The Experts below are selected from a list of 75 Experts worldwide ranked by ideXlab platform
Ian D. Moore - One of the best experts on this subject based on the ideXlab platform.
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Analysis for Long-Term Response of Pipes Installed Using Horizontal Directional Drilling
Journal of Geotechnical and Geoenvironmental Engineering, 2012Co-Authors: Abdul Ghafar Chehab, Ian D. MooreAbstract:AbstractEstimation of the pulling forces during Installation is an important step in the successful design of a horizontal directional Drilling project. Moreover, estimation of the postInstallation loads is important for the prediction of the long-term performance of the installed pipe. An algorithm is developed to calculate the short and long-term response of steel (elastic) and polymeric (viscoelastic and viscoplastic) pipes installed using horizontal directional Drilling. The program simulates the movement of the pulling head, calculates the Installation loads, and employs nonlinear, time-dependent constitutive models to calculate the polyethylene pipe response. The program is evaluated by comparing its calculations with known solutions, as well as with other commonly used load estimation methods. After evaluation, the analysis is used to analyze a typical horizontal directional Drilling Installation. It is shown that the pipe experiences cyclic response during Installation and a combination of creep a...
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parametric study examining the short and long term response of hdpe pipes when installed by horizontal directional Drilling
Tunnelling and Underground Space Technology, 2010Co-Authors: Abdul Ghafar Chehab, Ian D. MooreAbstract:Abstract Estimation of the pulling forces is an important step in the successful design of a horizontal directional Drilling Installation. Estimation of axial stress distribution along the pipe is also important for the prediction of its long term performance. This paper presents the results of a parametric investigation of the effect of different Installation parameters on the short and long term response of the new pipe. The investigation was carried out using procedure HDDPIPE developed by the authors for the analysis of polymer and steel pipes installed by horizontal directional Drilling. The results show that stresses and strains continue to change along the pipe throughout its service life. Some Installation parameters have significant effects on the short term Installation loads, as well as the long term axial stresses and, potentially influence expected service life. The study demonstrates that half of the maximum short term axial stress during Installation can be used as a conservative measure of long term axial stress. Less conservative estimates can be obtained using the authors’ new calculation procedure.
Abdul Ghafar Chehab - One of the best experts on this subject based on the ideXlab platform.
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Analysis for Long-Term Response of Pipes Installed Using Horizontal Directional Drilling
Journal of Geotechnical and Geoenvironmental Engineering, 2012Co-Authors: Abdul Ghafar Chehab, Ian D. MooreAbstract:AbstractEstimation of the pulling forces during Installation is an important step in the successful design of a horizontal directional Drilling project. Moreover, estimation of the postInstallation loads is important for the prediction of the long-term performance of the installed pipe. An algorithm is developed to calculate the short and long-term response of steel (elastic) and polymeric (viscoelastic and viscoplastic) pipes installed using horizontal directional Drilling. The program simulates the movement of the pulling head, calculates the Installation loads, and employs nonlinear, time-dependent constitutive models to calculate the polyethylene pipe response. The program is evaluated by comparing its calculations with known solutions, as well as with other commonly used load estimation methods. After evaluation, the analysis is used to analyze a typical horizontal directional Drilling Installation. It is shown that the pipe experiences cyclic response during Installation and a combination of creep a...
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parametric study examining the short and long term response of hdpe pipes when installed by horizontal directional Drilling
Tunnelling and Underground Space Technology, 2010Co-Authors: Abdul Ghafar Chehab, Ian D. MooreAbstract:Abstract Estimation of the pulling forces is an important step in the successful design of a horizontal directional Drilling Installation. Estimation of axial stress distribution along the pipe is also important for the prediction of its long term performance. This paper presents the results of a parametric investigation of the effect of different Installation parameters on the short and long term response of the new pipe. The investigation was carried out using procedure HDDPIPE developed by the authors for the analysis of polymer and steel pipes installed by horizontal directional Drilling. The results show that stresses and strains continue to change along the pipe throughout its service life. Some Installation parameters have significant effects on the short term Installation loads, as well as the long term axial stresses and, potentially influence expected service life. The study demonstrates that half of the maximum short term axial stress during Installation can be used as a conservative measure of long term axial stress. Less conservative estimates can be obtained using the authors’ new calculation procedure.
Thierry Louis-xavier - One of the best experts on this subject based on the ideXlab platform.
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Site of Saint Sauveur en Rue (Loire) - the BRGM Drilling machine moves through the tunnel
2014Co-Authors: Thierry Louis-xavierAbstract:The Installation of velocity sensors in boreholes makes it possible to create seismological stations where there is no underground cavity. The objective is to minimize the noise sources around the sensor. The experiment illustrated by this photo was aimed at Drilling on the Saint-Sauveur-En-Rue (Loire) site. There is the SSB station of the Geoscope network, inside the abandoned railway tunnel. The site was chosen, on the one hand for its hard rock geology, but also to compare the data obtained with those of the SSB station in order to check whether the Drilling Installation made it possible to improve the quality of the data. In addition to the interest for the Geoscope team, at the initiative of the experiment, the site is undoubtedly the only underground site where it is possible, thanks to the height of the vault, to drill 10m deep inside the tunnel. Here we see the drill, with its down the hole hammer in transport position, moving through the tunnel. This experiment was conducted as part of the Broadband Construction project of the French Seismological and Geodetic Network Résif. This is a national research infrastructure dedicated to the observation and understanding of the structure and dynamics of the Inner Earth. Résif is based on high-tech observation networks, composed of seismological, geodetic and gravimetric instruments deployed in a dense manner throughout France. The data collected make it possible to study with high spatial and temporal resolution the deformation of the ground, surface and deep structures, seismicity on a local and global scale and natural hazards, and more particularly seismic events, on French territory. Résif is integrated into European (EPOS - European Plate Observing System) and global systems of instruments for imaging the Earth's interior as a whole and studying many natural phenomena.
Jami D. Pompeo - One of the best experts on this subject based on the ideXlab platform.
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Horizontal Directional Drilling with Ductile Iron Pipe
Pipelines 2007, 2007Co-Authors: Jami D. PompeoAbstract:Since its development in 1948, and its introduction by the industry in 1955, Ductile Iron Pipe has become the most widely used product for water line Installations. In conjunction with water line Installations, Ductile Iron Pipe has become often used for gravity and force main sewer applications. Following a tradition with hundreds of years of history, Ductile Iron Pipe was a logical progression from its predecessor, Cast Iron Pipe. Ductile Iron Pipe has been widely embraced due to its inherent strength, ease of field adaptability, and myriad of joint options. When the directional Drilling method of pipeline Installation was first introduced to the United States, members of the ductile iron pipe industry did not view their product as applicable to this method of Installation. The reason; it was incorrectly believed that the directional Drilling Installation method required a pipe material with a uniform outside diameter throughout the entire pipe length. Consequently research and development efforts were put into action to design and test a ductile iron pipe restrained joint with a uniform outside diameter. During this time of Research and Development by the Ductile Iron Pipe Manufacturers, Horizontal Directional Drilling became a rapidly growing form of pipeline utility Installation. There are several key reasons for this Installation method growth. Some of the reasons are utility replacement in areas of well maintained landscape, residential areas with well maintained streets and driveways, as well as highly sensitive Historical areas. Open trench construction techniques can be very disruptive and controversial in these sensitive areas. Environmentally sensitive areas have also proven to be key areas where Horizontal Directional Drilling Installation methods lessen if not eliminate impact on environmentally sensitive areas.
Alexandre Galic - One of the best experts on this subject based on the ideXlab platform.
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Seismological Drilling in Saint-Sauveur-En-Rue (Loire) - Outside the tunnel
2014Co-Authors: Alexandre GalicAbstract:The Installation of borehole velocimetric sensors allows the creation of seismological stations where there is no underground cavity. The objective is to minimize noise sources around the sensor. The experiment illustrated by this photo was aimed at Drilling in different geologies on the Saint-Sauveur-En-Rue site (Loire). This 10-metre borehole is being drilled outside the abandoned railway tunnel where the SSB station of the Geoscope network is located. The site was chosen, on the one hand for its hard rock geology, but also to compare the data obtained with that of the SSB station in order to check whether the Drilling Installation would improve the quality of the data. This experiment was conducted as part of the Broadband Construction project of the French Seismological and Geodetic Network Résif. This is a national research infrastructure dedicated to the observation and understanding of the Earth's internal structure and dynamics. Résif is based on high technology observation networks composed of seismological, geodetic and gravimetric instruments deployed in a dense manner throughout France. The data collected allow the study of ground deformation, surface and deep structures, local and global seismicity and natural hazards, particularly seismic, on the French territory with a high spatio-temporal resolution. Résif is integrated into the European (EPOS - European plate observatory system) and worldwide instruments that allow to image the Earth's interior in its entirety and to study numerous natural phenomena.
