Claim Missing Document
Check
Articles

Found 3 Documents
Search

Geologi lingkungan untuk penentuan koefisien dasar bangunan wilayah Cibinong dan sekitarnya Oki Oktariadi; Dikdik Riyadi
Jurnal Lingkungan dan Bencana Geologi Vol 1, No 2 (2010)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1767.295 KB) | DOI: 10.34126/jlbg.v1i2.9

Abstract

SARIKejadian banjir di wilayah DKI terus berulang walaupun banyak program yang sudah dilakukan dengan curahan dana dan usaha yang besar. Pendekatan teknis yang telah dan akan dilakukan belum secara komprehensif menggunakan informasi geologi lingkungan. Sehubungan hal tersebut perlu diambil langkahlangkah untuk mengatasi masalah guna mengendalikan banjir dengan berbagai upaya jangka pendek dan mampu menjamin keberhasilan jangka panjang. Salah satunya adalah menentukan koefisien dasar bangunan (KDB) untuk meningkatkan kapasitas imbuhan air tanah. Penelitian dilakukan di enam kecamatan yang masuk ke wilayah Kabupaten Bogor, yaitu Cibinong, Citeureup, Gunung Putri, Kedunghalang, Bojong Gede, dan Semplak. Untuk mengetahui KDB tersebut dilakukan analisis neraca air berdasarkan persamaan “Mock”. Dari hasil perhitungan KDB di wilayah penelitian diperoleh nilai KDB: (1) lahan yang disusun oleh batuan kipas volkanik dengan kemiringan lereng < 10% hanya dapat dibangun maksimal dengan KDB 20%, kemiringan lereng 10 – 30% dapat dibangun maksimal KDB 15%, kemiringan lereng > 30% dijadikan sebagai lahan budidaya yang dapat menghindari terjadinya peningkatan air larian, peningkatan erosi dan longsoran. (2) lahan yang disusun oleh batuan sedimen pembangunan dapat dibuat dengan KDB 25% dengan tanpa rekayasa pemulihan neraca air karena kondisi tanah/batuan yang tidak memungkinkan untuk dibuat sebagai bidang resapan. Air larian yang terjadi dapat ditampung dalam kolam penampungan (retention pond) untuk dijadikan sebagai sumber baku air bersih.Kata kunci: geologi lingkungan, KDB, resapan airABSTRACTThe flood events in keep repeating even though many programs have been conducted with the outpouring amount of funds and efforts. The technical approach that have been and will be carried out does not use environmental geology comprehensively. Regarding this matter it needs to solve the problem in order to control the flooding with varoius short term effort that can guaranted long-term success. One of them is determining the building coverage ratio (BCR) to increase ground water recharge capacity. Administratively the study area comprises six districts that includesto the regency of Bogor, namely Cibinong, Cieureup, Gunung Putri, Kedunghalang, Bojong Gede, and Semplak districts. To know the building coverage ratio (BCR) and analysis of water balance was carried out based on “Mock” equation . Calculation of BCR in the research area, results: (1) land that is composed by volcanic rock fan with a slope of <10% can only be developed with BCR of 20%, slope 10-30% can be built up with a BCR up to 15%, slope > 30% can be utilized as cultivation land which can avoid the increase of running water, erosion, and landslide. (2) land development composed by sedimentary rocks can be developed with a BCR up to 25% without engineering approach to recover water balance since the conditions of soil / rock that does not allow water to percolate downward. running water can be accommodated in retention pond to serve as a source of raw water.
Klasifikasi kars untuk kawasan lindung dan kawasan budi daya: Studi Kasus Kars Bukit Bulan Kabupaten Sarolangun, Provinsi Jambi Oki Oktariadi; Edi Tarwedi
Jurnal Lingkungan dan Bencana Geologi Vol 2, No 1 (2011)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1308.873 KB) | DOI: 10.34126/jlbg.v2i1.12

Abstract

SARISalah satu kawasan lindung dalam Peraturan Pemerintah Nomor 26 Tahun 2008 tentang RTRWN adalah kawasan lindung geologi. Adapun salah satu kriterianya adalah keunikan bentang alam kars. Sementara itu Keputusan Menteri Energi dan Sumber Daya Mineral Nomor 1456.K/20/MEM/2000 tentang pedoman pengelolaan kawasan kars yang bersifat operasional, menyatakan bahwa kawasan kars kelas I merupakan kawasan lindung sumber daya alam yang penetapannya mengikuti peraturan perundang-undangan yang berlaku. Dari kedua peraturan tersebut terdapat sinkronisasi yang dapat mengklasifikasikan kars ke dalam kawasan budi daya dan kawasan lindung geologi. Oleh karena itu diperlukan analisis penetapan kawasan kars agar pemanfaatannya optimal dan berwawasan lingkungan. Metode analisis menggunakan standar baku yang digunakan di Pusat Sumber Daya Air Tanah dan Geologi Lingkungan, sementara proses analisis menggunakan sistem informasi geografis (SIG) dengan cara pembobotan dan overlay. Berdasarkan hasil overlay peta tematik komponen kars menghasilkan peta kelas kawasan kars, yaitu kawasan kars lindung geologi mempunyai jumlah (total) skor antara 79 hingga 141, dan kawasan kars budi daya mempunyai jumlah (total) skor antara 47 hingga 78. Kondisi di lapangan kawasan kars lindung geologi memiliki keunikan bentang alam kars, sehingga arah pemanfaatannya sesuai untuk kegiatan geowisata. Sementara pada kawasan kars budi daya dapat dilakukan kegiatan penambangan setelah dilakukan studi geologi lingkungan detail untuk menentukan zona pemanfaatan lahan secara optimal.Kata kunci: kars, kawasan budi daya, kawasan lindung geologiABSTRACTOne of the conservation areas mandated in Government Regulation number 26 of 2008 concerning Regional Planning (RTRWN) is the geological conservation area. One of the criteria is the uniqueness of the karst landscape. Meanwhile, the decree of the Minister of Energy and Mineral Resources number 1456.K/MEM/2000 about the management of operational guidelines of karst landscape. It stated that the first class karst area is classified as protected natural resources, of which its implementation follows the fullest extent of the law. There is a synchronization found in both regulations that classifies the karst area  into the cultivation area and geological conservation area. Therefore, an analysis for determining karst areas in order can be utilized optimally with friendly environment is required. The method of analysis used by the Center for Groundwater Resources and Environmental Geology is the standard one, whereas the analysis process is using Geographic Information System (GIS) by weighing and overlaying. Based on the overlaying result of thematic karst component map, a standard karst map is resulted, namely geological conservation for karst area which has a total score of 79 up to 141, and karst conservation area for cultivation which has a total score of 47 up to 78. Field condition shows that a geological coservation for karst area has a karst landscape uniqueness, so it is appropriate to be used as geotourism activity.Meanwhile, cultivation karst area can be used for mining activity as far as a detail environmental geologystudy to determine the optimal utilization zone in the area has been carried out.Keywords: karst, cultivation region, protected areas of geology
Mining-based tourism in Sawahlunto National Geopark Nendi Rohaendi; Revi Timora Salajar; Darius Agung Prata; Oki Oktariadi
International Journal of Applied Sciences in Tourism and Events Vol. 6 No. 2 (2022): December 2022
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/ijaste.v6i2.151-163

Abstract

Determining post-mining land use is a challenging process for mining cities. The new rapid development of geopark is an alternative solution to how to deal with mined land. The objective of the research is to study potential anthropogenic landforms (mining landforms) or geosite as a tourism object in Sawahlunto national geopark. Sawahlunto in west Sumatra province is the oldest coal mining industry. This mining area mostly belongs to state-owned companies in Indonesia. The potential tourism in geoparks will be assessed using the ABC concepts. The method will be useful information for alternative post-mining land use. Primary data were obtained through field observations at Sawahlunto Regency and in-terviews with the stakeholders. Secondary data were collected through desk study in the form of spatial information and policy documents, especially from The Agency of Local Spatial Plan, and The Agency of Culture, Heritage, and Museum of Sawahlunto Regency. Filed observation activities aim to determine the position of geodiversity, biodiversity, and cultural diversity potential using Global Positioning System (GPS) technology.  The results of field observational data are processed using Geographic Information System (GIS) software including data inputting, data plotting, and data analysis. Interviews were conducted with ac-tors directly involved in the tourism development of the Sawahlunto Regency such as The Agency of Spatial Planning and The Agency of Culture, Heritage, and Museum of Sawahlunto Regency. The result of the research shows that there are four mining-based tourism zones in Sawahlunto national geopark.  The identification of mining-based tourism is broadly useful for the future development of Sawahlunto geopark. However, since there is complexity in terms of the management of geopark, people need to carefully consider spatial plan for geopark area.