-
-
-
-
Honor
-
-
-
-
-
Contact
-
What is the bottom pumping alley?
Release time:
2022-11-02
Author:
Source:
What is the bottom pumping alley?
- What is the bottom pumping alley?
Bottom drainage roadway, also known as floor roadway, is located in the rock below the coal seam, floor roadway refers to the roadway arranged in the coal seam floor.
Bottom drainage roadway pre-pumping is one of the methods for comprehensive gas control of close-distance coal seam groups. Pre-pumping of bottom-pumping roadway: at the beginning of roadway development, a scientific and reasonable drilling design scheme is formulated to pre-pump the upper coal seam roadway in advance.
Key words:
What, roadway, coal seam, floor, layout, location, advance, rock formation, conduct
Previous Page
Next Page
Previous Page:
Next page:
