M. Moosavia, , , M.J. Yazdanpanahb and R. Doostmohammadia
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aSchool of Mining Engineering, The University of Tehran, Iran
bControl Center of Excellence and Department of Electrical and Computer Engineering, The University of Tehran, Iran
Received 27 November 2005;
revised 13 April 2006;
accepted 4 July 2006.
Available online 14 August 2006.
Abstract
The stochastic nature of the cyclic swelling behavior of mudrock and its dependence on a large number of interdependent parameters was modeled using Time Delay Neural Networks (TDNNs). This method has facilitated predicting cyclic swelling pressure with an acceptable level of accuracy where developing a general mathematical model is almost impossible. A number of total pressure cells between shotcrete and concrete walls of the powerhouse cavern at Masjed–Soleiman Hydroelectric Powerhouse Project, South of Iran, where mudrock outcrops, confirmed a cyclic swelling pressure on the lining since 1999. In several locations, small cracks are generated which has raised doubts about long term stability of the powerhouse structure. This necessitated a study for predicting future swelling pressure. Considering the complexity of the interdependent parameters in this problem, TDNNs proved to be a powerful tool. The results of this modeling are presented in this paper.
Keywords: Artificial neural networks; Time delay neural networks; Cyclic swelling pressure; Cyclic wetting and drying; Pressure cell
Dr Doosmohammadi ,... essay
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Hossein Kamran haghighi in Wed 18 Feb 2009
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Phase2 7.0 is a powerful 2D elasto-plastic finite element stress analysis program for underground or surface excavations in rock or soil. It can be used for a wide range of engineering projects and includes support design, finite element slope stability and groundwater seepage analysis.
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This ancient bazaar has an old and new texture present in the southeast corner of the city. The major construction is of brick work. Inspite of diversity of architecture of domes, ceilings and... + Full Story
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The province of West Azarbayjan has its own special attractions regarding rural and tribal spaces or settlements. These are counted as valuable area for sight-seeing specially for tourists.... + Full Story
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In this respect, Zanjan province has an elaborate number of dishes, many of which can be traced down to the authentic villages and tribes. The various types of Aash are: Omaj Aashi, Soqan... + Full Story
These plain knives and a variety of pocket knives and switch blades, carpets, 'Charoq' (a local type of women shoe) filigree work, silver and a variety of 'Kilim' (a coarse... + Full Story
The most famous natural phenomena in Zanjan Province is Katale Khor Cave means " mount of Sun"
It's situated at ~
two hundred km south of Zanjan city & 410km away from Tehran.
one hundred seventy milions years old in 7 store first 5 stores & 13km of this cave is explored. They believe this cave join to Ali Sadr cave in Hamedan province.
first 2 km is ready for visitors.& a special way for Rock climbing.
This famous edifice is located in Baba Jamal Choqoie Zanjan. It was constructed by two brothers named Mashad Akbar (an architect of those times) and Mashadi Esmail, (a mason). This construction...
The said lies south west of the Cohan Dej (Royal citadel). It was constructed during the reign of Soltan Mohammad Khoda Bandeh (Oljaito) in the years 704-712 AH. This structure has 8 elevated...
This Bazaar is located in the ancient network of the city and consists of two portions such as the Bazaar-e-Bala or upper section and the 'Bazaar-e-Paieen' or 'lower' section...
This river finds its source in the mountains of Kurdestan, and meandering through the winter residing quarters (Qishlaq) of the Afshar terrain, finds its way to the suburbs of Khoda Bandeh. Thereby...
Other mausoleums of Zanjan province worth mentioning are: Imamzadeh Mohammad, Imamzadeh Ebrahim, Imamzadeh Yahya, mausoleum of Peer Sakineh Khatoon and the Gol mausoleum of Abhar.
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These plain knives and a variety of pocket knives and switch blades, carpets, 'Charoq' (a local type of women shoe) filigree work, silver and a variety of 'Kilim' (a coarse...
From ancient times the music of Azarbayjan owed its fame to the presence of the 'Ashiqs' who were self made artisans contributed to the local music by composing lyrics and displaying...
In this respect, Zanjan province has an elaborate number of dishes, many of which can be traced down to the authentic villages and tribes. The various types of Aash are: Omaj Aashi, Soqan...
Published by Butterworth Heinemann, in 2006 488 pages, 1 volume Price: $ 89.00 Prices are in US dollars
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Hossein Kamran haghighi in Thu 17 Jul 2008
The bank said it sees the average gold price at US$1,000/oz over the next month, against a previous forecast of US$900/oz, and US$1,050/oz over the next three months
More than a dozen Chinese provinces have begun to ration power supplies because soaring coal costs and declining supply have cut into electricity generation at a time when demand is set to soar
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