Refinement and evaluation of basic longwall dust-control techniques. Twenty-eighth monthly technical letter report, August 1984

Technical Report · Thu Sep 06 04:00:00 EDT 1984

OSTI ID:6849525

Kost, J A

The objective is to evaluate the effectiveness of available dust-control technology for double-drum shearer longwall sections. A preliminary visit was made to Harris No. 2 Mine, Eastern Associated Coal Corporation, on August 9, 1984, to assess the suitability of the longwall panel and shearer drums for a comparison of the dust-control effectiveness of Thru-flush bits and pick-face-flushing vane-mounted sprays. The section and drums were found acceptable and sampling began August 15, 1984. The sampling program consisted of two distinct test periods for each spray system (A-B-A-B) and was completed on August 28, 1984. A total of 17 cutting passes was sampled with the Thru-flush bits and 19 cutting passes were sampled with the vane sprays. Preliminery analysis of the data has begun. For the first test period with Thru-flush bits, the average perpass dust levels for H ..-->.. T cuts at the shearer and tailgate sampling locations were 5.4 mg/m/sup 3/ and 7.9 mg/m/sup 3/, respectively. The average water flow to the shearer was 42.4 gpm at a water pressure of 225 psi, as measured with the BCRNL water meter installed in the shearer line just inby the water filter at the stageloader. The water pressure at the drum spray nozzle was checked and found to be 45 psi, with all shearer water sprays operating.

• Research Organization: Bituminous Coal Research, Inc., Monroeville, PA (USA). National Lab.
• DOE Contract Number: AI01-81FE00016
• OSTI ID: 6849525
• Report Number(s): DOE/FE/00016-T56; ON: DE84016959
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
COAL MINING
CONTROL
DATA
DUSTS
EXPERIMENTAL DATA
FIELD TESTS
INFORMATION
LONGWALL MINING
MINING
NUMERICAL DATA
SPRAYS
TESTING
UNDERGROUND MINING