Ruchy neotektoniczne jako czynnik kształtujący środowiska inżyniersko-geologiczne
Abstract
NEOTECTONIC MOVEMENTS AS A FACTOR AFFECTING ENGINEERING-GEOLOGICAL MEDIUM
Summary
An analysis of the neotectonic movements which appear in the area of Poland, particularly along the river valley and within mining territories, leads to the following conclusions: 1 - an increase in horizontal stresses, as compared with those being calculated, observed in rock massifs, is frequently related to a general tendency of these massifs to sink, and of their peripheral parts to rise, 2 - in rock massifs showing the tendency to rise, a distinct elastic recovery and a relative decrease in horizontal stresses can be observed. At the same time, various systems of zones of decreasing strength are produced in these massifs, the existing diaclases are more visible, and fractures of various kind widen, 3 - both course and intensity of exogeodynamical processes are various in various neotectonic areas - in decompressed and fractured rock massifs (i.e. in those characterized by stable rising movements). Under stable conditions weathering processes are more intense, denudation is stronger, morphological processes are more active, as well as more intense are fissure water flows, horst development, a.o. The Recent neotectonic movements are an important factor that should be taken into account mainly as one of the engineering-geological criteria, and as an element of time-space engineering-geological forecasts.
Summary
An analysis of the neotectonic movements which appear in the area of Poland, particularly along the river valley and within mining territories, leads to the following conclusions: 1 - an increase in horizontal stresses, as compared with those being calculated, observed in rock massifs, is frequently related to a general tendency of these massifs to sink, and of their peripheral parts to rise, 2 - in rock massifs showing the tendency to rise, a distinct elastic recovery and a relative decrease in horizontal stresses can be observed. At the same time, various systems of zones of decreasing strength are produced in these massifs, the existing diaclases are more visible, and fractures of various kind widen, 3 - both course and intensity of exogeodynamical processes are various in various neotectonic areas - in decompressed and fractured rock massifs (i.e. in those characterized by stable rising movements). Under stable conditions weathering processes are more intense, denudation is stronger, morphological processes are more active, as well as more intense are fissure water flows, horst development, a.o. The Recent neotectonic movements are an important factor that should be taken into account mainly as one of the engineering-geological criteria, and as an element of time-space engineering-geological forecasts.