Wyniki wyszukiwania - BazTech

1

Environmental impact assessment of the designed Petrikov potash mining and processing complex, Belarus: approaches and results

Barbikov D. V., Grechko A. M., Savchenko V. V., Zlebova A. E., Kurlovich D. M., Sauchyk S. F.

Przegląd Solny

|

2016

|

T. 12

19--27

EN

Petrikov deposit of potash salt is situated in Gomel oblast of Belarus in the south-east of Pripyat Trough, and consists of Northern and Southern prospects. Underground mining of potash salt will start at the Northern prospect with the area of 166 km2. It is expected that mining will last for about 50-80 years. Environmental Impact Assessment (EIA) was carried out at the stage of designing of Petrikov mining and processing plant. Standard EIA procedure included a set of investigations, including assessment of surface subsidence, assessment of changes in groundwater level, assessment of changes in productivity of forest phytocenoses and crops, and assessment of groundwater pollution due to production of potash fertilizers. Maximum values of possible surface subsidence (up to 2.3 m) will occur within the area, where the surface will be effected by mining of potash layers 1, 2, and 3 of the productive horizon IV-p, using long-pillar mining system. Surface subsidence will influence surface topography, surface and groundwater, landscape structure and land resources. The result of surface subsidence will lead to inundation and swamping of land, as well as to increase in the areas affected by annual floods in the valleys of Pripyat and Bobrik rivers. Surface subsidence will affect the whole area of the prospect within the limits of planned mining fields, except the areas above safety pillars. In the result of raise in groundwater level the area with groundwater depth of more than 2 m will decrease from 69.1% to 17.8%, and the areas with groundwater depth from 3 to 5 m will disappear. The area with groundwater depth less than 1 m will increase from 0.1 % to 34.0 %. Within 19.5% of the area the groundwater level will raise above the surface level (the area of inundation). Surface subsidence and change in groundwater level will cause certain decrease in yields of timber and crops, besides this 25.64 km2 of forest, 0.68 km2 of arable land and 3.24 km2 of meadows will be inundated. In order to prevent inundation within certain areas the protective engineering facilities have been designed, and arrangement of groundwater monitoring wells has been proposed. The protective facilities at solid and liquid sludge dumps are designed to prevent the environment from pollution. Nevertheless, the patterns of possible migration of pollutants in groundwater were assessed in case of accidental discharge of waste.

2

Assessments of the sylvinite ore dressability at the Starobin potassium salt deposit

Petrova N. S., Bakhmutskaya L. V., Zhuravskaya A. M.

Geology, Geophysics and Environment

|

2012

|

Vol. 38, no. 1

93-97

EN

Determination of basic quality parameters of sylvinite ores qualifies them as economic mineral material only, but does not account for the properties necessary to be considered to classify their dressability. A saturation exploration of the Nezhin mining site involved for the first time a forecast and technological assessment of sylvinite ores in three minable potash horizons, which was made along with estimates of geological fields and was based on a comprehensive study of the mineralogical and technological features of ores in the rock massif and crushed samples.

PL

Określenie podstawowych parametrów jakościowych złóż sylwinitu umożliwia ustalenie ich użyteczności ekonomicznej, lecz nie pozwala ocenić własności niezbędnych do oceny możliwości wzbogacenia rudy. Badania geologiczne prowadzone w kopalni Nezhin umożliwiły po raz pierwszy prognozowanie i techniczne oszacowanie mineralizacji sylwinitowej w trzech eksploatowanych horyzontach potasonośnych dzięki zastosowaniu kompleksowej analizy cech mineralogicznych i technologicznych mineralizacji w litych i pokruszonych próbkach ze złoża. Przemysłowe złoża potasowe kopalni Nezhin zawierają kopalinę o wysokiej zawartości sylwinu, ich główne ciało rudne zakwalifikowano jako obiekt o średniej możliwości wzbogacenia. Jako sylwinitowe serie eksploatacyjne wyodrębnia się warstwy kopaliny reprezentujące jeden typ technologiczny kopaliny. Mineralizacja potasowa wykazuje nieznaczne różnice w eksploatowanych warstwach II poziomu, jest obfita w warstwach sylwinitowych nr 2, 3 i 4 III poziomu oraz w warstwach I poziomu potasonośnego. Udział we frakcji rudy powyżej 0.5 mm sięga ponad 70%. Właściwości technologiczne sylwinitowej rudy z głównych poziomów eksploatacyjnych kopalni Nezhin wskazują, że instalacja wzbogacająca rudę do wymaganego poziomu przemysłowego może być użyteczna dla rudy pokruszonej do frakcji 3.15 mm.

3

Sulphur isotope composition of sulphate minerals in the potash deposits from the eastern part of the Carpathian Foredeep - preliminary report

Hryniv S. P., Parafiniuk J.

Biuletyn Państwowego Instytutu Geologicznego

|

2001

|

nr 396

67-68

4

Environmental problems of Stebnyk potash deposit (mine no. 2), the Carpathian Foredeep, Ukraine

Buchynsky V. A.

Biuletyn Państwowego Instytutu Geologicznego

|

1999

|

nr 387

15--16