A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling the Effects of Longwall Mining on the Ground Water System
The objective of this U.S. Bureau of Mines hydrologic/subsidence investigation was to evaluate the effects of longwall mining on the local ground water regime through field monitoring and numerical modeling. Field data were obtained from multiple-position borehole extensometers (MPBX's) that were used to measure subsurface displacements. Survey monuments were installed to measure mining-induced surface deformations. Numerous drawdown and recovery tests were performed to characterize hydrologic properties of the overburden strata. A combined finite element model of the deformation of overlying strata, and its influence on ground water flow was used to define the change in local and regional water budgets. The predicted effects of the postmining ground water system determined by the model correlated well with field data collected from the field site.
Modeling the Effects of Longwall Mining on the Ground Water System
The objective of this U.S. Bureau of Mines hydrologic/subsidence investigation was to evaluate the effects of longwall mining on the local ground water regime through field monitoring and numerical modeling. Field data were obtained from multiple-position borehole extensometers (MPBX's) that were used to measure subsurface displacements. Survey monuments were installed to measure mining-induced surface deformations. Numerous drawdown and recovery tests were performed to characterize hydrologic properties of the overburden strata. A combined finite element model of the deformation of overlying strata, and its influence on ground water flow was used to define the change in local and regional water budgets. The predicted effects of the postmining ground water system determined by the model correlated well with field data collected from the field site.
Modeling the Effects of Longwall Mining on the Ground Water System
R. J. Matetic (author) / J. Liu (author) / D. Elsworth (author)
1995
20 pages
Report
No indication
English
Hydrology & Limnology , Mineral Industries , Longwall mining , Land subsidence , Ground water , Environmental impacts , Base flow , Groundwater movement , Subsurface flow , Water levels , Infiltration rates , Water pollution monitoring , Monitoring wells , Long term effects , Hydrologic properties , Overburden , Coal mining , Underground mining , Mathematical models , Vertical displacement , Model analysis
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