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GUIDELINES FOR THE CONTROL AND MONITORING OF METHANE GAS ON CONTINUOUS MINING OPERATIONS
+ Taylor CD; Chilton JE; and Goodman GVR
+ EXECUTIVE SUMMARY
+ BACKGROUND
+ + USBM Research 1950 to 1969
+ + USBM Research 1970 to 1995
+ + NIOSH Research 1996 to Present
+ TEST FACILITIES
+ + Introduction
+ + Ventilation Test Gallery
+ + Model Mining Machine
+ + Model Roof Bolter
+ + Methane Distribution in the Test Gallery
+ + Methane Monitors
+ + Airflow Monitors
+ + Data Acquisition and Analysis
+ + Summary
+ MOVING AIR TO THE MINING FACE
+ + Introduction
+ + Maintaining Curtain/Tubing Setback Distance
+ + Extensible Systems—Jet Fans
+ + Effects of Airflow Velocity on Face Methane Levels
+ + Blowing Curtain and Tubing
+ + Estimating the Ventilation Flow Quantity Reaching the Face
+ + Airflow Between the Mouth of the Blowing Curtain and the Face
+ + Measuring Airflow at the Face
+ + Effect of Airflow on Methane Concentrations
+ + Summary
+ EFFECT OF SCRUBBER OPERATION ON FACE AIRFLOW AND METHANE CONCENTRATIONS
+ + Introduction
+ + Scrubber Tests in Test Gallery
+ + Scrubber and Intake Flow, Balanced and Unbalanced Flows
+ + Effect of Scrubber Flow on Intake Flow
+ + Direction of Scrubber Exhaust, Effect on Intake Flow and Recirculation
+ + Scrubbers Used With Exhausting Face Ventilation
+ + Effect of Scrubber Use on Methane Levels Above the Machine
+ + Summary
+ EFFECT OF WATER SPRAYS ON FACE AIRFLOW AND METHANE CONCENTRATIONS
+ + Introduction
+ + Effect of Nozzle Direction
+ + Effect of Water Sprays on Intake Airflow
+ + Effect of Water Sprays on Airflow at the Face
+ + Effect of Sprays on Methane Distributions
+ + Summary
+ METHANE MONITORING
+ + Introduction
+ + Methanometers, Catalytic Heat of Combustion Sensors
+ + Methanometers, Infrared Sensors
+ + Methanometers, Use in Underground Coal Mines
+ + Measuring Methanometer Response Times
+ + Methane Sampling Strategy, Sampling on the Mining Machine
+ + Summary
+ MEASURING GAS LEVELS OUTBY THE FACE
+ + Introduction
+ + Person-Wearable Methane Monitors
+ + Cap Lamp-Mounted Personal Monitor
+ + Summary
+ EVALUATING METHANE LEVELS IN AREAS OUTBY THE MINING FACE
+ + Introduction
+ + Underground Tests
+ + Summary
+ TECHNIQUES FOR MEASURING AIRFLOW
+ + Introduction
+ + Ultrasonic Anemometers
+ + Evaluating Performance of Ultrasonic Anemometers
+ + Low Air Velocity Measurements
+ + Comparing Instrument Airflow Readings in the Ventilation Test Gallery
+ + Comparison of One-, Two-, and Three-Axis Anemometers Behind the Blowing Curtain
+ + Instrument Orientation
+ + Flow Readings with One-, Two-, and Three- Axis Anemometers at the Mining Face
+ + Summary
+ METHANE MONITORING DURING ROOF BOLTING
+ + Introduction
+ + Laboratory Tests
+ + Summary
+ PRACTICAL GUIDELINES FOR THE CONTROL AND MONITORING OF METHANE GAS ON CONTINUOUS MINING OPERATIONS
+ REFERENCES
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