Subsidence Monitoring in Conjunction With Underground Mine Flushing Operations.
Jacobsen-WE; Bhutani-JS; Elliott-JC
NTIS: PB 250 818 Available for Reference At Bureau Libraries :154 pages
Based on subsidence monitoring, findings regarding the degree of land surface stability are reported at two sites in Scranton, Pennsylvania, which overlay multiple levels of abandoned coal mines of the northern anthracite field. The project, sponsored by the federal Bureau of Mines, Division of Environment, entailed periodic measurement of minute surface deformations-vertical and rotational- in developed areas in which the mine cavities had received roof- supportive hydraulic backfill materials, pressure-injected through boreholes.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 250 818 Available for Reference At Bureau Libraries