Applied stowing techniques

Depending on the type of waste delivered, different stowing techniques are coming into operation to bring in the waste into the hollows of the mountain: hydraulic stowing (spuelversatz), „Big-Bag-Stowing“ or „Bulk stowing“.

The hydraulic stowing is applied in Bleicherode, whereby in Sollstedt only the „Big-Bag-Stowing“ and „Bulk material stowing“ are used.

Hydraulic stowing

During the hydraulic stowing, the waste types, which can be powdery, paste like or liquid, will be mixed together as a tranmedium and transported in the underground hollows by way of pumping over a seperate tube line system. The solids will settle there, and the pit lye pumped back.

Mechanical stowing with Big-Bags

During the Big-Bag-Stowing, the waste types will be bagged in a filling unit in special sacks. Over a shaft conveyor the Big Bags are transported underground, brought to their final destination and deposited.
Also Big Bags, which are conditioned by the generators of waste, can be deposited directly.

Bulk material stowing

Waste types, which are, due to their attributes like contents and compressive strength, are suitable for stowing directly without prior processing. Those waste types are being filled up in special containers brought underground and emptied in a bunker. With special vehicles, they are transported further into the mine and deposited.