Articles

Found 18 Documents
Search

Permodelan Aliran Airtanah pada Akuifer Tertekan dengan Menggunakan Metoda Beda Hingga (Finite Difference Method) di Kecamatan Kertajati, Kabupaten Majalengka Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 16, No 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

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

Abstract

Air tanah dalam adalh air yang terdapat pada suatu lapisan tertentu yang berada di dalam tanah baik sebagai ruang antar butiran batuan ataupun pada rekahan batuan. Jadi ruang antar butir, rongga batuan serta rekahan pada batuan. Air tanah dalam ini dapat bergerak secara lateral maupun vertikal yang dipengaruhi oleh keadaan morfologi, hidrologi, dan keadaan geologi setempat. Pengaruh faktor geologi antara lain adalah bentuk  dan penyebaran besar butir, perbedaan dan penyebaran lapisan batuan dan struktur geologi. Untuk menentukan potensi air tanah melalui parameter-parameter akuifer di daerah penelitian dapat didekati dengan menggunakan analisis numerik dengan metode beda hingga (finite difference method).
Investigasi Airtanah Melalui Geolistrik di Darmaga, Bogor Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 16, No 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

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

Abstract

Groundwater is an important resource of water supply in the highly populated city. Groundwater availability in aquifer is determaneted by morfological hydrological and geological factors. Geological factors includes shape and distribution of rock, difference and distribution of layer and geological structure. One method to investigate the groundwater potential can  be used geolistric method, so can be represent about distribution, locations and depth of rock layers in subsurface at the research area. The conductivity hydrolic values in Darmaga, Bogor range from 0.85 to 2.90 m/day or 0,001 - 0,04 and the value of expect discharge is 10 s/d 20 liters/sec.
Evaluasi Kesesuaian Lahan untuk Pendugaan Debit Mata Air Menggunakan Metode Inferensia Fuzzy Sugeno Rachmaniah, Meuthia; Giam, Winda; Waspodo, Roh Santoso Budi
Jurnal Ilmu Komputer dan Agri-Informatika Vol 1, No 2 (2012)
Publisher : Departemen Ilmu Komputer IPB

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

Abstract

Penelitian ini dilakukan untuk mengidentifikasi tingkat debit sumber mata air berkualitas. Debit mata air dihitung berdasarkan jumlah tanaman, tingkat air tanah, dan sudut topografi dengan menggunakan metode inferensia fuzzy Sugeno. Untuk memverifikasi analisis dan hasilnya, telah dikembangkan aplikasi yang menggunakan aplikasi APMA-Fuzzy. Data survei lapangan yang digunakan diperoleh dari desa Balumbangjaya dan Situgede. Selanjutnya, data dianalisis dengan menggunakan fungsi keanggotaan fuzzy Sugeno. Aturan fuzzy dibuat dengan bantuan seorang ahli mata air. Konsep aturan adalah bahwa semakin besar nilai masukan, semakin besar pula nilai keluarannya. Analisis canggih dilakukan untuk menentukan akurasi dan reliabilitas metode fuzzy Sugeno yang digunakan dalam aplikasi. Hasilnya adalah bahwa setiap data dari tiga belas data survey lapangan memiliki akurasi lebih dari 50%, sedangkan akurasi rata-ratanya adalah 77,53%. Dengan demikian, aplikasi yang dikembangkan dalam penelitian ini layak dan aturan yang telah dibuat juga terbukti benar.Kata kunci: fungsi keanggotaan, fuzzy Sugeno, mata air, tingkat debit.
Investigasi Airtanah Melalui Geolistrik di Darmaga, Bogor Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 16, No 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

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

Abstract

Groundwater is an important resource of water supply in the highly populated city. Groundwater availability in aquifer is determaneted by morfological hydrological and geological factors. Geological factors includes shape and distribution of rock, difference and distribution of layer and geological structure. One method to investigate the groundwater potential can  be used geolistric method, so can be represent about distribution, locations and depth of rock layers in subsurface at the research area. The conductivity hydrolic values in Darmaga, Bogor range from 0.85 to 2.90 m/day or 0,001 - 0,04 and the value of expect discharge is 10 s/d 20 liters/sec.
Permodelan Aliran Airtanah pada Akuifer Tertekan dengan Menggunakan Metoda Beda Hingga (Finite Difference Method) di Kecamatan Kertajati, Kabupaten Majalengka Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 16, No 1 (2002): Buletin Keteknikan Pertanian
Publisher : PERTETA

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

Abstract

Air tanah dalam adalh air yang terdapat pada suatu lapisan tertentu yang berada di dalam tanah baik sebagai ruang antar butiran batuan ataupun pada rekahan batuan. Jadi ruang antar butir, rongga batuan serta rekahan pada batuan. Air tanah dalam ini dapat bergerak secara lateral maupun vertikal yang dipengaruhi oleh keadaan morfologi, hidrologi, dan keadaan geologi setempat. Pengaruh faktor geologi antara lain adalah bentuk  dan penyebaran besar butir, perbedaan dan penyebaran lapisan batuan dan struktur geologi. Untuk menentukan potensi air tanah melalui parameter-parameter akuifer di daerah penelitian dapat didekati dengan menggunakan analisis numerik dengan metode beda hingga (finite difference method).
Eksplorasi Potensi Airtanah pada Kawasan Industri Air Mineral Dalam Kemasan, Cemplang, Bogor Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 3, No 2 (2015): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

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

Abstract

Exploration of water resources is an attempt to provide water accesibility for society’s. Required in-depth study of geological analysis-hydrogeological springs and groundwater that it will be processed into clean water to support communities. The intent of this study was to determine the geoelectric-hydrogeological conditions through the distribution characteristic of the aquifer by resistivity rocks around Cemplang, Bogor. The purpose of this investigation was to provide a data where groundwater sources are used for industrial mineral water The exploration results obtained by the location of shallow groundwater in the range between 2-14 m below the surface of the local soil. Free groundwater depth (shallow groundwater) conducted in the study area, groundwater depths ranging between 2-8 m below ground surface (bmt) local. The groundwater is estimated from Mount Salak as a groundwater resource, The estimation geoelectric investigation area is resistivity 3-400 Ωm. Rock aquifer consists of sandy loam, silty sand and sand hydraulic conductivity estimated 3-40 m/day. Layer has a smaller resistivity of 13 Ωm and is at a depth of 17 m bmt. The slopes of this research area is 0017 to obtain the potential of groundwater in at 18,947.37 m3/day, equivalent as 219.30 liters/sec.
Eksplorasi Airtanah untuk Mengetahui Letak dan Sebaran Akuifer dengan Menggunakan Metode Geolistrik di Desa Kertasari dan Meraran, Kec. Taliwang, Kabupaten Sumbawa Besar Waspodo, Roh Santoso Budi
Jurnal Keteknikan Pertanian Vol 6, No 3 (2018): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

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

Abstract

AbstractDevelopment in water resource is an effort to give water access equitably to the community. Profound study of geology – hydrogeology analysis for springwater and groundwater which will be used to support various activity in society is required. The intention of this geo-electric study was to understand the hydrogeological conditions through aquifer distribution characteristic based on rock resistivity in Kertasari and Meraran Village, Taliwang Sub-district, Sumbawa Besar District. The goal of this study was to provide fundamental data of groundwater resource for seaweed industry needs in Kertasari and Meraran Village, Taliwang Sub-district, Sumbawa Besar District. Kertasari village located at coordinate 116⁰ 47' 20.9" E dan 8⁰ 42' 17.2" S. Kertasari village directly adjacent with Selat Alas and Pulau Sarang (Gili Sarang). The east side is steep hills with elevation up to 179 m and sloping toward the west to the beach. Kertasari village dominated with coconuts plantation and shrubbery. The result of hydrogeological conditions that obtained is shallow aquifer and deep aquifer in Meraran and Kertasari village. Average thickness of shallow aquifer and deep aquifer is on 5 – 15 meter and 30 – 75 meter below soil surfaceAbstrakPembangunan di bidang sumber daya air adalah upaya untuk memberikan akses air secara adil kepada seluruh masyarakat. Diperlukan kajian mendalam analisis geologi – hidrogeologi sumber mata air dan airtanah yang akan digunakan untuk menunjang berbagai kegiatan masyarakat. Maksud dari kajian geolistrik ini adalah untuk mengetahui kondisi hidrogeologi melalui sifat sebaran akuifer berdasarkan tahanan jenis batuan di Desa Kertasari dan Meraran, Kecamatan Taliwang Kabupaten Sumbawa Besar. Tujuan dari penyelidikan ini adalah penyediaan data dasar keberadaan sumber air tanah untuk keperluan industri rumput laut di Desa Kertasari dan Meraran, Kecamatan Taliwang, Kabupaten Sumbawa Besar. Desa Kertasari terletak di koordinat 116⁰ 47' 20.9" BT dan 8⁰ 42' 17.2" LS. Desa Kertasari berbatasan langsung dengan Selat Alas dan Pulau Sarang (Gili Sarang). Sebelah timur berupa perbukitan yang terjal dengan ketinggian mencapai 179 m dan landai ke arah barat sampai ke pantai. Desa Kertasari didominasi oleh perkebunan kelapa dan semak belukar. Hasil kondisi hidrologi yang didapatkan adalah akuifer dangkal dan akuifer dalam terdapat pada Desa Meraran dan Kertasari. Ketebalan rata-rata akuifer dangkal terdapat pada kedalaman 5 – 15 meter di bawah muka tanah setempat dan Akuifer dalam terdapat pada kedalaman 30 – 75 meter di bawah muka tanah setempat.
The Design of Infiltration Wells to Reduce Runoff in Babakan Village, Cibinong, Bogor Regency Bahunta, Lussiany; Waspodo, Roh Santoso Budi
Jurnal Teknik Sipil dan Lingkungan Vol 3, No 1 (2018): Edisi 3 (1) April 2018
Publisher : Bogor Agricultural University (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.086 KB) | DOI: 10.29244/jsil.3.1.39-50

Abstract

ABSTRACT Land use change due to housing construction can indirectly damage the water catchment area. This resulted in a decrease in the area of rainwater absorption that caused rain water collected on existing drainage channels. This study aims to analyze the number and dimensions of infiltration wells in reducing the volume of inundation and determine the value of effectiveness reduction of runoff. The infiltration wells was used to collect rainwater and absorb it into the soil. Based on the calculation in Babakan Village area of 2.42 ha, with runoff coefficient of 0.4 for village character, and design rainfall of 97.36 mm/day, the estimated flood volume based on SNI 03-2453-2002 was 805790.30 liter or 805.79 m3. Based on the calculation, Babakan Village needed 115 infiltration wells and 76 trenches. With the infiltration wells and trenches, the total flood volume can be reduced 620.62 m3 or 77.02% of the total runoff. Keywords: design rainfall, infiltration wells, runoff, trenches
Prediksi Potensi Cadangan Air Tanah Menggunakan Persamaan Darcy di Kecamatan Dramaga, Kabupaten Bogor Pangestu, Pangestu; Waspodo, Roh Santoso Budi
Jurnal Teknik Sipil dan Lingkungan Vol 2, No 1 (2017): Edisi 2 (1) April 2017
Publisher : Bogor Agricultural University (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1033.353 KB) | DOI: 10.29244/jsil.2.1.33-42

Abstract

Groundwater needs will increase in accordance to area development. Groundwater has a limited quantity because it depends on the geometry and distribution of aquifer. The purpose of this study were to identify soil lithology and aquifer thickness, to determine soil hydraulic conductivity values and to predict potential groundwater reserves in Dramaga District . The processed data were data geoelectric with Schlumberger configuration, hydrogeological maps, and geological maps of Bogor. Aquifer thickness were obtained from the average yield of the aquifer thickness at the research location. Thickness of unconfined aquifer was 14,69 m and 17,77 m for confined aquifer. Aquifer had lithological layers of andesite, tuffaceous, sandstone, clay, and sand. The value of hydraulic conductivity was 2,5 m / day for unconfined aquifer and 2,04 m / day for confined aquifer. Using the Darcy equation groundwater reserves were estimated 241,29 m3 / day or 2,79 l / s for unconfined aquifers and 1291,19 m3 / day or 14,94 l / s for confined aquifers.Key words: aquifer, Darcy equation,  geoelectric, groundwater reserves
Prediction of groundwater storage based ongeoelectric estimation in Grobogan District, Central Java Jaka Yuwana, Ngudi Aji; Pandjaitan, Nora Herdiana; Waspodo, Roh Santoso Budi
JURNAL SUMBER DAYA AIR Vol 13, No 1 (2017)
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2133.003 KB) | DOI: 10.32679/jsda.v13i1.139

Abstract

One of the solutions for water shortage in Grobogan District is groundwater utilization. Excessive groundwater pumping will decrease groundwater level and trigger a landsubsidence. It is necessary to conduct hydrogeological study to determine the groundwater storage in this area. The purpose of this research were to determine the hydrogeological conditions, aquifer characteristics and potential of groundwater storage in Grobogan district. This research used geoelectrical method to identify rock characteristics. The results showed that the geological formation in Grobogan district consisted of Qa, Tmpk, Tmpl, Tps, Tmw and Qp. Grobogan district had 5 aquifers system, there are: poorly productive aquifers, moderately productive aquifers, locally productive aquifers, extensive productive aquifers and region without exploitable groundwater. The aquifer layer consisted of sand, marl sandy, silty sand and calcareous sand. The unconfined aquifer was located at 1,2 - 58 m from soil surface with average thickness of 13,54 m and the hydraulic conductivity of 3,54 m/day. The confined aquifer depth can be estimated between 29 - 174 m from soil surface with average thickness of 37,4 m and the hydraulic conductivity of 3,87 m/day.The predicted groundwater storage in Grobogan district of unconfined aquifer was 401,33 l/sec and confined aquifer was 1.804,95 l/sec.