HASIL PENELITIAN RANGKAIAN KEGIATAN EKSPLORASI TINJAU : PEMBORAN PROYEK SEBAMBAN PT. JB

Summary

In this video, Rahman, a student from SMK Negeri 1 Balikpapan, shares his hands-on experience during his internship at PT Johonlin Baratama, focusing on the drilling process. He walks viewers through the steps of drilling, from determining drilling points using site maps to coordinating with drillers, ensuring accurate sampling, and addressing any obstacles that may arise. Rahman also highlights key geological concepts such as core sample description, the difference between drilling methods, and how drillers ensure a smooth operation. The video offers an insightful look into the practical aspects of mining and geology in the field.

Takeaways

• 😀 The speaker, Rahman, is a student at SMK Negeri 1 Balikpapan, majoring in Geology, and currently undergoing an internship at PT Johonlin Baratama.
• 😀 Rahman discusses the drilling process and explains the steps involved in drilling, from identifying the drilling points to taking rock samples.
• 😀 The first step in drilling is determining the drilling point using a drilling plan map, usually prepared by a pit engineer. Rahman is assigned to drill at point ISF011.
• 😀 Once the point is identified, Rahman places a red tape to mark the location, ensuring it is clear for the drilling team.
• 😀 The drilling team uses equipment such as excavators to move the drilling equipment to the marked point, followed by land clearing to make space for the drill.
• 😀 After the land clearing, the drilling team prepares the necessary equipment, including pumps and pipes, to begin the drilling process.
• 😀 Rahman demonstrates how rock core samples are collected and described, noting the different types of materials like topsoil, sand, and coal at various depths.
• 😀 Descriptions of the rock samples include details such as color, texture, and composition, which are essential for geological analysis.
• 😀 The method of drilling is explained, highlighting the difference between Open H and Touch Coring methods, with Touch Coring providing more intact samples, while Open H creates fragmented ones.
• 😀 After several days of drilling, Rahman reaches the target depth and completes the drilling process, marking the successful end of the operation.

Q & A

What is the main focus of the video script?

The main focus of the video is the experience of a student, Rahman, during his fieldwork practice at PT Jil Barutama, specifically detailing the drilling process and sampling at a mining site.

What is the first step in determining a drilling location?

The first step is to have a drilling plan map, which is usually prepared by the Pit Engineer. The map indicates various drilling points, and the geologist needs to identify and visit the correct drilling location.

How is the drilling location marked once identified?

The drilling location is marked using a red ribbon, which helps to visually identify the exact spot for drilling.

What should be done if the drilling location is unsuitable?

If the drilling location is unsuitable, for example, due to swampy conditions or other obstacles, the drilling site can be moved within a 50-meter radius to a more appropriate location.

What equipment is used to move the drilling rig?

An excavator is typically used to move the drilling rig from one location to another during the drilling process.

What is the purpose of land clearing before drilling?

Land clearing is done to ensure that the drilling equipment can be safely and effectively set up and operated without obstructions.

What are the key steps in preparing for drilling once the land is cleared?

Once the land is cleared, the drilling equipment, such as the drilling rig and water circulation pump, is set up. The crew prepares for the drilling operation by ensuring all equipment is in place.

How is the geological sample taken during drilling described?

The geological sample is described based on the type of material found at specific depths, such as topsoil, soil, sand, and coal, with observations on their appearance and texture.

What is the difference between Open Hole (Open H) and Touch Coring methods?

Open Hole (Open H) produces a powdered or broken sample, while Touch Coring results in a more intact, continuous sample of the rock or coal, which provides better quality data.

Why is Touch Coring preferred over Open Hole for coal sampling?

Touch Coring is preferred because it produces longer, more intact coal samples, providing more accurate data. Open Hole methods, while quicker, result in fragmented samples that can be less reliable for analysis.