Session Start Date

6-1-1988

Abstract

The exploitation of the opencast mines in the East-Maritza coal basin was proceeded of detailed explorations and analysis of the engineering geological conditions. Nevertheless, one of the greatest landslides in the engineering geological practice occurred within the period of 1966 - 1968. The volume of the sliding masses reached 30 - 75 x 106 m3. These landslides made questionable some of the classic formulations of the soil mechanics and engineering geodynamics, as for instance: - the possibility of formation of sliding surfaces with inclination opposite to the direction of sliding; - the validity of the Coulomb-Navier's law in conditions of high confining pressure; - the existence of the so called "pore pressure" within the sliding zones during the deformation process. In the present paper, there could be found certain experimental data and interpretations on some of the above mentioned questions.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Second Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1988

Document Version

Final Version

Rights

© 1988 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Jun 1st, 12:00 AM

The Great Landslides in the East-Maritza Open-Cast Mines (Bulgaria) – A Theoretical Paradox in the Engineering Geology

The exploitation of the opencast mines in the East-Maritza coal basin was proceeded of detailed explorations and analysis of the engineering geological conditions. Nevertheless, one of the greatest landslides in the engineering geological practice occurred within the period of 1966 - 1968. The volume of the sliding masses reached 30 - 75 x 106 m3. These landslides made questionable some of the classic formulations of the soil mechanics and engineering geodynamics, as for instance: - the possibility of formation of sliding surfaces with inclination opposite to the direction of sliding; - the validity of the Coulomb-Navier's law in conditions of high confining pressure; - the existence of the so called "pore pressure" within the sliding zones during the deformation process. In the present paper, there could be found certain experimental data and interpretations on some of the above mentioned questions.