Catchment Mining Coefficients Following is the appearance of the Mining tab of the Catchment Coefficients dialog:
Following is a description of the parameters associated with Mining. Refer to the main Catchment Coefficients page for information on other categories of coefficients. To save the changes made when closing this dialog, click OK. To ignore changes, click Cancel.
Mining coefficients only apply to the bottom soil layer. To indicate that the bottom layer represents deep mines, check Bottom layer is deep mine overburden. The coefficients listed under Hydrology for the bottom layer will apply to the undisturbed deep mine overburden. To delineate some or all of the deep mine area as permitted discharges, click on the deep mine Permits button.
Surface mines apply to one land use only within a catchment. To simulate strip mines, select the appropriate land use next to Bottom layer is surface mine overburden in:. Surface mine simulation is conducted separately from the other land uses with its own set of soil hydrology coefficients for the bottom soil layer. The area is set by the fraction of the catchment in the chosen land use. Enter values for the remaining coefficients to represent the removed and then replaced overburden. Refer to the Hydrology coefficients for information about these coefficients. All other coefficients are the same as those used by other land uses and deep mines. To delineate some or all of the surface mine area as permitted discharges, click on the surface mine Permits button.