ISTC Creation of 3D Geomigration Model for Unloading Section of Contaminated Groundwaters from the Karachay Lake to the Open Hydrographic Network

Country: Russian Federation
Start Date:   1/4/2004         Duration: 36 months months         Project Type: Other
Contract Number: 7(495) 9823206
Organisation Type:  Agency, regulator or other governmental or inter-governmental body
Contaminated land-->Contaminated land overview
Diffuse pollution-->Diffuse pollution overview
Groundwater protection-->Groundwater protection overview
Soil-->Soil Overview
Water and sanitation-->Water and sanitation Overview
Water resources and their management -->Water resources and their management Overview
Project objectives:
The Karachay lake is the biggest open storage of fluid radioactive waste with middle activity in the world. Use of this reservoir as a waste storage leads industrial 
solutions to filter into the underground hydrosphere that resulted in appearance of contaminated groundwaters halo around the lake stretching from north
to south for 10 km. To carry out work on rehabilitation of Karachay region and maintenance of healthy men’s vital functions it is important to be able to give correct
contamination value, to forecast its propagation and influence on the hydrographic environment. The main aim of the present project is to estimate the value
of contaminated groundwaters unloading to the Mishelyak river, to locate contaminants falling into the river and timing of this process.
Project Summary:
Solving of this problem is possible on the basis of numerical simulation of contamination migration process. It is necessary to create 3D geomigration model 
because of complexity of hydrogeological and hydrochemical conditions of this region. Work package on geomigration model development includes: 1. Collecting and processing of materials on characteristics of contaminated groundwaters sources. 2. Preparation of materials on geological massif characteristics. 3. Development of contaminants propagation physical model. 4. Planning of modeling region. 5. Mathematical formulation. 6. Development of mathematical model for contaminants propagation in unloading section of groundwaters to the Mishelyak river including: – choice of differential equations digitization method and construction of numerical scheme; – software development; – carrying out epignose computation; – estimation of developed model adequacy to geographical description; – model correction. Geomigration model development is usually realized in two ways: first – development of mathematical application package which allows to consider the whole
variety of conditions and processes taking place, second – satiation of the model with hydrogeological and geochemical source information. The model must consider all geological, hydrogeological, and hydrochemical features of the region: – presence of tectonically broken zones with high conductivity; – development of porous sediment cover with different lithologic structure and variable power; – sharp heterogeneity and conductivity anisotropy of water-bearing rocks; – changeability of capacitive properties; – time variation of water-bearing horizon infiltration feed; – complicated structure of groundwaters flow; – density differentiation of groundwaters flow; – modification of groundwaters level; – difficulty in connection of ground and surface waters; – radioactive decay of separate migratory components and delay of main dose-generating radionuclides by rocks (including sorption and desorption processes)
and so on.
Achieved Objectives:

Product Descriptions:

Additional Information:

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International Science and Technology Center
Submitted by: Mr Sebastien Dakin  Who does what?  18/12/2007 13:59:00
Updated by: Mr Sebastien Dakin  Who does what?  16/01/2008 15:29:00