Blasting for abandoned-mine land reclamation (closure of individual subsidence features and erratic, undocumented underground coal-mine workings). Final report

Technical Report · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5788957

Workman, J L; Thompson, J

The study has examined the feasibility of blasting for mitigating various abandoned mine land features on AML sites. The investigation included extensive field trial blasts at sites in North Dakota and Montana. A blasting technique was used that was based on spherical cratering concepts. At the Beulah, North Dakota site thirteen individual vertical openings (sinkholes) were blasted with the intent to fill the voids. The blasts were designed to displace material laterally into the void. Good success was had in filling the sinkholes. At the White site in Montana erratic underground rooms with no available documentation were collapsed. An adit leading into the mine was also blasted. Both individual room blasting and area pattern blasting were studied. A total of eight blasts were fired on the one acre area. Exploration requirements and costs were found to be extensive.

• Research Organization: Calder and Workman, Inc., Washburn, ND (USA)
• OSTI ID: 5788957
• Report Number(s): PB-91-169847/XAB; CNN: J0289004
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540250 -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
ABANDONED SHAFTS
BACKFILLING
COAL MINES
COMMINUTION
COST
DESIGN
DEVELOPED COUNTRIES
EXPLOSIVE FRACTURING
FEASIBILITY STUDIES
FEDERAL REGION VIII
FIELD TESTS
FRACTURING
GROUND MOTION
GROUND SUBSIDENCE
LAND RECLAMATION
MEASURING INSTRUMENTS
MINE SHAFTS
MINES
MONTANA
MOTION
NORTH AMERICA
NORTH DAKOTA
PERFORMANCE TESTING
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMOGRAPHS
SHAFT EXCAVATIONS
TESTING
UNDERGROUND FACILITIES
USA
VOIDS