I am writing to inform you about the slope failure at the North of the West Sub-pit as shown in Figure 1. Slope failure occurred on 14 July 2015 at the excavation area of mine contractor M.P.C.
and near to the M.P.C. road on elevation +590 m.msl. The failure that occurred in E seam formation (Coal seam) with bedding 085/40๐. Photographs of failure is shown in Figure 2.
Geotechnical has recommended a solution as follows:-
- M.P.C. road should be spaced from the failure zone at least 5-7 m., as shown in Figure 3.
- In case of raining, Mine contractor A (M.P.C) shall remove the machine out of the failure zone or cracks zone; and
- If mine contractor A and/or HPC-mine operation find cracks in the area, please inform HPC Geotechnical team.