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All Journal Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung MINERAL

Irvani Irvani

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Author-ID : 2876601

Humanities Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Other

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KONSERVASI AIR TANAH MELALUI PEMBUATAN BIOPORI SEBAGAI UPAYA MENGATASI KEKERINGAN DI DESA JADA BAHRIN KECAMATAN MERAWANG Anisa Indriawati; Irvani Irvani; Dini Wulansari; Taman Tono; Monika P Handayani
Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Vol 2 No 1 (2015): Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jpu.v2i1.123

Water plays a very important role for humans and the surrounding environment. The amount of water in a particular area can be analyzed through the geology and geohydrology of the area. The lack of water resources in Jada Bahrain Village requires a conservation effort. The conservation efforts made are by making biopores. Making biopores aims to store water reserves so as to overcome drought. The amount of stored water volume can be predicted through the biopore infiltration rate. From the infiltration data obtained, 50 biopore holes in Jada Bahrain Village are estimated to be able to infiltrate water as much as 6286.23 mL/second.

Analisa Pengaruh Ground Vibration terhadap Stabilitas Low Wall Blok Muara Tiga Besar Utara Pit Timur Menggunakan Software GeoStudio 2012 di PT Bukit Asam (Persero) Tbk, Kabupaten Muara Enim Deza Pahlevi Antasari; Irvani Irvani; Anisa Indriawati
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Ground vibration will produce variable Peak Particle Acceleration (PPA) which endanger the stability of the slope especially low wall. This study discusses the effect of ground vibration on the stability of the low wall and restricted in Block MTBU East Pit. While the slope analysis conducted by the method of Morgenstern-Price (1965) Manually and Software GeoStudio 2012, as well as statistical regression analysis approach in finding a relationship between the variables SD-PPA and PPA-FK. The higher the value of the PPA will lower prices Safety Factor (FK) of slope, proved to vibration FK 0.0133 g yield of 1.258 (C-C’) and 1.292 (D-D’), whereas the vibrations of 0.225 g yield of 0.771 FK (C- C’) and 0.768 (D-D’). The relationship between the scaled distance (SD) of the PPA produces non-linear relationship on a graph of power. The relationship between PPA against FK produces a linear relationship on the Section C-C’ and Section D-D’. The proposal obtained at a distance of 200 m from the blasting area 29.352 kg and at a distance of 500 m is 183.447 kg maximum load of explosives.

Evaluasi Produksi Kaksa Dalam Upaya Pencapaian TargetPemindahan Tanah Bulanan Sebesar 30.000 m3 DI TB.2.1 Tempilang, PT Timah (Persero) Tbk Pisca Ramona; Irvani Irvani; Mardiah Mardiah
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Earthmoving target of 30,000 m3 in TB.2.1 Tempilang reached in March where production amounted to 36.350 m3, but the decline occurred in April at 1,83% with amount of production is 29.450 m3 and in May 46% with amount of production is 16,200 m3. Evaluation was conducted against the data rate of excavation In March until May, 2016. Other than that, evaluation of factors of production activities the influential hearts with how to calculate productivity tool for the reviews to know the tool's ability to produce kaksa, reviewing data that stop-time increasing production, the rate of rainfall, and sediment property value with the observe incision drill profile block in March, April, and May 2016. Based on the findings of evaluation, main factors failure achievement of production is time road experienced a decline of 05 hours during the month of April and 138 hours In May due to damage to the equipment and high rainfall reached 332 mm. Monthly soil removal target can be achieved with change hours number: Available 8 hours / day Being 10 hours / day.

Penilaian Tingkat Kestabilan Lereng Batuan Granit Menggunakan Metode Slope Mass Rating (SMR) dan Analisis Kinematika di PT Mandiri Karya Makmur Mirsandi Mirsandi; Irvani Irvani; Ferra Fahraini
MINERAL Vol 2 No 2 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Mandiri Karya Makmur (MKM) was a private company that mine granite rock. Level in mine site was almost steep so that it had the possibility to failure. The study was conducted to assess the stability of rock slope that may endanger the safety of workers. This study to determine the quality of rock mass of slope based on the value of SMR (Slope Mass Rating) and kinematics analysis. The data used included UCS, RQD, Space of discontinuity, Discontinuity conditions, Groundwater conditions and Discontinuity orientation data. Slopes data were divided into 4 scanline based on the direction changing of the slope. To determine the type of failure using kinematics analysis of Dips program and Schmidt Net.The analysis results revealed that the quality of rock mass for scanline II was very good or very stable based on the SMR value. While on the rock mass quality of scanline I, III and IV were good with the stability of the slope was in a stable condition. The possibility of a failure in scanline I, III and IV were only several blocks. There were two blocks that has possibility to failure was on scanline III and IV. Estimation direction of slope failure on scanline III and IV respectively were N 1350 and N 1850 E. The supporting of slope instability can be done by scaling or cutting blocks that have potential to failure.

Perbandingan Perhitungan Sisa Cadangan Batu Granit Menggunakan Metode Cross Section Terhadap Metode Contour Pada PT Aditya Buana Inter Di Kabupaten Bangka Andesta Granitio Irwan; Irvani Irvani; Guskarnali Guskarnali
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The calculation of the remaining reserves is one of the important things in the world of mining, especially in the mining business of granite. The importance of the calculation of reserves is used to determine the potential of granite stone resources in determining the amount of production of the company and the age of the company. For that many methods of calculating the reserves that can be used according to the type of minerals to be calculated the remaining reserves one of them using Cross Section Method and Contour Method. Field measurement used theodolith which further processing done by making contour map using Software Surpac 6.6.2. Processing using Minescape 4.119 Software for Cross Section Method with contour map iterval 1, 5, and 10 m and in division section with interval section 10, 15, and 20 m so as to obtain the width of field section, while Contour Method used contour elevation map that is 1, 5, and 10 m so as to obtain the area of the field between the same elevation. After obtaining the area of each method, use the frustum equation and mean area to determine the volume of surface reserves and from the volume results can be known the length of the mine life. The results obtained from the processing is the method of Cross Section largest reserve calculation value is at contour 1 m with the interval section 10 m that is equal to 5.662.168,28 m3 or 14.721.637,53 tons, while the Contour Method of the largest reserve value is at a contour interval of 1 m ie 4,871,332,59 m3 or 12,665,464,73 tons and for the age of the mine obtained using the highest reserve value in the Cross Section Method has a longer mine life of 42 years, while in Contour Method is 41 years.

Analisis Penggunaan Powder Factor Terhadap Fragmentasi pada Lubang Ledak Vertikal dan Inclined di PT Aditya Buana Inter Muhammad Rafliansyah1; Irvani Irvani; Haslen Oktarianty
MINERAL Vol 4 No 2 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Based on the observations in PT Aditya Buana Inter it is known that the vertical blast hole blasting geometry is an average of burden of 2.5 m, spacing 2.413 m, height 6 m, stemming 2.3 m, primary charge 4 m and diameter of 3 inch or 0.076 m blast hole, the amount of explosives used is in average 667 kg each blasts and the result of the volume rocks in average 2090,25 m3 or 5225,63 tons and has average powder factor value is 0.318kg/m3 with the average of fragmentation is 72.05 cm. Forthe inclined blast hole blasting geometry is an average of burden of 2.5 m, spacing 2.413 m, height 6.21 m, stemming 2.3 m, primary charge 4.21 m and diameter of 3 inch or 0.076 m blast hole, the amount of explosives used is in average 231 kg each blasts and the result of the volume rocks in average 718.44 m3 or 1796,1 tons and has average powder factor value is 0.321 kg/m3 with the average of fragmentation is 26,82 cm. The right of proposal design the blasting geometry in the field by calculating the inclined blast holes with 15° slope, using the evaluation blasting geometry actualobtained has modification blasting geometry with the good calculating which is burden 2.5 m, spacing 2.5 m, stemming 2.56 m, height level9.21 m, subdrilling 0.6 m, and primary charge length7.25 m.The result for a Powder Factor was more efficient which is 0.260 kg/m3 compared with the blasting geometry actual the vertical blast hole is 0.318 kg/m3 and the blasting geometry actual the inclined blast hole is 0.321 kg/m3, and the distribution of rock fragmentation resulting from blasting which corresponds to the target where rocks measuring> 100 cm to 0% compared to the actual geometry of vertical explosive holes of 29.6%.

PEMETAAN FISIK LINGKUNGAN TAMBANG, DAMPAK DAN POTENSI YANG DAPAT DIKEMBANGKAN Irvani Irvani; Fitri Ramdhani Harahap; Sujadmi Sujadmi
Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Vol 2 No 2 (2015): Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jpu.v2i2.131

Hundreds of years of tin mining on Bangka Island has caused damage to tens of thousands of hectares of land. Through the Kuliah Kerja Nyata Pemberdayaan Pemberdayaan Masyarakat (KKN-PPM), physical mapping of environmental damage due to mining and the potential that can be developed in Lumut Village, Riding Panjang and Gn. Muda village, Belinyu sub-district, Bangka district. Physical mapping was conducted through field observations of the mining area, focus group discussions (FGDs) and socialization of the potential of the pit. More than 3,000 ha of land is critical land, environmental damage resulting in erosion, sedimentation, flooding, drought and potential landslides. The pit has the potential to be developed as a source of clean water, fish farming and pit tourism. Generally, the community utilizes the pit as a source of clean water during the dry season. A total of 40 out of 128 collars have the potential to be developed as a source of clean water, a location for freshwater fish farming and the development of collector tourism.

PENGEMBANGAN OBJEK DAN DAYA TARIK WISATA ALAM SEBAGAI DAERAH TUJUAN WISATA DI DESA TANJUNG LABU KECAMATAN LEPAR PONGOK BANGKA BELITUNG Guskarnali Guskarnali; Irvani Irvani; Delita Ega Andini
Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Vol 6 No 1 (2019): Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jpu.v6i1.1421

Indonesia merupakan negara kepulauan yang memiliki berbagai macam wisata dan budaya yang patut untuk dikembangkan. Tujuan dari jurnal ini adalah untuk mengembangkan wisata lokal yang ada di indonesia khususnya di desa Tanjung Labu, Kecamatan Lepar Pongok. Di daerah ini salah satu wisata yang terkenal dan sedang dalam proses pengembangan yaitu wisata Pantai Lampu. Pantai ini berada di bagian sebelah ujung desa tanjung labu tidak jauh dari pemukiman warga. Pantai ini memiliki air yang jernih dan pasir yang putih dan bersih. Melihat potensi yang ada dari pantai tersebut, sudah selayaknya pemerintah melakukan pengembangan terhadap wisata Pantai Lampu. Mahasiswa KKN TEMATIK UBB XIII yang mengabdi di Kecamatan Lepar Pongok ikut turut serta membantu dalam proses pengembangan pantai tersebut bekerja sama dengan pemerintah sekitar. Pantai ini sempat di kembangkan sebelumnya namun karena tidak di rawat dengan baik maka pantai tersebut kembali ditinggalkan dan jarang dikunjungi oleh masyarakat sekitar. Pengembangan Pantai Lampu yang dilakukan berupa pembangunan beberapa infrastuktur serta pembersihan pantai. Ada beberapa program yang dilaksanakan di pantai tersebut yaitu pembuatan spot bakar – bakar, gapura pembuatan spot foto, pagar pembatas, serta arena bermain untuk para pengunjung.

Co-Authors Andesta Granitio Irwan Anisa Indriawati Delita Ega Andini Deza Pahlevi Antasari Dini Wulansari Ferra Fahraini Fitri Ramdhani Harahap Guskarnali Guskarnali Guskarnali, Guskarnali Haslen Oktarianty Mardiah Mardiah Mirsandi Mirsandi Monika P Handayani Muhammad Rafliansyah1 Pisca Ramona Sujadmi Sujadmi Taman Tono

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