الفهرس 
Dewatering History
METHODS OF DEWATERINGOnly 14 pages are availabe for public view
 |  | from | 216 |  |  |
| | | from | 216 | | |
Abstract
The use of dewatering has been increasing in recent years for
satisfactory performance of many civil engineering projects and has become
one of the important branches in the field of the geotechnical engineering.
In spite of that, the design of dewatering system is commonly based on
empirical methods which are usualJy implemented with the guidance of long
experience of the designer and the contractor.
In this thesis, the case study of dewatering system of Elkobba Palace,
which located northeast of Cairo, has been investigated. The site is
surrounded by highly intensive urban area. The dewatering system is
composed of thirteen deep wells and thirty-two piezometers. One hundred
and four settlement points were installed to monitor settlement of different
structural elements of existing buildings. Field measurements were recorded
along eighteen months.
One of the main objectives of this research is to monitor the actual
drawdown during pumping of a single and multiple wells. The full-scale
measurements were utilized to examine the reliability of using conventional
mathematical methods and available computer program to predict the
groundwater drawdown in sandy soil. Hence, the effect of lowering
groundwater table on the settlement of existing structures is discussed.
A computer program had been upgraded to simulate groundwater flow
during field dewatering. Results of the numerical analysis and their
verification using field measurements as well as other analytical and
empirical methods are presented. Practical recommendations are also given
for predicting drawdown using multiple deep wells.