurnal Pengabdian Masyarakat As-Salam Vol. 1 No. 2 (2021): Jurnal Pengabdian Masyarakat As-Salam (JPMA)
Publisher : Asosiasi Dosen Perguruan Tinggi Islam

Gerakan massa di Pedukuhan Cengkehan, Kalurahan Wukirsari, Pakanewon Imogiri, Kabupaten Bantul, merupakan longsoran yang terjadi sejak tahun 2019. Longsoran bergerak aktif, terutama pada musim hujan. Akibat perubahan iklim global, selain mempengaruhi pola dan intensitas hujan yang cenderung ekstrim, juga berpengaruh terhadap penyebaran pandemi dan penyakit Covid-19. Kegiatan pengabdian ini merupakan bagian desiminasi hasil penelitian penanganan gerakan massa di perbukitan dari gunung api purba Giriloyo dan sekitarnya. Potensi gerakan massa dapat dikenali dari pencermatan sifat fisik melalui pelapukan batuan. Perubahan sifat fisik menunjukan derajat pelapukan batuan dengan menggunakan metode Geological Society of London yang dipublikasi mulai tahun 1990. Dari hasil penelitian diperoleh informasi bahwa gerakan massa merupakan campuran material tanah dan batuan yang lapuk. Material ini berasal dari tinggian lembah Sungai Cengkehan. Batuan lapuk berupa batuan vulkanik yaitu tuf dan basalt yang berumur Miosen Awal. Lereng basalt di tebing Sungai Cengkehan bagian utara lebih berpotensi longsor daripada lereng basalt di tebing selatan. Bencana longsor pada lereng batuan lapuk tersebut lebih diwaspadai ketika terjadi hujan dan atau gempa. Kejadian hujan lebat dengan intensitas lebih dari 2 jam dapat memicu longsoran di lereng bagian utara.

Aplikasi sistem informasi geografis untuk pemetaan kerentanan kuantitas mata air dan pengaruhnya terhadap budidaya kopi di Kecamatan Grabag, Kabupaten Magelang. Cherlin Rian Rosalia; Muchlis Muchlis; Arie Noor Rakhman
JNANALOKA Vol. 03 No. 02 September Tahun 2022
Publisher : Lentera Dua Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36802/jnanaloka.2022.v3-no2-87-97

The springs in Grabag Sub-district have decreased the quantity of water because of a large amount of water taken from the springs by the residents and PDAM. This can threaten the volume of existing springs. This study aims to analyze the quantity vulnerability of the spring area and identify the conservation in the management of springs in the study area by using a Geographic Information System (GIS) application. The data used is the observation of data in the field and laboratory. Data as soil type, morphometry, constituent lithology, land use, vegetation, water discharge, access, and use of water. We classify the vulnerability of springs in the study area as low - medium vulnerability. Areas of low vulnerability, vulnerability class 2.0–2.6 are scattered in the springs of Tuk Ngrancah, Tuk Tlogosari, Tuk Gedad, and Tuk Tlogorejo. This area is composed of colluvial deposits of regosol soil, low rainfall (1750–2250 mm/year), sloping slopes (9-15°), and they used the land as gardens. Medium classification areas, with vulnerability class 2.7–3.3 spread over the springs of Tuk Bleder, Tuk Mas Kalimas, Tuk Kembar, and Tuk Udal. This area is composed of colluvial deposits of latosol soil, moderate rainfall (2250-2750 mm/year), undulating slopes (16-25°), and land use as gardens. The direction of spring conservation techniques is as agronomic conservation techniques with vegetative methods. The application of this method to springs with low vulnerability classification is the use of bamboo (Bambusa sp.) as a ground cover plant. Coffee liberika (Coffea liberika) together with lamtoro (Leucaena leucochephala) and sugar palm (Arenga pinnata) were directed to springs with moderate susceptibility classification. The existence of agro-tourism land through coffee cultivation is the direction of agronomic conservation techniques in Grabag District.

PENELITIAN MIKRO DAN REKAYASA BATUGAMPING KALKARENIT DI DESA POLO DAN DESA BATNUN, KECAMATAN AMANUBAN SELATAN, KABUPATEN TIMOR TENGAH SELATAN, PROPINSI NUSA TENGGARA TIMUR Arie Noor Rakhman
Jurnal Teknologi Vol 1 No 2 (2008): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Tujuan penelitian ini adalah untuk menyelidiki dan merekayasa sumber daya batugamping kalkarenit di Desa Polo dan Desa Batnun, Kecamatan Amanuban Selatan, Kabupaten Timor Tengah Selatan, Propinsi Nusa Tenggara Timur. Penelitian ini menghasilkan peta isopach berskala 1:2.000 dalam bentuk diagram blok tiga dimensi. Dari pemetaan tersebut dapat dihitung cadangan batugamping kalkarenit yang dapat ditambang. Hasil analisis petrografi, kimia, fisik, dan analisis kekuatan batuan menunjukkan bahwa jenis batugamping kalkarenit tersebut telah memenuhi persyaratan mutu/kualitas Standarisasi Nasional Indonesia (SNI) dalam penggunaan sebagai batu hias pada dinding interior/eksterior bangunan.

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