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| VALLEY MORPHOLOGY AND VALLEY SIDE STABILITY OF LIZIGOU RIVER IN NEIJIANG-KUNMING RAILWAY |
| JIANG Zhong-xin，ZHANG Jun |
| The Geotechnical Company of the Second Survey and Design Institute， MOR |
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Abstract The Lizigou long bridge is a dominant engineering of the Neijiang-Kunming railway， and the stability of high and steep slope of No. 11 pier in the bridge is a misgiving problem. With the observation and analysis to the morphostructure，the river valley shape and the correlative sediments of Lizigou area， it is considered that the step-spur on the back of No. 11 pier slope is a high terrace of Lizigou river，which is not a unfavorable geological accumulation form and is stable as a whole-During digging slope of the No-11 pier， the influence of engineeing activity is only on surface， and the whole stability of the slope is not shaken. Therefore， the design plan of reinforcing the slope is feasible.
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Received: 20 July 2000
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2000, Vol. 17 
