Search
Now showing items 1-10 of 21
Box Jacking/Pushing Method for Tunnel Construction in Rock: Doha Metro, Gold Line Project
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The case of a box pushing tunneling method in rock, on Doha Metro Gold Line project,
successfully implemented to connect multiple entrance structures of Sport City station
under a live traffic junction, in a heavy urban ...
Embedded Retaining Wall Design and Performance Monitoring for Deep Excavation in Geological Conditions of Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Embedded retaining walls such as diaphragm walls and secant bored pile walls have
become viable water-tight earth retaining and stabilizing systems for deep excavation
in urban areas. In this article, the design aspects ...
Constructability and Economical Comparison Between Two Proposed Permanent Shoring Systems in Qatar: A Case Study
(
Qatar Univesrity Press
, 2020 , Conference Paper)
This paper introduces the constructability and economic feasibility study of using one
of the proposed two types of permanent shoring system for a highway project in Qatar.
The cast-in-situ cantilever retaining wall and ...
The Use of Measuring While Drilling and Wireline Logging to Identify the Geological Strata in Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
In the field of engineering and construction in the Middle East, it is a common practice to
economize a geotechnical investigation using a conventional scope, based on the lowest
price. This tends to compromise the project ...
Utilizing Steel Slag in the Removal of Suspended Solids from Dewatered Construction Water
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Construction dewatering is an operation used to remove shallow groundwater that
infiltrates construction sites. After recovering this water from the construction sites, the
water is either discharged to the sea, injected ...
Hydrogen Gas Production from the Injection of Nanoscale Zero-Valent Iron and Sodium Borohydride Solutions: Potential Effects Near Injection Wells
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The injection of nano-scale zero-valent iron (nZVI) is a remediation technique for the
treatment of organic and metal contamination in soil and groundwater. The hydrogen gas
(H2) produced during the reaction of nZVI and ...
Impact of Draw Solution Concentration on Forward Osmosis Process: A Simulation Study
(
Qatar Univesrity Press
, 2020 , Conference Paper)
In this study, a simulation model was used to evaluate the performance of forward
osmosis process. A solution of low salinity was used as the feed solution in forward
osmosis to dilute saline solution (i.e. draw solution) ...
Predicted and Back-calculated Coefficients of Permeability of Randomly Fractured Rock Mass: A Case Study
(
Qatar Univesrity Press
, 2020 , Conference Paper)
This paper presents the discrepancy between the coefficients of permeability measured
for randomly fractured limestone using field falling-head tests and that back-calculated
for the same rock mass based on the actual ...
Use of 3D Images to Evaluate Formation Damage Induced by Montmorillonite Fines in Porous Media Systems
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Formation damage costs oil and gas industry $140 billion/year in lost productivity, this
is a key challenge to Qatar, the world's largest LNG exporter. During production from
a well, multiphase flow foster drag forces to ...
Investigation of the Effect of the Force-Frequency on the Behaviour of a New Viscous Damper for Railway Applications
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The primary purpose of this work is to experimentally investigate the damping
coefficient of a viscous damper, intended to be used in railway applications to reduce
noise emission. The viscous shock absorber used in this ...