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The Effect of Selected Factors on Floor Upheaval in Roadways—In Situ Testing by MaÅkowski, Piotr; Ostrowski, Åukasz; Bednarek, Åukasz is a Engineering article available to read on EtoBox.

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The phenomenon of the floor upheaval occurs in virtually every type of rock mass and at every depth, accompanying the process of excavation of tunnels and headings. Despite its inconvenience, it is rarely studied because of the complexity of the process and the multiplicity of the factors causing deformations in floor rocks. To quantify the effect of the selected factors on floor upheaval, this article presents an analysis of results of in situ measurements carried out in three coal mine roadways at 15 measuring stations. These measurements were taken over varying periods of time, between 129 and 758 days. Groundwater and fault zones intersecting the excavations were considered as the key factors that affect floor upheavals. Therefore, the measurement bases were located at local faults and sites of water inflow. To compare the results, the stations were also located where the rock mass was not exposed to any factors other than stresses resulting from the depth of the excavation. The excavations were driven in various rocks and were located at different depths from 750 to 1010 m. The analyses of the study results show that the floor upheaval always depends on time and can be describ

Who reads The Effect of Selected Factors on Floor Upheaval in Roadways—In Situ Testing?

Author

MaÅkowski, Piotr; Ostrowski, Åukasz; Bednarek, Åukasz

Publisher

MDPI AG; Multidisciplinary Digital Publishing Institute (MDPI); Basel: Molecular Diversity Preservation International (MDPI), 2008- (ISSN 1996-1073)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)