Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

The nice ancient Bulgarian town Balchik is situated on deep (70m) landslide on the Bulgarian Black Sea cost. The genesis of this enormous landslide is supposed in last geological periods when the Black Sea level had changed around 300m. The geologic structure is a celebrated combination of Sarmat limestone, marl and sensitive clay. The mechanics of failure reminds the landslides of Anchorage (Alyaska) from 1962 even without tsunami. Through 80-th and 90-th years of the last century the landslide has been protected by the complex of, maybe, all known means for Cost protection and the aim has attained. The complex includes general precautions (ruble groins, spur dykes, drainage gallery…), many local precautions (pre-stressed anchors, drilling drainages, buttresses, walls…), additional precautions (rehabilitation of canals, reconstruction of buildings…) etc. In the report are presented the erected protection complex, some studies results of the monitoring. The study of the landslide had started from the beginning of the last century and the monitoring and analysis of the protection is from the end of the last century.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Aug 11th, 12:00 AM Aug 16th, 12:00 AM

Landslides in Balchik –The Biggest Nature Experiment for Shore Protection in Bulgaria

Arlington, Virginia

The nice ancient Bulgarian town Balchik is situated on deep (70m) landslide on the Bulgarian Black Sea cost. The genesis of this enormous landslide is supposed in last geological periods when the Black Sea level had changed around 300m. The geologic structure is a celebrated combination of Sarmat limestone, marl and sensitive clay. The mechanics of failure reminds the landslides of Anchorage (Alyaska) from 1962 even without tsunami. Through 80-th and 90-th years of the last century the landslide has been protected by the complex of, maybe, all known means for Cost protection and the aim has attained. The complex includes general precautions (ruble groins, spur dykes, drainage gallery…), many local precautions (pre-stressed anchors, drilling drainages, buttresses, walls…), additional precautions (rehabilitation of canals, reconstruction of buildings…) etc. In the report are presented the erected protection complex, some studies results of the monitoring. The study of the landslide had started from the beginning of the last century and the monitoring and analysis of the protection is from the end of the last century.