DBPapers
DOI: 10.5593/sgem2012/s02.v2017

GROUNDWATER DRAINAGE SYSTEM FOR A RESIDENTIAL AREA

F. C. MIRON, F. ENACHE NICULESCU
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 127 - 134 pp

ABSTRACT

The article presents the consolidation method for the foundation soil of a residential
complex located in Constanta municipality, Romania. The stability of the site soil was
affected by the beginning of works at the foundation perimeter of a commercial
complex and their sudden stagnation. At the distance of approximately 22.0 m of the
future complex there are several blocks of flats with height regime GF+8S.
Excavations have been carried out inside the Commercial Center perimeter, on the
depth of approximately 28.0 m and along of 52.0m length.
In order to stabilize the high seafront on which the residential buildings are placed,
drilled piles screens have been realized, having the length of 32.45 m and 5.0 m
embedded in the ground, on which 6 levels anchors were placed.
After stagnation of works regarding the foundation perimeter, inside its wall an earth
leakage has occurred through the screen piles, on the length of approx. 20.0 m, resulting
a hole of 6.0 x 6.0 (m) size.
The material leakage determined partial exposure of anchorages and piles. The earth
leakage was caused by heavy rains, losses of water carrying networks, by networks
clogging and degradation of important areas of drainage system galleries (cracks,
fractures, etc..), all that disrupting the hydrodynamic groundwater regime.
The study aims to ensuring the proper functioning of drainage system for groundwater
and consolidation modalities of the existing sewer, located at a depth of 12 to 14 m
above ground level, by supplying concrete frames for earth active pressure takeover.
Extension of the drainage system will be achieved by means of horizontal and vertical
drains made of geosynthetic materials. The results of drainage system analysis and also
the detailed method for the consolidation and extension of the analyzed site will be
indicated in the article. Moreover, proposed solutions regarding consolidation and
expanding of the drainage system for the analyzed site will be presented in the article.

Keywords: drainage, consolidation, reinforced concrete frames, geosynthetic materials