Subsidence prediction for two UCG projects
The movement of strata overlying two UCG projects is calculated using analyses that have been developed for the prediction of subsidence above coal mines. The techniques are used to analyse the Hoe Creek 3 burn and the forthcoming TONO project partial seam test. The application to the Hoe Creek case is straightforward because the cavity shape is known, but application to the TONO project required the estimation of the lateral extent of the cavity. The estimates use the projected quantity of coal to be removed and two scenarios for the burn sequence. The subsidence analyses are combined with the anticipated pattern of coal removal to place an upper boundary on the surface subsidence that can be expected at the TONO site.
- OSTI ID:
- 5745187
- Journal Information:
- In Situ; (United States), Journal Name: In Situ; (United States) Vol. 8:4; ISSN ISOMD
- Country of Publication:
- United States
- Language:
- English
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