Question

The underground road way driven through stone to connect two or more coal seams is known as

• A. Tunnel
• B. Gallery
• C. Cross-cut
• D. Cross measure drift

Hint:

Break down the term "Cross Measure Drift":
- Drift is a horizontal or near-horizontal mine opening.
- Measure refers to the rock strata or layers.
- Cross means it is driven across the strata, not along them (like a roadway in a seam).

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
We need to identify the specific mining term for a roadway that is driven through non-coal rock strata to connect different coal seams.

Step 2: Detailed Explanation:
Let's define the terms for underground roadways:
-

Gallery (or Roadway, Heading): A general term for a horizontal or near-horizontal underground passage, typically driven within the coal seam itself.
-

Cross-cut: A passage driven between two parallel galleries within the same coal seam, often for ventilation or transport.
-

Tunnel: A general civil engineering term for an underground passage.
In mining, it's sometimes used for main access ways from the surface, but a more specific term is usually preferred.
-

Cross Measure Drift (or Drivage): This is the specific term for a roadway driven through the "measures" or rock strata that lie between coal seams.
Its purpose is to "cross" these strata to connect workings in one seam to another, either at a different level or in a different area.
The key parts of the definition are "driven through stone" (cross measure) and "to connect two or more coal seams".

Step 3: Final Answer:
An underground roadway driven through rock to connect different coal seams is known as a cross measure drift.
This corresponds to option (D).