Conventional drilling and blasting and Tunnel Boring Machines (TBMs) are two distinct tunneling methods, each with its advantages and limitations. Let's delve into the comparison to understand the differences between these two approaches:
Conventional Drilling and Blasting:
Advantages:
1. Versatility: Conventional drilling and blasting can be used in various geological conditions, including hard rock, soft rock, and mixed ground formations.
2. Cost-Effective: In some cases, drilling and blasting can be a more cost-effective option for shorter tunnels or when suitable rock formations are available.
3. Precise Alignment: This method allows engineers to achieve precise tunnel alignment and accommodate changes in the tunnel path during construction.
4. Suitable for Irregular Cross-Sections: Conventional methods can handle tunnels with irregular shapes and varying cross-sections.
Limitations:
1. Safety Risks: Drillin....
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