What is the purpose of a "branchline" in detonating cord blasting?

• A. It provides the main connection for detonation
• B. It is the detonating cord to which downlines are attached
• C. It connects multiple branching charges for optimal impact
• D. It serves as a standalone charge for smaller blasts

Answer: (B)

The purpose of a "branchline" in detonating cord blasting is to serve as the detonating cord to which downlines are attached. In blasting operations, a branchline is an integral component that allows for the safe and effective transmission of the detonation signal from the mainline to individual secondary charges or downlines. This setup ensures that the blast is executed in a coordinated manner, enhancing the efficiency of the explosive charge deployment and achieving the desired results in the mining or construction environment.

Understanding the function of the branchline is crucial for properly designing blast patterns and ensuring safety in operations, as it directly influences the timing and sequence of the explosions.