<< Click to Display Table of Contents >> Navigation:  Tutorials > Automated Excavation & Dump Tutorials > Setting up a Simulation for a Pit with Steep Dip.

The previous example involved a pit with moderate seam dip. The coal exposure and mining process involved removing all waste and exposing the coal for entire strip length, prior to mining out be exposed coal. In the following example the seam dip and apology precludes this approach. Were the entire seam to be exposed the surface of the coal seam would be to steep to be worked by truck and shovel fleet. Consequently the excavation proceeds down in horizontal lifts with coal removed as exposed by this process of progressive lift excavation.

 

Description of Pit and Mining Method.

 

The The pit modelled here is referred to as the North Pit. The pit has a single seam with pits oriented in a down dip direction. The following figures illustrate this pit:

 

 

The figure above shows a longitudinal section through a typical strip in the North Pit. This section shows a bench surface representing the first bench which will expose coal. Waste stripping will proceed down this bench level, at which point the expose coal would be mined, and stripping will proceed down to the next bench and the process will repeat. The following to figures show the next strip at the state where the first bench exposing coal is complete, and then with the coal for this bench mined out:

 

 

 

The figure above shows the pit excavated to the level of the bench which first exposes coal, and the state with this coal mined out. From this bench level down the procedure a pit, the waste for a particular level is removed leaving the coal exposed than the coal for this level is mined out.

 

In the following topics will set up the Stage Excavation, Subsequences and Supersequence to model the excavation of the Strip 2 North Pit.