Author(s):
1. Vladan Čanović, Mining institute, Belgrade, Serbia, Serbia
2. Violeta Čolaković, Mining institute, Belgrade, Serbia, Serbia
3. Dragan Milošević, Mining institute, Belgrade, Serbia, Serbia
4. Branka Jovanović, Mining institute, Belgrade, Serbia, Serbia

Abstract:
Inner landfill of open coal pit "Drmno" is anthropogenic deposit built largely from loess, dust and fine-grained sands where it is not possible to define any kind of stratification because the disposal of tailings was indiscriminate. It is a material with weak filtration characteristics (k = 10-7 - 10-8 m / s) where there is present of pore water and pore pressures. Rounding inner landfill of open coal pit "Drmno" in late 2014.. was observed on the floors of many local depression and parallel gullies. It was concluded that the inner landfill of surface mine Drmno there are no conditions for the development and maintenance of the water precipitator due to poor geotechnical properties of the deposited tailings. The application of jet grouting technology in areas of landfills designated for making water precipitator can significantly improve the geotechnical characteristics of the deposited tailings so that the excavation and maintenance of water precipitator designed dimensions can be implemented without difficulty in the shortest period of time.

Key words:
SURFACE MINE,INNER LANDFILL,WATER PRECIPITATOR,JET GROUTING.

Thematic field:
The exploitation of mineral resources and mining technological processes

Date of abstract submission:
08.09.2017.

Conference:
7th Balkan Mining Congress

Final paper