A master environmental control and mine system design simulator for underground coal mining. Volume 5 - subsidence subsystem.
Manula-CB; Mozumdar-B; Jeng-DK
Denver, CO: U.S. Department of the Interior, Bureau of Mines, OFR 84(5)-76, 1974 Jun; :1-199
This report, Volume 5 of the 11-volume report on the master design simulator (MDS), describes the subsidence subsystem. This subsystem uses the finite element method to simulate ground movement caused by an advancing mining face in an underground coal mine. The model is structured around the concept that the ground mass is a layered media of different thicknesses and material properties. Gob areas are considered to be unfilled with broken rock at the beginning of mining. After mining starts, the gob areas are filled with broken material which provides resistance to the lowering of the overlying strata. The model is tied to the geology and reserves subsystem, but it can also operate as a free-standing routine. A case study is presented illustrating the application of the model. A detailed user's manual and a program listing are included in the appendices.
Underground mining; Coal mining; Environmental simulation; Earth movements; Subsidence; Geologic structures; Finite element analysis; Computerized simulation; Computer programs; User needs; Computer applications
CP; Final Contract Report
NTIS Accession No.
OFR 84(5)-76; Grant-Number-G0111808
Denver, CO: U.S. Department of the Interior, Bureau of Mines, OFR 84(5)-76
Pennsylvania State University