Design of vertical drainage in the weak alluvium beneath a cofferdam

R. Mahin Roosta, M. Ahmadi

Research output: Book chapter/Published conference paperConference paperpeer-review


Construction of structures on saturated clay layers results in increase of excess pore water pressure; in this situation, time of construction should be low enough until failure does not occur in the whole system. In the Koohrang III dam project in Iran, a thick weak clay layer is in the foundation alluvium. Due to construction of cofferdam on the foundation, excess pore water pressure reaches to a high value which is not appropriate for its stability. To reduce this excess pore pressure, vertical drainage system is designed based on numerical analyses of cofferdam construction. Considering installation of vertical drainage in the weak layer under the embankment, construction of cofferdam is possible in 3 months.

Original languageEnglish
Title of host publication12th International Conference on Computer Methods and Advances in Geomechanics 2008
Number of pages6
Publication statusPublished - 01 Dec 2008
Externally publishedYes
Event12th International Conference on Computer Methods and Advances in Geomechanics 2008 - Goa Marriott Resort, Goa, India
Duration: 01 Oct 200806 Oct 2008 (Conference website)


Conference12th International Conference on Computer Methods and Advances in Geomechanics 2008
Abbreviated titleGeomechanics in the Emerging Social and Technological Age
OtherThe IACMAG conference series has covered computer methods, material modeling and testing, applications to a wide range of geomechanical problems, and recent advances in various areas that may not necessarily involve computer methods. The first conference in this series was held at Waterways Experiment Station, Vicksburg, (USA)-1972, and the subsequent were held in Blacksburg (USA)-1976, Aachen (Germany)-1979, Edmonton (Canada)-1982, Nagoya (Japan)-1985, Innsbruck (Austria)-1988, Cairns (Australia)-1991, Morgantown (USA)-1994, Wuhan (China)-1997, Tucson (USA)-2001, and Turin (Italy)–2005. The 12th Conference (1 to 6 October 2008, to be held in Goa, India) will address recent developments and relevant issues in computer methods, constitutive models and applications to different areas of Geomechanics, and emerging and important topics, and future needs, documented case studies with integration of theory, laboratory and field tests, and validation procedures. This will be consistent with the continuing theme of IACMAG conferences and the International Journal of Geomechanics, namely Fundamentals through Applications. The special theme for the 12th International Conference has been chosen as Geomechanics in the Emerging Social & Technological Age. The conference will endeavor to stress on problems raised by the present day society due to rapid industrialization and globalization, in addition to the objectives covered by the previous conferences. The conference aims to focus on some very recent and emerging trends in geomechanics such as mechanics of unsaturated soils, micromechanics, nanomechanics, bio-geo interface, infrastructure geomechanics and geomechanics for ancient monuments.
Internet address

Fingerprint Dive into the research topics of 'Design of vertical drainage in the weak alluvium beneath a cofferdam'. Together they form a unique fingerprint.

Cite this