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Journal : JURNAL TEKNOLOGI TECHNOSCIENTIA

REKAYASA GEOMEDIS PEMANFAATAN PASIR PANTAI DI PANTAI PARANGRITIS DAN SEKITARNYA, KECAMATAN KRETEK KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA Rakhman, Arie Noor
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 1 Agustus 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i1.547

Abstract

This research aims to utilize sand in Parangtritis Beach, Parangtritis Subdistrict, Kretek, Bantul regency, Yogyakarta Special Region. Utilization of sand with geomedical engineering as means therapy for valuable health sand and applicable scientific. The method used in the form of field data capture characteristic properties of sand to determine the effect of the physical properties of the sand to the sand as a medium utilizing health therapy, include: color, grain size, dust properties, mineral composition, geology and inundated the following conditions as the controller. Primary data field is supported by the analysis of laboratory data in the form of grain size distribution, density, magnetic properties, and secondary data relating to the application of sand therapy information. Composition of magnetic minerals (average 66.20%) were more abundant than non-magnetic mineral grain size and the dominance of fine-sized sand (0.425 to 0.075 mm) affects the temperature of radiant heat on the sand (41.4 to 42 °C). Utilization of hot sand is recommended for optimal therapy performed at 16:00 to 18:00 pm with sunny weather conditions. Application using a combination therapy of Egypt model and Tembolor Beach, Lombok. Sand therapy by using a parabolic sand dunes can be applied with local wisdom of the area. Sand retrieval can be done by reusing the small scale and limited. Barchan sand dune land use is not recommended in order to preserve its existence.
REKAYASA VEGETASI UNTUK KONSERVASI LAHAN RAWAN LONGSOR DI LEMBAH SUNGAI CENGKEHAN, KECAMATAN IMOGIRI, KABUPATEN BANTUL Rakhman, Arie Noor; -, Muchlis; Septyawan, Bayu Ade
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 2 Februari 2020
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

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

Abstract

This study aims to select vegetation as a landslide controller in the Cengkehan River Valley, Imogiri District, Bantul Regency, Special Region of Yogyakarta. It is adjusted to the characteristics and thickness of the landslide, the height, and slope of the morphology, the typical roots and the suitability of the community interest of the plant species. The slope of the valley is 15°-60° and 75-325 meters above sea level. Landslides are on the north cliff in the direction of landslides, N 234°E, along the morphological orientation directed at N324°E. Landslides are slides that combine with the movement of rocks (wedge failure). Landslide material results from weathering of basalt that the degree of weathering of rock is not continuous between levels III and V. The soil is eluvial sediment which is identified as latosol with thickness up to 2 meters. The recommended vegetation for shallow landslide type is deep-rooted vegetation. They are Dalbergia pinnata and Parkia speciosa, especially for land with slope between 21 to 40%. Recommended vegetation for slopes above 40% is Aleurites moluccana. Latosol conservation for landslide mitigation can be optimized for soil fertility and productivity through the use of straw, leaves and banana peels.
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

Abstract

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

Abstract

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

Abstract

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
PENGARUH ORIENTASI DISKONTINUITAS BATUAN TERHADAP STABILITAS LERENG DI RUAS JALAN UTARA GUA SUROCOLO BANTUL Arie Noor Rakhman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 16 No 2 Maret 2024
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), Universitas AKPRIND Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v16i2.4658

Abstract

Struktur geologi mempengaruhi stabilitas lereng batuan, terutama di daerah Bantul sekitar Kali Opak sejak gempa tektonik tahun 2006. Penelitian ini dilakukan dengan tujuan untuk mengevaluasi pengaruh orientasi diskontinuitas batuan terhadap stabilitas lereng batuan sebagai bagian dari mitigasi bencana longsor. Lokasi penelitian dilakukan pada tujuh lereng batuan di tepi ruas jalan akses utara Goa Surocolo, Kabupaten Bantul. Penilaian stabilitas lereng dengan menggunakan Rock Mass Rating (RMR) versi 1979 dengan rentang antara 43 hingga 72 menunjukkan lereng batuan cenderung stabil. Setelah RMR 1989 diterapkan dengan penambahan parameter orientasi diskontinuitas terdapat penurunan nilai menjadi 25 hingga 72. Penurunan nilai ini didukung dengan hasil analisis kinematika yang mengindikasikan potensi longsoran baji yang berasal dari perpotongan dua set kekar dengan arah N292°E - N322°E, sejajar dengan kemiringan lereng N300°E - N318°E. Hasil pengujian statistik dari uji t menunjukkan bahwa nilai p yang dihasilkan (0,136) lebih besar dari tingkat signifikansi (0,05). Hal ini mengindikasikan bahwa penambahan parameter orientasi kekar pada RMR tidak memiliki pengaruh signifikan terhadap perbedaan kedua nilai RMR tersebut. Nilai RMR versi 1989 yang terendah dapat dipergunakan untuk mengidentifikasikan lereng mana yang membutuhkan prioritas dalam penanganan dan pemantauan lebih lanjut di antara lereng yang diteliti di lokasi penelitian.