Belgorod State University, Belgorod, Russia:

Pogorelov Yu. S., Associate Professor, Candidate of Geological and Mineralogical Sciences, e-mail: strojanalit@mail.ru

"BGP-service" JSC, Belgorod, Russia:

Adigamov B. Ya., Chief Executive Officer, Assistant Professor, Candidate of Engineering Sciences

Scientific and Research Center "NOVOTEK" LLC, Belgorod, Russia:

Genzel G. N., Deputy Director, Candidate of Engineering Sciences

For the purpose of a production potential estimation, the georadar and dipole electric profilings were applied for research of the fracture zones from the circular drift on 950 meters depth. There were held the parametric measurements of specific electrical resistance of rock massif in boards and drift soil, as well as of the divided ort, which passes through the ore body.

There was established, that the saturation with a brine reduces the specific electrical resistance of rock massif approximately to 2 orders. The specific electrical resistance of ore body is reduced in 2,5 times. This clearly demonstrates the considerable volume fissuring, which reduction is naturally marked in the drift, towards the fracture zone. The separate fissures are revealed by a georadar, according to a full absorption of signal. The electric profiling reveals the fissures by the intensive negative anomalies.

The paper notes the bridging zones; the fissuring increasing with the depth; the deep localization intervals of fissuring; the influence of roadway support; and the fissures, which do not reach the floor. The received data of geophysical methods are closely correlated among themselves and with the geological data. Thus, the electric profiling is notable for the great information value under the characteristics of spatial locating and intensity of anomalies from the fissures, which are filled with the brine. The georadar method is notable for the great productivity and an opportunity to reveal the fissures, which do not reach the floor. The investigated fracture zone is notable for the geophysical data and is characterized by the outlines, which are more extensive than for the geological data, as well as by the appreciable tendency to increase, according to the depth.

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