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The Impact ofW enchuan Earthquake on Railway Route Selection |
BAI Chao-neng |
China Railway Eryuan EngineeringGroup Co. Ltd, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: The research is done on how to reasonably select railway route atvery beginning of the construction for achieving the goal of scientific prevention ofearthquake and reduction ofdisaster.
Research conclusions:(1)When the railway route selection is conducted in high seismic intensity region, especially around faultzone, the track should pass through the highly intense earthquake region in parallel outside of the fault zone, andwhen the track has to pass through the faultzone, itshould pass through the faultzone vertically asmuch as possible and the inverted slope around the tunnel port should not be vertical to the fault zone. (2)The railway track should keep away from the areawhere lots of rocksmay fall in wide range. (3) The track should keep away from the fault zone asmuch aspossible. If the track has to pass through the faultzone, itshould pass the narrow area of the fault zone with low subgrade and low bridge. (4)When the track passes through valley, the reasonable track elevation should be selected on consideration to the potential unfavorable factors, such as barrier lake, unstable sliding body, sliding slope, talus andmudflow. (5)When the railway construction is conducted adjacent to the unstable slope to affect the construction safety, the comparison should bemade between the plan of reinforcing the unstable slope and the plan of the track keeping away from the unstable slope. (6) When track passes through the high seismic intensity region, more tunnels should be buil,t and less bridge and road structure should be buil.t (7) No or less bridge in steep slope and nearmountain, road structure and small curve radius track should be buil,t especially in unfavorable geological area.
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Received: 14 May 2009
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