This study aims to analyze in-situ application of preliminary mechanical dewatering of excavated peat within strategy of efficient management of peat bog water resources. Natural peat bogs are water-encroached, and water quantity is considerable, which limits direct practical use of the deposits and complicates mining. Water in peat bogs has complex chemical composition according to Russian and foreign research. The qualitative composition of peat water during open cast mining is presented. The implemented analysis shows that it is expedient to add the open cast technology of peat mining with operation of mechanical dewatering of peat raw material. Modern surface mining machines have capacities to treat peat with liquid phase withdrawal. With continuous-action screw press, preliminary mechanical dewatering will reduce water content of excavated peat approximately by 45%. The rate of subsequent drying of peat pellets also grows, both afield and in plant conditions. Withdrawn water is returned to peat bog, and no treatment plant is required to be constructed. Furthermore, peat haulage cost drops y 40%. The process of mechanical peat dewatering needs improvement of machinery with regard to physical and mechanical properties of peat raw material.

For citation: Mikhailov A. V., Garmaev O. J., Fedorov A. S., Garifullin D. R. Efficiency of open cast peat mining with mechanical field dewatering. MIAB. Mining Inf. Anal. Bull. 2019;(7):30-41. [In Russ]. DOI: 10.25018/0236-1493-2019-07-0-30-41.


Peat bog, peat water, open cast mining method, water balance, mechanical peat dewatering, screw press.

Issue number: 7
Year: 2019
ISBN: 0236-1493
UDK: 553.97:622.331
DOI: 10.25018/0236-1493-2019-07-0-30-41
Authors: Mikhailov A. V., Garmaev O. J., Fedorov A. S., Garifullin D. R.

About authors: A. V. Mikhailov1, Dr. Sci. (Eng.), Professor, O. J. Garmaev1, Graduate Student, A. S. Fedorov, Graduate Student, D. R. Garifullin1, Graduate Student, Saint Petersburg Mining University, 199106, Saint-Petersburg, Russia. Corresponding author: O.J. Garmaev, e-mail: garmaev.oyun@gmail.com.


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