DETECTION OF UNDERGROUND COMMUNICATIONS IN INDUSTRIAL NOISE CONDITIONS ACCORDING TO MAGNETIC FIELD DATA

(Novikova P.N. Voroshilov V.A. )

Application of magnetic survey for detection of engineering networks in an urbanized area is considered. The amplitude-frequency structure of magnetic field variations by empirical mode decomposition (EMD) is researched. The results of profile and areal micromagnetic surveys are presented, implemented on the Perm State University territory. The qualitative interpretation of anomaly magnetic field is performed. The main types of the linear anomalies associated with underground communications are allocated.......

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  • 2017  № 5, pp. 4-9

GRAVITY MONITORING ON MINES AT VERKHNEKAMSKY POTASH DEPOSIT

(Bychkov S.G. Simanov A.A. Michurin A.V. )

Monitoring observations of gravity field allow to reveal the dynamics of deformation processes of rock masses and to carry out the forecast of dangerous and catastrophic situations. Based on the results of repeated observations, a dynamic gravity anomaly is calculated, defined as the difference between the subsequent and previous values of gravity. Since all the invariant components of the gravitational field are equally present in any pair of observations, the dynamic anomaly reflects only a specific mining or fast flowing geological process. The main noise-producing factors during gravimetric monitoring are considered, methods for interpreting dynamic anomalies are suggested, examples of gravimetric studies at emergency sections of mines are given.......

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  • 2017  № 5, pp. 10-16

GRAVIMETRIC SURVEY OF ARCTIC SHELF AND MAINLAND AREA

(Tarantin M.V. Kostitsyn V.I. Prostolupov G.V. Chadaev M.S. Gershanok V.A. Iblaminov R.G. )

Analisys of geterogeneities of Earth's curst structure at the mainland and neighbour Arctic shelf area and some results are presented. Fine features of Earth's crust and characteristics of relation of Moho depth and global tectonic structures of sediment cover and crystal basement and local structures distribution features are observed. For data processing gravity and magnetic maps of scale 1:1 000 000 are used. Depths of Earth's crust bottom were taken from schematic map of Moho boundary «Crustal Structure Maps of Europe», composed by European Seismological Commission (Warsaw, Helsinki, 2007). Data of global surveys were also used. During the processing of geophysical surveys we used parametric relations of considered Earth fields.......

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  • 2017  № 5, pp. 17-24

ESTIMATION OF PROPAGATION DISTANCE OF ELECTROMAGNETIC WAVES IN SALTS OF VKMS

(Zhukov A.A. Prigara A.M. Pushkareva I.Yu. Tsarev R.I. )

The world experience proves high efficiency of ground penetrating radar method including in conditions of potash mines, however this method has almost not been applied in the conditions of VKMS (Verkhnekamskoye salt deposit). One of the main reasons is absence of full experimental works specifying the method prospects and limitations, which is the basis for its application in VKMS conditions. The works aimed to estimate one of the main parameters for completing practical tasks, propagation distance of electromagnetic waves, were performed in the mine SKRU-3 of PJSC Uralkali in 2016. The conducted research is a necessary stage of ground penetrating radar implementation into the production activity of Verkhnekamye potash companies for increasing mining works safety by salt deposit development.......

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  • 2017  № 5, pp. 25-28
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