Belgorkhimprom, Minsk, Belarus:

D. N. Musalev, Deputy Chief Executive Officer
N. N. Prokhorov, Head of Department, Candidate of Engineering Sciences

Belaruskali, Soligorsk, Belarus:
A. M. Klabuk, Chief Geologist, klabuk@kali.by

One of the applications of geophysical survey at the Starobinsk potash salt deposit is GPR which is effective in a wide range of problems, including scientific-and-engineering coordination of exploration works in the outer zones and at tectonic contacts. An illustration of such surveys is mining operations at intersection of the faulting zone in the Krasnoslobodsky Mine field of Belaruskali. The mine field is cut by the Krasnoslobodskaya faulting zone into west and east blocks. To access reserves of the west block, it was decided to intersect the faulting zone by an exploring opening with the interval face advance using GPR. The interval of the face advance was never more than 75% of the GPR penetration depth in the survey of the face rock mass (mostly not more than 20 m). As the obtained geophysical information was analyzed, recommendations were made on further safe and water-proof heading, which was only permitted at zero risk of brine inflow in mined-out area. The accomplished survey and the recommendations enabled unconditionally safe intersection of the faulting zone by mining and considerable reduction in time of the exploring opening driving.

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