Civil Engineering Reference
In-Depth Information
Legend:
0-2
>1
Pripyat
ε
= -
log
c
:
c
,%:
2-4
4-6
6-8
8-10
>10
10
-2
-10
-4
10
-4
-10
-6
10
-6
-10
-8
<10
-8
1-0.01
- Zones of upward flow
Chernobyl
Irpen
Brovary
Kyiv
Borispol
Boyarka
Berezan
Vasilkov
Obukhov
Pereyaslav-Khmelnitsky
0
10
20
km
Figure 5.11
Map of the Eocene aquifer protectability from contamination by
137
Cs for the
Kyiv region (within area of the 3D groundwater flow model). Forecast period 30 years.
flows increase even more in places of weakly occurring (by thickness) and disturbed
low-permeable Kyiv marl beds. Dashed areas on the map show the groundwater
discharge zones with upward flow in the described Eocene aquifer. These are
narrow zones along the water courses of the Dnieper and its main tributaries and
reservoirs. Zones of relatively high aquifer protectability correspond to watershed
areas with a commonly occurring confining low-permeable bed and significant
total thickness of the covering deposits.
By the protectability index ε, the corresponding relative concentration of the
contaminant can be assessed in the map zon. It characterizes the total perme-
ability of the upper aquifer and the confining bed:
Search WWH ::
Custom Search