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All Journal Teras Jurnal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Mestaka: Jurnal Pengabdian Kepada Masyarakat
Purwadi, Ofik Taupik
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Pembuatan Pompa Air Tanpa Mesin Sebagai Sarana Irigasi Di Dataran Tinggi Pekon Bumi Ratu Hendri, John; Mulyono, Mulyono; Khotimah, Siti Nurul; Purwadi, Ofik Taupik; Bahri, Syaiful; Laila, Aspita; Ambarwati, Yuli
MESTAKA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 6 (2024): Desember 2024
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v3i6.532

Abstract

Bumi Ratu Village is located on the edge of the Way Sekampung dam, with the position of the dam lower than the village land. This causes the agricultural land and rice fields of Bumi Ratu Village to have difficulty getting water, because the irrigation flow cannot reach a higher position. This problem is an important concern because it greatly affects the planting season and harvest from agriculture. The purpose of this service is to overcome the problem of irrigation of land that has a geographical location above the river level through appropriate technology in the form of a water pump without a machine (hydram pump). The method of this activity consists of several steps, namely 1) Determination of location points that have water sources, 2) Making hydram pump equipment, 3) Socialization, 4) Hydram Pump Trial and 4) Evaluation. This community service activity is expected to be an effective solution in overcoming irrigation problems on their agricultural land. The results of this community service activity show that hydram pumps are an appropriate solution to the irrigation problems that occur in Bumi Ratu Pagelaran Village. Through the use of this hydram pump, farmers and landowners are expected to optimize land irrigation around the highland area so that crop yields can be as expected.
Analisis Oceanografi Untuk Penanganan Abrasi Pantai Bengkulu Purwadi, Ofik Taupik; Rahmadani, Eria Zundi
Teras Jurnal : Jurnal Teknik Sipil Vol. 15 No. 2 (2025): Teras Jurnal (September)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v15i2.1268

Abstract

Abstrak   Permasalahan abrasi pantai di beberapa wilayah yang ada di Indonesia menjadi salah satu fenomena alam yang secara alami terjadi, fenomena abrasi pantai yang terjadi di sepanjang wilayah pesisir Bengkulu, khususnya pada ruas jalan negara (Bintunan - Lais). Metode yang digunakan meliputi survei in situ dan wawancara dengan masyarakat setempat untuk mengumpulkan data mengenai kejadian abrasi. Hasil penelitian menunjukkan bahwa arus laut dominan bergerak ke arah Selatan Tenggara dengan kecepatan rata-rata 0,81 m/s, yang berkontribusi pada proses transportasi sedimen. Tinggi gelombang yang terukur mencapai 2,3 m pada saat pasang, yang mempercepat proses abrasi. Selain itu, analisis sedimentasi menunjukkan bahwa jenis partikel dominan adalah pasir halus, dengan laju sedimentasi berkisar antara 25,16-34,25 mg/cm³/det. Penelitian ini menekankan pentingnya pengelolaan pantai yang berkelanjutan untuk mengurangi dampak abrasi dan melindungi infrastruktur yang ada.   Kata kunci: Abrasi, Oceanografi, Pesisir Bengkulu     Abstract   The problem of coastal abrasion in several regions in Indonesia is one of the natural phenomena that naturally occurs, the phenomenon of coastal abrasion that occurs along the coastal areas of Bengkulu, especially on the state road (Bintunan - Lais). The methods used include in situ surveys and interviews with local communities to collect data on abrasion events. The results showed that the dominant ocean currents moved towards South-Southeast with an average speed of 0,81 m/s, which contributed to the sediment transportation process. The measured wave height reaches 2,3 m at high tide, which accelerates the abrasion process. In addition, sedimentation analysis showed that the dominant particle type was fine sand, with sedimentation rates ranging from 25,16-34,25 mg/cm³/det. This research emphasizes the importance of sustainable beach management to reduce the impact of abrasion and protect existing infrastructure.   Keywords: Abrasion, Oceanography, Coastal Bengkulu
Sustainability Analysis of Water Availability in Way Sekampung Dam using Vensim Dynamic Program Murdiagatma, Sefrinta Sasma; Wahono, Endro Prasetyo; Kusumastuti, Dyah Indriana; Purwadi, Ofik Taupik; Zakaria, Ahmad
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.10579

Abstract

The sustainability of dam operations needs to be reviewed in terms of water availability, in order to maintain the sustainability of water demand in all sectors in the coming years. This study aims to analyze of water availability of the Way Sekampung Dam reservoir according to its needs using one of the applications of the dynamic program, Vensim. The study used data-driven scenario simulations on the Vensim application, to analyze key factors including available inflows, required outflows, storage capacity of the dam and plans to supply raw water over a 25-year period. The results show that the dam can supply raw water for Bandar Lampung, Beranti, Pringsewu and Metro City with a total capacity of 2,737 liters per second and support water needs for potential irrigation of 76,006 hectares. Optimization of the dam's storage operation can be achieved, with a target reliability of 100% occurring in 2027, the year when the dam's storage condition reaches its optimal level at an elevation of +125.23 meters. To meet downstream water demand, the dam's storage capacity must be maintained at an elevation of +124.0 meters or higher, with a volume of 68,060,000 m³ and an inundation area of 5,020.8 km2. If the water storage falls below this elevation, it will be necessary to update the water allocation policy, adjust management regulations, appropriate management strategies, including periodic updating of the reservoir operation rules and implementation of a flexible water release schedule, to ensure continuous water availability at the Way Sekampung Dam reservoir.
Co-Authors Ahmad Zakaria Ambarwati, Yuli Aspita Laila Dyah Indriana Kusumastuti Endro Prasetyo Wahono John Hendri Mulyono Mulyono Murdiagatma, Sefrinta Sasma Rahmadani, Eria Zundi Siti Nurul Khotimah SYAIFUL BAHRI