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All Journal Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Geosains West Science
Harnani Harnani
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Education Physics Social Sciences Other

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Analisis Hubungan Kadar Air terhadap Kuat Tekan Bebas Tanah di Daerah Danau Rayo, Kabupaten Musi Rawas Utara, Sumatera Selatan Salsabila Az Zahra; Harnani Harnani
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 4 (2025): November
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i4.1482

Abstract

Daerah penelitian terletak di Danau Rayo yang memiliki tujuan untuk dapat mengetahui bagaimana kadar air berpengaruh terhadap nilai kuat tekan bebas (Qu). Pengujian dilakukan terhadap tujuh sampel tanah yang diambil secara undisturbed menggunakan bor tangan di lokasi penelitian. Setiap sampel diuji untuk menentukan kadar air alami dan nilai kuat tekan bebasnya di laboratorium. Data hasil pengujian kemudian dianalisis menggunakan regresi linier sederhana untuk melihat hubungan antara kadar air dan kuat tekan bebas. Hasil analisis menunjukkan persamaan regresi y=-0,8694x + 63,944 dengan nilai koefisien determinasi R2=0,3642, yang mengindikasikan bahwa kadar air berpengaruh sebesar 36,42% terhadap variasi kuat tekan bebas tanah. Nilai koefisien regresi negatif mengindikasikan bahwa tiap kenaikan persentase kadar air, nilai kuat tekan bebas cenderung mengalami penurunan. Hal tersebut dipengaruhi oleh meningkatnya kandungan air dalam pori-pori tanah yang mengurangi gaya kohesi antar partikel. Secara keseluruhan, hasil penelitian ini menunjukkan bahwa kadar air merupakan faktor kunci yang berperan penting dalam menentukan kekuatan tanah. Perubahan kadar air dapat secara signifikan memengaruhi perilaku mekanik tanah, khususnya terhadap nilai kuat tekan bebas (Qu). Oleh karena itu, pengendalian dan pemantauan kadar air perlu diperhatikan dalam analisis kestabilan tanah serta dalam perencanaan dan pelaksanaan konstruksi, guna memastikan keamanan dan kestabilan struktur yang dibangun di atasnya.
Penilaian Kelayakan Air Sebagai Sumber Air Bersih dan Air Minum Berdasarkan Water Quality Index (WQI) Titra Hayyu Al Ghaitsi; Harnani Harnani
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 4 (2025): November
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i4.1484

Abstract

Water is an important resource for human life and activities. The decline in water quality due to domestic activities, agriculture, and the existence of landfills has become an environmental problem that need serious attention. This study aims to assess water quality in Palemraya Village, Ogan ilir Regency, using the Water Quality Index (WQI) method with a Weighted Arithmetic Index approach. Samples were taken at four points representing surface water and groundwater sources. Physical, chemical, and biological parameters were tested in the laboratory in accordance with Permenkes No. 2 of 2023 standards. The results showed that the WQI values ranged from 8,96 to 83,11. Location S1, which is close to the landfill, had very poor water quality, while location P2 showed good water quality that could still be used after simple treatment. The main factors causing the decline in water quality were low pH and microbiological contamination due to domestic activities and leachate seepage. This study is expected to serve as a basis for efforts to manage sustainable clean water sources for the local community
Groundwater Quality and Sanitation Education as an Effort to Support the Sustainability of the Community-Based Drinking Water System (PAM-RT) in Burai Village: Edukasi Kualitas Air Tanah dan Sanitasi sebagai Upaya Mendukung Keberlanjutan PAM-RT di Desa Burai Yogie Zulkurnia Rochmana; Dede Nurohim; M Alfath Salvano Salni; Sundus Ghaida Noor Azizah; Budhi Setiawan; Harnani Harnani; Idarwati Idarwati; Edy Sutriyono; Ika Juliantina; Muhammad Akmal Dwi Antoro
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 10 No. 4 (2026): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v10i4.31003

Abstract

Low community literacy on groundwater quality and inadequate sanitation practices pose significant risks to the sustainability of the community-based drinking water system (PAM-RT) in Burai Village. The activity aimed to improve community understanding and management capacity regarding water quality and sanitation. Implementation included socialization, technical training, field observation, and evaluation using pre-test and post-test questionnaires. The results indicated a significant increase in participants’ knowledge, with scores rising from 78.99% to 90.91%. The N-Gain value of 0.567 (56.7%) categorized the intervention as moderately effective. These findings demonstrate that participatory educational approaches can enhance community awareness, strengthen local management capacity, and provide a scalable model for improving rural water management and sustaining community-based water supply systems
Analisis Geomorfologi Daerah Cikatomas dan Sekitarnya, Kabupaten Tasikmalaya, Provinsi Jawa Barat Audia Paradise; Harnani Harnani; Dwi Vina Febrim
Jurnal Geosains West Science Vol 4 No 03 (2023): Jurnal Geosains West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jgws.v4i03.3467

Abstract

Penelitian ini membahas geomorfologi daerah Cikatomas dan sekitarnya, Kabupaten Tasikmalaya, Provinsi Jawa Barat, dengan tujuan untuk mengidentifikasi satuan geomorfik berdasarkan aspek morfografi, morfometri, dan morfogenesa melalui observasi lapangan dan analisis berbasis Sistem Informasi Geografis (SIG) menggunakan data Digital Elevation Model (DEM). Hasil penelitian menunjukkan bahwa daerah penelitian didominasi oleh morfologi perbukitan dengan elevasi berkisar 50-500 meter di atas permukaan laut. Analisis morfometri menunjukkan dominasi lereng curam hingga sangat curam yang mencerminkan relief tinggi dan proses geomorfik aktif. Pola aliran pada daerah penelitian terbagi menjadi dendritik dan sub-dendritik yang menunjukkan litologi relatif homogen dan sedikit kontrol struktur. Sungai Ciwulan pada daerah penelitian menunjukkan pola meander dengan nilai indeks sinuosity sebesar 1,7175. Berdasarkan analisis geomorfologi, daerah penelitian terbagi menjadi satuan Perbukitan Karst (PK), Perbukitan Denudasional Tererosi Tinggi (PDTT), Perbukitan Denudasional Tererosi Sedang (PDTS), serta bentuk lahan fluvial berupa Channel Irregular Meander (CIM), dan dataran banjir.
Co-Authors Audia Paradise Budhi Setiawan Dede Nurohim Dwi Vina Febrim Edy Sutriyono Idarwati Idarwati Ika Juliantina M Alfath Salvano Salni Muhammad Akmal Dwi Antoro Salsabila Az Zahra Sundus Ghaida Noor Azizah Titra Hayyu Al Ghaitsi Yogie Zulkurnia Rochmana