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All Journal Indonesian Journal of Geography Civil Engineering Forum Teknik Sipil TAMBANG PROMINE Respati Journal of Applied Geology Jurnal Manusia dan Lingkungan

Dwikorita Karnawati

Department Of Geological Engineering, Faculty Of Engineering, Universitas Gadjah Mada

Author-ID : 295948

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Engineering Environmental Science Social Sciences

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ESTIMASI GEOLOGICAL STRENGTH INDEX (GSI) SYSTEM PADA LAPISAN BATUGAMPING BERONGGA DI TAMBANG KUARI BLOK SAWIR TUBAN JAWA TIMUR Erwin Wijaya, R. Andy; Karnawati, Dwikorita; ., Srijono; Wilopo, Wahyu; Isnawan, Dianto
PROMINE Vol 2, No 2 (2014): PROMINE
Publisher : Jurusan Teknik Pertambangan FT UBB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5.687 KB)

The limestone mine activity needs a good mine plan design with the result that saved for the environment. Mine design is determined by rock mass quality. The rock mass quality in each mine location is different and that is Â influenced by the geological conditions. Research area is located in limestone quarry Sawir Block of Kerek District, Tuban Regency, East Java Province. In limestone quarry area, there is cavity zone which consists cavity limestone layer at the wall of quarry bench. This cavity layer in limestone quarry has occurred by solution process. The cavity layer zone has more potential as weak zone which caused failure of bench in limestone quarry area.Â To analyze of the research of rock mass quality in cavity limestone layer using Geological Strength Index (GSI) system. Final result of the research is rock mass characterization specifically for cavity limestone layer.Â Keywords: Geological strength index, limestone, cavity layer

APLIKASI SPLIT DEKSTOP SOFTWARE UNTUK MENENTUKAN BUTIR BATUGAMPING BERONGGA PADA ZONA CAVITY LAYER TAMBANG KUARI BATUGAMPING DI DAERAH SALE KABUPATEN REMBANGN JAWA TENGAH Wijaya, R. Andy Erwin; Karnawati, Dwikorita; Srijono, Srijono; Wilopo, Wahyu; Isnawan, Dianto
Jurnal Teknologi Informasi RESPATI Vol 8, No 24 (2013)
Publisher : Universitas Respati Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35842/jtir.v8i24.71

Aplikasi industri informatika saat ini telah berkembang sangat luas dalam segala sektor. Berbagai aplikasi telah dirancang yang sesuai dengan kebutuhan industri di segala bidang. Salah satu bidang industri yang banyak menggunakan teknologi informatika adalah industri pertambangan. Industri Pertambangan sangat membutuhkan teknologi informatika dalam kegiatan pengelolaan sumberdaya mineral dan merupakan aspek yang sangat penting dalam meningkatkan kinerja pertambangan saat ini. Aplikasi beberapa software sangat diperlukan dalam berbagai analisis, termasuk jenis aplikasi untuk menentukan distribusi ukuran butiran pada batuan. Aplikasi yang digunakan adalah split desktop software. Aplikasi software ini sangat akurat dan cepat dalam menganalisis distribusi masing-masing ukuran butiran batuan yang dapat mempermudah dan menghasilkan dalam visualisasi bentuk dan ukuran butiran tersebut serta distribusinya. Hasil analisis yang diperoleh akan dijadikan dasar untuk mengetahui karakteristik butiran dalam suatu batuan. Tulisan ini akan membahas bagaimana cara mengaplikasikan split desktop software dan hasil analisis distribusi ukuran butiran pada batugamping berongga di cavity limestone layer daerah Sale, Kabupaten Rembang, Jawa Tengah. Kata Kunci : Split desktop, Ukuran Butir, Batugamping Berongga

MITIGASI BENCANA BERBASIS MASYARAKAT PADA DAERAH RAWAN LONGSOR DI DESA KALITLAGA KECAMATAN PAGETAN KABUPATEN BANJARNEGARA JAWA TENGAH Parlindungan R., Ranto; Fathani, Teuku Faisal; Karnawati, Dwikorita
Civil Engineering Forum Teknik Sipil Vol 18, No 3 (2008): SEPTEMBER 2008
Publisher : Civil Engineering Forum Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1132.272 KB)

This research was carried out due to the occurrence of mass movement in Kalitlaga Village Pagentan Sub-District Banjarnegara District, which was one of most dangerous area to mass movement in Province Central Java. Such movement resulted in damaged houses and road. This research was conducted to recognize and identify the direction and type of mass movement, to identify the triggering parameters and the cause of mass movement in order to provide an appropriate disaster mitigation recommendation and prevention method, as well as to introduce low cost early warning system based on community which enabled the community to prepare and operate the system in lessening the disaster risks. Secondary and primary data used in this research were derived from field investigation and study. The method of the study is analyzing the results of field study. To obtain the percentage of people understanding on disaster mitigation, landslide, and early warning system, interviews were conducted and the interviews outputs were processed using the SPSS software. Result shows that the landslide is predominantly northeastern ward and slump type of movement. To the number of leaky water pipe and infiltrations into the ground induce the mass movement. This movement is due to geological factors such as geomorphology factor and existence of clay stone as well as high rainfall factor. The community low understanding on disaster mitigation represents the reason to install simple and cheap early warning system community based disaster mitigation. Such mitigation is easier to apply than technology based mitigation. It is also more suitable prior to a disaster. Community participation and also support from government are the key efficacy of disaster mitigation.

ESTIMASI GEOLOGICAL STRENGTH INDEX (GSI) SYSTEM PADA LAPISAN BATUGAMPING BERONGGA DI TAMBANG KUARI BLOK SAWIR TUBAN JAWA TIMUR R. Andy Erwin Wijaya; Dwikorita Karnawati; Srijono Srijono; Wahyu Wilopo; Dianto Isnawan
PROMINE Vol 2 No 2 (2014): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

The limestone mine activity needs a good mine plan design with the result that saved for the environment. Mine design is determined by rock mass quality. The rock mass quality in each mine location is different and that is influenced by the geological conditions. Research area is located in limestone quarry Sawir Block of Kerek District, Tuban Regency, East Java Province. In limestone quarry area, there is cavity zone which consists cavity limestone layer at the wall of quarry bench. This cavity layer in limestone quarry has occurred by solution process. The cavity layer zone has more potential as weak zone which caused failure of bench in limestone quarry area. To analyze of the research of rock mass quality in cavity limestone layer using Geological Strength Index (GSI) system. Final result of the research is rock mass characterization specifically for cavity limestone layer.

Desain Tambang Kuari Batugamping Berongga Di Blok Sawir Tuban Jawa Timur R. Andy Erwin Wijaya; Dwikorita Karnawati; Srijono Srijono; Wahyu Wilopo
PROMINE Vol 3 No 2 (2015): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

The research area is a cavity limestone quarry region, located in Sawir Block, Tuban Regency, EastJava Province. Design of the bench in cavity limestone quarry is extremely determined by rock massquality and slope stability analysis. The aim of this research is designing of the bench of cavitylimestone in the quarry based on equibrilium limit and using slide software added. The research usedquantitative method. To obtain slope stability analysis of limestone needs some parameters. The mainparameters are uniaxial compressive strength of intact rock, GSI, lithology, disturbance factor, unitweight and application for slope (height). To solve this analysis is assisted by Roclab software. TheRoclab is a software for determining rock mass strength based on the generalized Hoek-Brown failurecriterion. Final result of the research will be used for safely mine design of the limestone quarry.

Bio-geochemical simulation for solute transport in Piyungan landfill, Yogyakarta Special Province, Indonesia Keophousone Phonhalath; Dwikorita Karnawati; Heru Hendrayana; Doni Prakasa Eka Putra; Kenji Jinno
Journal of Applied Geology Vol 3, No 1 (2011)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Piyungan Landfill is the largest in Bantul Regency. According to water quality sampling taken from a leachate pond, there are significant contaminant issues resulting from landfill leachate. The objectives of this research were achieved by applying a two-dimensional bacteria mediated reduction numerical model was applied. Method of characteristic was applied to solve the advection part of the solute transport equation. Three bacteria (X1, X2, and X3) groups were defined in the redox model. In the conceptual model, bacterial X1 utilizes oxygen under aerobic conditions and nitrate, NO-3 under aerobic conditions as electron acceptors. Consequently, under aerobic conditions bacteria X2, and X3 utilize MnO2, and Fe(OH)3 respectively as electron acceptors. In the redox model organic carbon which was defined as CH2O was considered as the electron donor for all bacteria mediated reduction reactions. The results of research are to improve the understanding of biogeochemical processes in aquifer.

Batch Studies On Arsenic Adsorption Onto Lignite, Bentonite, Shale And Iron Sand: Effects Of Ph, Time, Particle Size And Sulfate Concentration Kyu Kyu Mar; Dwikorita Karnawati; Doni Prakasa Eka Putra; Sarto Sarto; Toshifumi Igarashi; Carlito Baltazar Tabelin
Journal of Applied Geology Vol 4, No 2 (2012)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Arsenic (As) is a toxic element found in both natural and anthropogenic sources. High concentration of this element was recently uncovered in the groundwater of Sumbawa Island, Indonesia. To mitigate this problem, As adsorption potential of natural geological materials like lignite, bentonite, shale, and iron sand obtained in Indonesia were evaluated by batch experiments. Arsenic adsorption onto these materials was investigated as a function of solution pH, particle sizes of adsorbents and coexisting sulfate concentration. In addition, batch leaching experiments were performed to elucidate the stability of geogenic As present in all adsorbents at different pHs. The results showed that among these natural materials tested, lignite was the most effective adsorbent of As(V) followed by bentonite, shale and then iron sand, and that the amounts of As(III) adsorbed onto all adsorbents were lower than those of As(V).This indicates that As(III) is more mobile in comparison to As(V). The adsorption isotherms of As(III) and As(V) conformed to nonlinear types, either Langmuir or Freundlich. It was found that adsorption of As onto these natural adsorbents was pH-dependent. This could be attributed to the changes in the surface charges of the adsorbents with pH. With respect to the adsorbent particle size, the amount adsorbed somewhat increased with decreasing particle size, which could be explained by the larger surface area of the smaller particles. Acidic (pH < 6) and alkaline (pH >10) conditions destabilized the geogenic As content of the adsorbents, indicating that the effectiveness of these natural materials as adsorbents is greatly limited by the pH of the contaminated system. Keywords: Adsorption, arsenic, natural geological materials, particle size, pH

Copper Mobility Assessment Using Speciation Schemes: Case Study–Mantrijeron District, Yogyakarta, Indonesia Phetnakhone Xaixongdeth; Heru Hendrayana; Doni Prakasa Eka Putra; Dwikorita Karnawati; Tsutomu Sato
Journal of Applied Geology Vol 4, No 2 (2012)
Publisher : Geological Engineering Department Universitas Gadjah Mada

factors such physical and chemical properties, especially mineralogical composition of such environment. This study focused on the mineralogical of two soils types (fine sandy loam and loamy fine sand) to retain/mobile Cu. Two non contaminated soils from Yogyakarta urban area, Indonesia, were artificially contaminated with Cu solution. Subsequently, soils artificially contaminated were extracted from various geochemical phases of soil by sequential extraction procedure. The results show that both of soils types can retain Cu well with maximum is 5.8 mg/g of loamy fine sand and 3.9mg/g of fine sandy loam. Additionally, the iron amorphous phase content in clay fraction is influence Cu retains in these soils. This is advantage in environment of Yogyakarta urban area, Indonesia, where this area underlain by loamy sand soil. Keywords: Copper, mobility, iron, sequential extraction.

ESTIMATION OF THE GEOLOGICAL STRENGTH INDEX SYSTEM FOR CAVITY LIMESTONE LAYER IN QUARRY AREA, REMBANG, CENTRAL JAVA PROVINCE, INDONESIA R. Andy Erwin Wijaya; Dwikorita Karnawati; Srijono Srijono; Wahyu Wilopo
Journal of Applied Geology Vol 5, No 2 (2013)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Limestone mining needs a good mine design which is safe for the environment. Mine design is determined by the rock mass quality. The rock mass quality in each mine location is not necessary the same depending on the geological conditions. The research area is located in limestone quarry of Sale District, Rembang Regency, Center Java Province-Indonesia. In the limestone quarry area, there is cavity zone which consists of cavity limestone layer at the wall of quarry bench. This cavity layer in limestone quarry has occurred by solution process. The cavity layer zone is a potentially weak zone which has caused bench failures in the limestone quarry area. The objective of this research is to analyze the rock mass quality in the cavity limestone layer using Geological Strength Index (GSI) system. Final result of the research is a rock mass characterization, specifically for cavity limestone layer. Keywords: geological strength index, limestone, cavity layer

DETERMINATION OF NUCLEAR POWER PLANT SITE IN WEST BANGKA BASED ON ROCK MASS RATING AND GEOLOGICAL STRENGTH INDEX Irvani Irvani; Wahyu Wilopo; Dwikorita Karnawati
Journal of Applied Geology Vol 5, No 2 (2013)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Indonesian government through the National Atomic Energy Agency has planned to build a nuclear power plant. One of the proposed sites is in West Bangka Regency, Bangka Belitung Archipelago Province. The engineering geology of this area is, however, not fully understood and requires further investigations. Engineering geology investigations were carried out by assessing the rock mass quality and bearing capacity based on field observation and drilling data. The assessment was conducted using Rock Mass Rating (RMR) and Geological Strength Index (GSI) classification. The rock mass in the study area was divided into four units, namely Units of Sandstone, Granite, Mudstone and Pebbly Sandstone. The RMR and GSI values in the study area are influenced by the parameters of discontinuity space density, the slope of discontinuity orientation, grade of weathering and groundwater conditions. The assessment shows that the Granite Unit has the best quality which is shown by the average RMR value of 53 and GSI value of 66. Based on the average RMR value, the Granite Unit is estimated to have cohesion value between 0.2 and 0.3 MPa, friction angle between 25° and 35°, and allowable bearing pressure between 280 and 135 T/m2. Based on the GSI value, the Granite Unit is estimated to have uniaxial compressive strength value between 1.0465 and 183.8 MPa, tensile strength between (-0.0122) and (-5.2625) MPa, rock mass strength values between 24.5244 and 220.351 MPa, and modulus of deformation within a range of 1.73–86.68 GPa. The Granite Unit is considered to be the most appropriate location for the nuclear power plants. Keywords: Nuclear power plant foundation, geological strength index, rock mass rating, rock mass quality

Co-Authors Agung Setianto Aoki, Kenji Carlito Baltazar Tabelin Dianto Isnawan Didit Hadi Barianto Doni Prakasa Eka Putra Ekasara, Adam Raka Fatkhiandari, Irien Akinina Gayatri Indah Marliyani Hady, Aulia Kurnia Hary Christady H. Hary Christady Hardiyatmo, Hary Christady Helmi, Hurien Hendy Setiawan Heru Hendrayana I Gde Budi Indrawan Igarashi, Toshifumi Ignatius Sudarno Inderawan, Gde Budi Irien Akinina Fatkhiandari Irvani Irvani Irvani, Irvani Irvani, Irvani Jihad, Abdi Jinno, Kenji Jutika Aditya Nugraha Nugraha Juwarso Juwarso Juwarso, Juwarso Kambali, Retno Agung Prasetyo Kenji Aoki Kenji Jinno Keophousone Phonhalath Klinger, Yann Kurniawan, Telly Kyu Kyu Mar Kyu Mar, Kyu Najib Najib Nugraha, Jutika Aditya Nugraha Phetnakhone Xaixongdeth Phonhalath, Keophousone R. Andy Erwin Wijaya Ranto Parlindungan R. Retno Wuryandari Retno Wuryandari, Retno Ros Soty Rusdin, Andi Azhar Salahuddin Husein Salahuddin Husein Sarto Sarto Sarto Sato, Tsutomu Setiawan, Yosi Soty, Ros Srijono ., Srijono Srijono Srijono Srijono Srijono Srijono Srijono Srijono Srijono, Srijono Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Sudarno, Ignatius Sugito, Zulham Supriyanto Rohadi, Supriyanto Tabelin, Carlito Baltazar Teuku Faisal Fathani Toshifumi Igarashi Triyono, Rahmat Tsutomu Sato Wahyu Wilopo Winarti, Dwi Xaixongdeth, Phetnakhone

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