PENDUGAAN POTENSI AIR TANAH METODE GEOLISTRIK SCHLUMBERGER KEBUN DURIAN # PART 2 (SELESAI)

Summary

In this video, the team conducts a geoelectric survey to detect underground water sources, specifically focusing on deep water in an area known for water scarcity. The team, assisted by geophysical experts, measures the resistivity of the soil and rock layers, analyzing the data for potential water sources. The findings show differences in the depth and thickness of water-bearing layers between two locations. Ultimately, the team selects the first location, with the most promising results, to proceed with drilling. The video emphasizes the importance of precise measurements and technology for water sourcing in challenging conditions.

Takeaways

• 😀 The video discusses the process of water detection and geophysical measurements to locate underground water sources in a specific area.
• 😀 The team uses geoelectric measurements to assess the depth and quality of potential water sources, ensuring they don’t interfere with nearby community water supplies.
• 😀 Two locations are analyzed for water detection: the first location has a more complex layer structure, while the second has fewer layers.
• 😀 The geoelectric results show varying depths of water, with the first location providing a thicker water-bearing layer (around 38.33m) compared to the second location (32.19m).
• 😀 The measurement process includes using a water detector followed by geoelectric measurements, ensuring precise results for identifying suitable water sources.
• 😀 The team is concerned with securing deep water sources (rather than shallow ones) to avoid impacting nearby residents' water supplies.
• 😀 Geological layers identified include volcanic tuff, clay, sand, and breccia, which are essential for understanding water availability in the region.
• 😀 The video emphasizes the importance of calibrating equipment regularly (every year) to maintain the accuracy of the measurements.
• 😀 The final decision is to drill at the first location (GL1) based on its better water-bearing potential and thicker layers of suitable materials.
• 😀 Despite the complex geological conditions, the team expresses confidence that they will find a reliable water source at the selected location.
• 😀 The video concludes with a report on the final analysis, highlighting the specific parameters and recommendations for drilling to access water.

Q & A

What is the primary focus of the video script?

The primary focus of the video is the process of conducting geoelectrical measurements to detect deep groundwater sources on a plot of land, specifically aiming to identify suitable drilling locations.

Why was geoelectrical measurement used in this investigation?

Geoelectrical measurement was used to better detect deep groundwater sources, ensuring accuracy and precision in identifying water points for drilling, as the area is known to be prone to water scarcity issues.

What is the significance of the two measurement points (GL1 and GL2)?

The two measurement points, GL1 and GL2, represent different areas on the land where geoelectrical measurements were taken. The results of these measurements were compared to determine the most suitable location for drilling.

How does the depth of groundwater vary between the two locations?

At GL1, the depth of the water source is estimated to be between 24.86 meters and 63.19 meters, with a water thickness of approximately 38.33 meters. At GL2, the depth is between 30.27 meters and 62.46 meters, with a water thickness of about 32.19 meters.

What geological layers were identified in the land based on the measurements?

The geological layers identified include volcanic rock, clay, soft tuff, sand, and brecciated rock. These layers were critical for determining the water source and its depth.

What were the findings regarding the quality and thickness of water sources?

The measurements indicated that the first location (GL1) had a larger thickness of water-bearing layers, making it a more promising site for drilling compared to the second location (GL2).

How was the information from geoelectrical measurements used in making the final decision?

The data from GL1 and GL2 were used to evaluate which location had the thicker and more reliable water-bearing layers. Ultimately, GL1 was chosen due to its larger water thickness and more favorable conditions.

What role did the water detector play in the investigation?

The water detector was initially used for water detection; however, due to the complexity of detecting deep groundwater, the geoelectrical measurements were employed to obtain more accurate and reliable results.

Why is it important to avoid using shallow water sources in this project?

Shallow water sources were avoided to ensure the project does not disturb or compete with local water sources that are already in use by the surrounding community. The goal was to tap into deeper, more sustainable water sources.

What was the final recommendation based on the findings of the measurements?

The final recommendation was to proceed with drilling at GL1, as it was found to have the most suitable and consistent water source, with a thicker water-bearing layer, making it the best choice for the project.