نتایج جستجو برای: Isfahan Metro Line 1
تعداد نتایج: 3055178 فیلتر نتایج به سال:
When a tunnel passes through weak soil with different conditions, or there is a thin layer of soil on top of the tunnel, the mass of soil or rock must be stabilized. In addition, an excavation method must be chosen and applied in order to control the amount of subsidence and convergence which are among the most significant factors in excavation a tunnel especially in urban area, since the soil ...
The project of Hangzhou Metro Line 1 is the first metro line of the urban rapid rail transit system in Hangzhou, China, which is one of the largest municipal projects of Hangzhou and is being constructed commencing fromMarch 28, 2007 and expected to be completed by October 1, 2012. This metro line has a total length of 48 km and 34 stations, connecting Hangzhou downtown with the suburban area o...
Tunnelling is a vital geotechnical engineering feature of underground transportation systems that potentially hazardous if not properly investigated, studied, planned, and executed. A reliability, availability, maintainability (RAM) analysis one the main practical techniques in machinery-based projects to recognize failure repair rates machines during or after their operations. RAM mechanized t...
Shield tunneling construction of metro infrastructure will continuously disturb the soils. The ground surface will be subjected to uplift or subsidence due to the deep excavation and the extrusion and consolidation of the soils. Implementation of the simultaneous monitoring with the shield tunnel construction will provide an effective reference in controlling the shield driving, while how to de...
Annotating metro maps with thumbnail photographs is a commonly used technique for guiding travelers. However, conventional methods usually suffer from small labeling space around the metro stations, especially when they are interchange stations served by two or more metro lines. This paper presents an approach for aesthetically designing schematic metro maps while ensuring effective placement o...
On 15 April 2012 at around 13:00 local time, following a heavy rainfall in Tehran, a break in the channel wall of Kan River caused a flash flood in the Tehran metro tunnels. Consequently, line 4 of the metro went out of operation for about two weeks 1 . The flood was running for 30 hours in the metro system so that three stations were flooded causing damage to four trains and 28 wagons 2. It is...
New high-speed trains need modern energy management methods to reduce energy consumption. A fuzzy method based control method was used to solve this problem in this paper and evaluated the results on basis of data in Tehran metro line 3. Recovering the maximum amount of train kinetic energy when it is in the braking mode and optimal division of traction systems demand between energy storage sys...
One of the major challenges facing managers and urban planners in the third millennium is increasingly development of informal economy. Tehran Metropolis is not an exception and it has witnessed a growing expansion of the informal economy, especially vendors in the subway over the last few decades. Accordingly, this paper aimed to review the theories and approaches about the phenomenon of stree...
We consider the problem of drawing a set of simple paths along the edges of an embedded underlying graph G = (V,E) so that the total number of crossings among pairs of paths is minimized. This problem arises when drawing metro maps, where the embedding of G depicts the structure of the underlying network, the nodes of G correspond to train stations, an edge connecting two nodes implies that the...
In this research a fire scenario was simulated in one of the stations of the line 7 of Tehran's subway system. The Line 7 is under construction and the ventilation system is under design. Fire was set for a stopping metro train at the platform of the station. A 160 meter length eight-car metro train with the forth wagon on the fire was studied. The heat release rate is based on a quadratic f...
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