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PHYSICS OF ROCKS AND PROCESSES
ArticleName Detailed study of structure and composition of waterproof strata by mine seismic survey at the Verkhnekamskoe salt deposit
DOI 10.17580/em.2023.02.04
ArticleAuthor Prigara A. M., Gribkov D. S., Zhukov A. A., Tsarev R. I.
ArticleAuthorData

VNII Galurgii JSC, Perm, Russia1 ; Perm State National Research University, Perm, Russia2

Prigara A. M.1,2, Candidate of Engineering Sciences, Leading Researcher, Andrey.Prigara@uralkali.com

Tsarev R. I.1,2, Candidate of Engineering Sciences, Leading Researcher

 

VNII Galurgii JSC, Perm, Russia
Gribkov D. S., Researcher
Zhukov A. A., Candidate of Engineering Sciences, Head of Laboratory

Abstract

The key objective in salt mining is preservation of the waterproof strata integrity which is a guarantee of accident-free operation of mines. Until recently, for the Verkhnekamskoe Salt Deposit, there were no reliable tools to study the waterproof strata at the interwell distance. This article continues publishing new data obtained by mine seismic on shear waves with separation of reflections. For the first time in history of geological exploration at the Verkhnekamskoe Salt Deposit, this method developed by the Geophysics Laboratory of VNII Galurgii has allowed the explicit detection of geological section elements previously only revealable by the direct methods. Within the framework of the article, the possibility of identifying the rhythm stacks in the waterproof strata, the areas of spreading, wedging and replacement of carnallite rocks in the waterproof strata, and the possibility of tracing the folding behavior of these rocks is evaluated and exemplified. It is shown that the developed method makes it possible to significantly increase the detail and reliability of geological models. Implementation of the method of mine seismic survey using shear waves with separation of reflections in modern practice in mining significantly reduces the risks of emergencies and loss of mines.

keywords Verkhnekamskoe Salt Deposit, mine seismic survey, reflected wave method, common depth point, shear wave method with separation of reflections, geology, sylvinite, carnallite, waterproof strata, replacement zone
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