Geology Reference
In-Depth Information
Fire
triangle
Excavation
Burnout control
Fuel
Figure 16.5.1. Fire triangle with fuel removal, oxygen exclusion, and heat reduction fire-control methods. From
Kim and Chaiken 1993, p. 24.
At Calamity Hollow, exhaust control was maintained over an underground area of about 2 acres which encom-
passed the fire zones. Over 102 days of fan operation, an estimated 1100 tons of coal were burned, producing
exhaust gases at an average temperature of 600°C and thermal power level of 3.2MW. The total thermal energy, if
converted to electricity through a small mobile steam turbine/generator system, could have produced 14
18 million
kwh of electricity, about 20 times more energy than that required to operate the Burnout Control system.
-
During the course of the mine-fire field trial, slow subsidence and ground fracture did occur, but did not affect the
burnout process itself. Surface disturbances were handled by constructing additional footings for equipment
Figure 16.5.2. Burnout Control system as designed for the Calamity Hollow mine-fire project. From Irani et al.
1983, p. 13.
 
Search WWH ::




Custom Search