Beginilah Proses Peledakan Batuan Di Tambang Terbuka Dan Bawah Tanah

Summary

This video provides an in-depth look at the blasting process in mining operations, emphasizing safety protocols and precise procedures. The process begins with mapping the blast points, followed by drilling to create blast holes. It covers the importance of optimal hole size, proper placement of explosives, and methods to ensure the safety of the workers and surrounding area. The sequence also highlights the roles of various personnel and detailed checks to prevent mishaps. The video explains how blasting techniques are adapted for both open-pit and underground mining, with a focus on minimizing risks and improving operational efficiency.

Takeaways

• 😀 Blasting in mining is a process to break down massive rocks into smaller fragments for easier handling.
• 😀 The blasting process requires careful planning, including mapping the detonation points before starting.
• 😀 Drilling is an essential step, where holes are made in the rock using different patterns to ensure optimal energy distribution during the blast.
• 😀 The diameter and depth of the blast holes must be precisely measured to ensure effective fragmentation of the rocks.
• 😀 Safety is a top priority; qualified personnel must be assigned, and proper warning signs should be placed around the blasting area.
• 😀 Explosives need to be transported and stored safely, and an escort must accompany them during mobilization to and from the storage facility.
• 😀 The charging process involves placing explosives into the drilled holes, ensuring the holes are properly sealed to prevent accidents like flyrock.
• 😀 Detonators are carefully connected and tested to ensure they function correctly and that no misfires occur.
• 😀 Post-blast inspections are conducted to check for unexploded charges, and any issues must be addressed before the mining operation resumes.
• 😀 In underground mining, the blasting procedure is similar but adapted for confined spaces, requiring special ventilation and safety measures.

Q & A

What is the main goal of blasting in mining operations?

The main goal of blasting in mining is to break rock into smaller fragments, making it easier to handle and process the material for subsequent operations.

Why is blasting required in mining, particularly for hard rock?

Blasting is needed because excavation tools like excavators cannot dig through hard rock, making blasting an essential process for breaking the rock into manageable sizes.

What are the key steps before blasting can take place?

Before blasting, key steps include mapping the blast site, drilling holes for the explosives, and following safety protocols to ensure the area is secure.

What is the purpose of the drilling process in blasting?

Drilling creates holes in the rock where explosives will be placed. The spacing and patterns of the drilled holes are crucial for optimal energy distribution during the blast.

What is the importance of hole diameter in blasting operations?

The hole diameter is critical because if it's too small, there won't be enough pressure for an effective blast, and if it's too large, the blast may not create optimal fragmentation.

What procedures are involved after drilling the blast holes?

After drilling, the next steps include loading the explosives into the holes (charging), sealing the holes to prevent loss of energy (stemming), and preparing detonators for the blast.

How are detonators used in blasting?

Detonators are used to trigger the explosives. They are arranged in a specific pattern according to the blasting design, and the electrical or non-electrical detonators ensure controlled timing of the blast.

What happens if a blast fails to detonate as planned?

If a blast fails to detonate, it’s called a 'missfire.' In such cases, the cause must be identified and corrected before the area is re-blasted to ensure safety and effectiveness.

What steps are taken to secure the area during blasting operations?

Before the blast, the area is secured by placing warning signs, ensuring that only qualified personnel are present, and coordinating with road blockers and other safety personnel to ensure no one is in harm's way.

How are post-blast procedures handled?

After a blast, the area is inspected for any failed detonations (missfires). If everything is secure, the area is cleared of dust and debris, and excavation can resume. If there’s excess explosive material, it is returned to the storage facility.