Application of geophysical methods for environmental control in mining areas
- Univ. of Mining and Metallurgy, Ostrava (Czechoslovakia)
In areas affected by mining operations, a variety of methods ar necessary to acquire information for making decisions related to environmental protection. Of great importance are geophysical methods to collect data about: seismic activity and seismic hazard in the area of interest; radon risk; damage to rock massif resulting from mining operations and development of subsidence depression as mining advances; inhomogeneities in compactness of gangue fills and defects in dams and roadbeds; and hydrodynamic changes and contamination of groundwater. The importance of geophysical methods has increased recently, particularly as applied to monitoring or to the repeatable measurement-variant on fixed points. In the Ostrava-Karvina Coal Basin, a seismic station of the first range OKP was built in 1980. Between 1986 and 1990, the regional diagnostic polygon was established, involving 10 three-component stations uniformly distributed throughout the Ostrava-Karvina Basin that allows seismic activity--both natural and, particularly, that induced by mining operations--to be monitored continuously. Analysis of seismic events related to the advance of mining and to engineering and geological conditions enabled researchers to develop a seismic hazard map for surface facilities. This map is useful for design purposes and for making decisions related to maintenance and damages. Emanation measurements, together with other geophysical methods (e.g., resistivity, seismic, acoustic, and thermic measurements), are utilized to determine stability conditions in the area and to observe development of subsidence depressions and slope deformations. Some of the results from these surveys are given.
- OSTI ID:
- 106361
- Report Number(s):
- CONF-9210116-; ISBN 1-885189-02-8; TRN: IM9542%%449
- Resource Relation:
- Conference: Conference on coal, energy and environment, Ostrava (Czechoslovakia), 12-16 Oct 1992; Other Information: PBD: 1994; Related Information: Is Part Of Coal, energy and environment: Proceedings; Mead, J.S.; Hawse, M.L. [eds.]; PB: 644 p.
- Country of Publication:
- United States
- Language:
- English
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