Przewodność hydrauliczna skał krystalicznych bloku przedsudeckiego
Abstract
HYDRAULIC CONDUCTIVITY OF CRYSTALLINE ROCKS OF FORE-SUDETIC BLOCK (SW POLAND)
Summary
Results of statistical analysis of the pumping tests for hard rocks on the fore-sudetic block are discussed. Population of wells under consideration consist of 44 results of pumping tests. There is no correlation between well depth or dynamic water table and total discharge or specific capacity of wells (Fig. 2, 3). Presence of groundwater to the 200 m depth was recognized. Base on Krasny transmissivity classification these rocks belong to the low and intermediate classes (Fig. 4). Average pumping rate equals to 5.9 m /h and transmissivity index 4.77. According to transmissivity variation these rocks belong to the fourth out of six classes hydraulic heterogeneity (considerably heterogenous). In comparison with sedimentary rocks analized group is situated to the some or one/two classes lower considering hydraulic transmissivity. This indicates hard rocks could be a local source of groundwater.
Summary
Results of statistical analysis of the pumping tests for hard rocks on the fore-sudetic block are discussed. Population of wells under consideration consist of 44 results of pumping tests. There is no correlation between well depth or dynamic water table and total discharge or specific capacity of wells (Fig. 2, 3). Presence of groundwater to the 200 m depth was recognized. Base on Krasny transmissivity classification these rocks belong to the low and intermediate classes (Fig. 4). Average pumping rate equals to 5.9 m /h and transmissivity index 4.77. According to transmissivity variation these rocks belong to the fourth out of six classes hydraulic heterogeneity (considerably heterogenous). In comparison with sedimentary rocks analized group is situated to the some or one/two classes lower considering hydraulic transmissivity. This indicates hard rocks could be a local source of groundwater.