Identifikasi Kestabilan Tanggul Waduk Desa Kemuja Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner

Abstract

Kemuja Village Reservoir is one of the reservoirs located in Kemuja Village, West Mendo District, Bangka Regency, which was built in 2015. On the sides of the Kemuja Village Reservoir, there are embankments that are used to prevent flooding of rice fields. Based on the initial survey, the height of the embankment from the ground is ±2.6 m and the water level is ±1 m above the surface. This study aims to identify the stability of the Kemuja Village reservoir embankment based on 2D modeling using the Wenner configuration resistivity geoelectric method with a spacing of 8 m between electrodes. Based on 2D modeling, the Kemuja Village reservoir embankment has good stability on all tracks, except on track 1 at a depth of 0 m - 1 m with a measurement distance of 10 m - 14 m, track 2 at a depth of 0 m - 1 m with a measurement distance of 36 m - 40 m, track 3 at a depth of 0.5 m - 2 m with a measurement distance of 6 m - 8 m; 0 m - 1.5 m with a measurement distance of 12 m - 16 m and 0 m - 2 m with a measurement distance of 28 m - 30 m, traverse 4 at a depth of 0 m - 1 m with a measurement distance of 8 m - 10 m and 0 m - 2 m with a measurement distance of 44 m - 48 m.The dam of  Kemuja Village, constructed in 2015, is located in Kemuja Village, West Mendo District, Bangka Regency. The reservoir is surrounded by embankments designed to prevent flooding in the surrounding rice fields. An initial survey indicated that the embankments have an average height of approximately 2.6 meters from the ground surface, with a water level of around 1 meter above the surface. This study aims to assess the stability of the reservoir embankments through 2D modeling using the Wenner configuration resistivity geoelectric method, with an electrode spacing of 8 meters. The results indicate that the embankments exhibit overall structural stability across most sections. However, areas of potential instability were identified in specific locations, including Track 1 at depths of 0–1 m with a measurement range of 10–14 m, Track 2 at depths of 0–1 m within 36–40 m, Track 3 at depths of 0.5–2 m within 6–8 m, 0–1.5 m within 12–16 m, and 0–2 m within 28–30 m, as well as Track 4 at depths of 0–1 m within 8–10 m and 0–2 m within 44–48 m. These findings provide valuable insights into the structural integrity of the embankments and can inform future maintenance and reinforcement efforts.