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All Journal Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Civil Engineering Journal JMM (Jurnal Masyarakat Mandiri)
Idmi, Mohammad Habibiy
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Astronomy Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics Other

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Identifikasi Potensi Air Tanah Berdasarkan Metode Geolistrik Resistivitas dan Survei Hidrogeologi (Studi Kasus Dusun Sumber Waluh, Desa Pringgodani, Kec. Bantur, Kabupaten Malang) Susilo, Adi; Juwono, Alamsyah M.; Aprilia, Faridha; Idmi, Mohammad Habibiy; Hisyam, Farizky; Hasan, Muhammad Fathur Rouf
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 11, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v11i1.29457

Abstract

Bantur District in Malang Regency is an area that is vulnerable to drought disasters. A geoelectrical resistivity survey has been conducted in Sumber Waluh Hamlet, Pringgodani Village, Bantur District, Malang Regency as an effort to mitigate drought disasters. This study aims to identify the distribution of aquifer layers based on the results of subsurface resistivity modeling. The identified aquifer layers can be used as a solution to the problem of drought disasters. In this study, geoelectrical resistivity measurements used the VES technique, i.e. the Schlumberger configuration, which was carried out at seven points. Analysis of the modeling results showed the existence of a shallow aquifer layer with a depth of 8-20 meters and a deep aquifer with a depth range of 50-70 meters. The aquifer layer has a resistivity value between 0.51-31.36 Ωm which is interpreted as a tuffaceous sandstone layer. In hydrogeological modeling, it is interpreted that the position of the groundwater level is at a depth of 40-50 meters. Thus, the results of this study can be used as a recommendation for drilling points to find new water sources in the research area.
Subsurface Mapping and Geotechnical Design for Landslide Mitigation Hasan, Muhammad Fathur Rouf; Susilo, Adi; Sutan Haji, Alexander T.; Suryo, Eko Andi; Agung, P. A. Maha; Idmi, Mohammad Habibiy; Musta, Baba
Civil Engineering Journal Vol. 11 No. 9 (2025): September
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-09-015

Abstract

The landslide near the PT Molindo Incinerator Unit poses a significant threat to the facility’s structural integrity. Without immediate mitigation measures, the incinerator building is at risk of collapse, potentially impacting adjacent settlements due to cascading structural failures. To reduce the risk of further instability, urgent geophysical investigation is required to characterize the subsurface lithology and assess the groundwater table conditions. A geoelectrical resistivity survey was conducted using the Schlumberger configuration across 8 measurement points along a 100-meter survey line, with 10-meter electrode spacing. The resistivity measurements ranged from 3.30 to 25 Ωm, which were interpreted as clay-rich layers; 26 to 167 Ωm, corresponding to sandy clay; and 167 to 15,944 Ωm, indicating bedrock. The potential slip zone is interpreted at an average depth of 20 to 25 meters, indicated by very low resistivity values with resistivity values between 3.30 and 25 Ωm. Field observations confirmed that the landslide materials predominantly consisted of clay soils, distributed within two distinct layers beneath the incinerator unit. The combined depth of the clay and overlying sandy layers was estimated to reach approximately 20-25 meters from the ground surface. To ensure the effectiveness of structural mitigation, a retaining wall must be designed to extend beyond this depth threshold. Numerical simulations using Slope/W software indicated that soil nailing techniques yielded safety factors ranging from 1.32 to 1.81 under static conditions and 1.22 to 1.43 under dynamic conditions. Predicted deformations ranged from 0.01 to 0.02 meters (static) and 0.02 to 0.03 meters (dynamic). These results suggest that soil nailing is a viable reinforcement method to stabilize slope movements, particularly during periods of high rainfall. Additional recommended mitigation strategies include the installation of surface and subsurface drainage systems to control water flow, constructing retaining structures to serve as physical barriers to soil movement, and using vegetative cover to enhance slope stability.
SOSIALISASI HASIL INVESTIGASI AIR BAWAH TANAH SEBAGAI UPAYA MENGATASI KEKERINGAN Pamungkas, Mauludi Ariesto; Susilo, Adi; Juwono, Alamsyah M.; Naba, Agus; Yudianto, Didik; Idmi, Mohammad Habibiy; Hanafi, Muhammad Gusti Alif Zuhry; Gumelar, Dito Ibrahim; Hasan, Muhammad Fathur Rouf
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 6 (2024): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i6.27233

Abstract

Abstrak: Ketika memasuki musim kemarau, beberapa wilayah di Kabupaten Malang mengalami kesulitan air untuk kebutuhan hidup sehari-hari, salah satunya Dusun Sumberwaluh, Desa Pringgodani, Kecamatan Bantur. Kegiatan ini bertujuan untuk meningkatkan pemahaman peserta kegiatan terkait potensi air tanah sebagai langkah awal untuk mengatasi kekeringan pada lokasi pengabdian. Metode pelaksanaan adalah sosialisasi, sedangkan mitra kegiatan yaitu Yayasan SEMAIN dan warga setempat. Kegiatan sosialisasi diikuti oleh 5 Dosen, 3 mahasiswa, 4 mitra dari yayasan SEMAIN, dan 57 mitra sekaligus peserta dari warga setempat. Evaluasi untuk mengukur pengetahuan peserta dilakukan melalui pertanyaan langsung sebanyak 3 pertanyaan. Indikator keberhasilan kegiatan ini adalah peserta memiliki pengetahuan tambahan terkait potensi sumber air tanah pada daerah mereka. Hasil yang dicapai yaitu peserta memperoleh pengetahuan baru, dimana mayoritas peserta mampu menjawab 2 dari 3 (66,6%) pertanyaan terkait materi sosialisasi yang diberikan. Secara ekonomi, kegiatan investigasi sumber air tanah menghabiskan biaya sekitar 30 juta, sedangkan pembuatan sumur bor sekitar 70 juta (total 100 juta). Biaya tersebut diberikan secara gratis kepada masyarakat setempat sebagai bentuk kepedulian terhadap sesama.Abstract: When entering the dry season, several areas in Malang Regency experience water shortages for daily needs, one of which is Dusun Sumberwaluh, Pringgodani Village, Bantur District. This activity aims to increase participants' understanding of groundwater potential as an initial step in overcoming drought at service locations. The implementation method is socialization, while the activity partners are the SEMAIN Foundation and local residents. The socialization activity was attended by 5 lecturers, 3 students, 4 partners from SEMAIN Foundation, and 57 partners and participants from local residents. Evaluation to measure participants' knowledge is carried out through 3 direct questions. The success indicator of this activity is that participants have additional knowledge regarding the potential of groundwater sources in their area. The results achieved were that participants gained new knowledge, where the majority of participants were able to answer 2 out of 3 (66.6%) questions related to the socialization material provided. Economically, groundwater source investigation activities cost around 30 million, while drilling wells cost around 70 million (total 100 million). These costs are provided free of charge to the local community as a form of concern for others. 
UPAYA PENINGKATAN KESADARAN DALAM MITIGASI BENCANA KEKERINGAN MENGGUNAKAN METODE RESISTIVITAS DAN OBSERVASI LAPANG Susilo, Adi; Juwono, Alamsyah M.; Naba, Agus; Pamungkas, Mauludi Ariesto; Yudianto, Didik; Muhardi, Muhardi; Idmi, Mohammad Habibiy; Ilham, Ilham
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 6 (2025): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i6.35813

Abstract

Abstrak: Pengabdian ini bertujuan mengedukasi masyarakat tentang upaya mitigasi terhadap bencana kekeringan di wilayah desa setempat sehingga meningkatkan softskill masyarakat dalam menghadapi potensi bencana alam tersebut serta hardskill dalam pengelolaan air bersih yang efisien. Metode yang digunakan yaitu metode resistivitas sounding atau VES (Vertical Eletric Sounding). Kegiatan pengabdian diikuti oleh Tim Pengabdian Teknik Geofisika Universitas Brawijaya sekitar 5 orang dengan profil sebagai ahli geofisika dan ahli geologo, Yayasan SEMAIN sekitar 10 orang dengan kemampuan dalam menyelaraskan hubungan para ahli dan warga serta membantu dalam penyuluhan air bersih dan warga setempat sebagai pelaku dalam kegiatan. Hasil pengabdian diwujudkan dalam bentuk peta persebaran air tanah yang dapat digunakan dalam acuan pengeboran sumber mata air. Pemberian materi berupa ceramah dan praktik umum secara langsung dan berkala sehingga dapat meningkatkan kesadaran akan pentingnya air bersih. Tingkat persente pemahaman masyarakat sekitar rata-rata 19.2% sebelum dilakukan pengabdian dan meningkat rata- rata menjadi 89% setelah dilakukan pengabdian. Hal ini dibuktikan dengan penggunaan air bersih yang lebih efisien dibanding sebelumnya seperti penampungan air hujan perubahan kebiasaan penggunaan air bersih.Abstract: This community service aims to educate the community about mitigation efforts against drought disasters in the local village area so as to improve the community's soft skills in dealing with potential natural disasters as well as hard skills in efficient clean water management. The method used is the resistivity sounding method or VES (Vertical Electric Sounding). The community service activity was attended by the Brawijaya University Geophysical Engineering Community Service Team of around 5 people with profiles as geophysicists and geologists, the SEMAIN Foundation of around 10 people with the ability to harmonize the relationship between experts and residents and assist in clean water counseling and local residents as actors in the activity. The results of the community service are manifested in the form of a groundwater distribution map that can be used as a reference for drilling springs. The provision of material in the form of lectures and general practices directly and periodically so as to increase awareness of the importance of clean water. The level of understanding of the surrounding community averaged 19.2% before the community service was carried out and increased to an average of 89% after the community service was carried out. This is evidenced by the use of clean water that is more efficient than before such as rainwater collection changes in clean water usage habits.
Co-Authors Adi Susilo Agung, P. A. Maha Agus Naba Aprilia, Faridha Eko Andi Suryo Gumelar, Dito Ibrahim Hanafi, Muhammad Gusti Alif Zuhry Hisyam, Farizky Ilham Ilham Juwono, Alamsyah M. Mauludi Ariesto Pamungkas Muhammad Fathur Rouf Hasan Muhardi Musta, Baba Susilo, Adi Sutan Haji, Alexander T. Yudianto, Didik