Question

Wells that are excavated pits through the geological formation, requiring lining only for a couple of meters from the top, are usually found in:

• A. Alluvial Formation
• B. Rocky Formation
• C. Fracture Zones
• D. Fault Zones

Hint:

Wells in rocky formations require minimal lining as the rock structure itself supports the excavation.

Answer 1

The Correct Option is B

Step 1: Understanding Well Construction
Wells are classified based on the geological formation in which they are constructed.
Step 2: Evaluating Options
- Alluvial Formation: Requires full lining due to unstable loose sediments. - Rocky Formation: Stable, requiring lining only at the top, making it the correct answer. - Fracture Zones: Require complete reinforcement. - Fault Zones: Prone to collapse, requiring full lining.