SurfMin: blasting vibrations

OSM Library Number: 515 Date to NTIS: 11/17/89

NTIS Accession No: PB90-153131/AS NTIS List Price: 23.00

CFR Citation: 30 CFR 816.67

Title of Report:

INVESTIGATION OF BLASTING VIBRATIONS ABOVE ABANDONED UNDERGROUND COAL MINES

(1987). 126 pp.

Performing Organization Name and Address:

USDOI-Bureau of Mines, Minneapolis, MN 55402

Type of Report: Final Report

Abstract:

Study of 9 Indiana surface coal mine sites at 8 mines to determine if presence

of near-surface underground abandoned workings resulted in generation of adverse

long-duration/low-frequency blast vibrations. Six of 9 sites have underlying

mine workings; 2 had thick layers of low-velocity unconsolidated surface

material. Researchers used extended seismic arrays to identify vibration

characteristics generated within a few 1Os of feet of blasts & modified by

propagating medium at distance over 1 mile. Production and specially fired

single-charge blasts allowed determination of natural ground frequency.

Keywords:

BLASTING VIBRATIONS

UNDERGROUND COAL MINE SUBSIDENCE

Author(s):

Crum, Steven V.

Kopp, John W.

Otterness, Rolfe E.

Siskind, David E.

OSM Library Number: 569 Date to NTIS: 05/31/90

NTIS Accession No: PB90-225665/AS NTIS List Price: 23.00

CFR Citation No: 30 CFR 816.61-816.68

Title of Report:

ASSESSMENT OF BLASTING VIBRATIONS FROM SURFACE MINE BLASTING IN PEABODY'S

UNIVERSAL MINE, BLANFORD IN (1985). 89 pp.

Performing Organization Name and Address:

U.S. Bureau of Mines, Twin Cities Research Center, MN

Type of Report: Final Report

Abstract:

Reports assess blast vibrations in and around Blanford Indiana resulting from

blasting in nearby Peabody Universal Coal Co. and analyses of blasting logs and

data during 4/85. Vibration amplitudes are large relative to other measurements

at these scaled distances. Vibration characteristics are not typical of

measurements made elsewhere, and likely cause of high level and surface

wave-dominated blast vibration is geologically structured. Either low-velocity

natural layering or extensive underground workings provide strong seismic wave

reflection. Raleigh and Love Wave is discussed in report.

Keywords:

BLASTING VIBRATIONS

UNDERGROUND COAL MINE SUBSIDENCE

Author(s):

Siskind, David E., (U.S. Dept. of the Interior)