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Zhang Y.-H.,CAS Wuhan Institute of Rock and Soil Mechanics | Li H.-X.,CAS Wuhan Institute of Rock and Soil Mechanics | Sheng Q.,CAS Wuhan Institute of Rock and Soil Mechanics | Wu K.,CAS Wuhan Institute of Rock and Soil Mechanics | And 2 more authors.
Yantu Lixue/Rock and Soil Mechanics | Year: 2010

The successfully monitoring and early warning for highway slope in operation period are not common though the highway landslide is the common disaster. The main reason is that the highway slope has the characteristics including spot distribution along road, long interval, small scale, large quantity and lack of statistics, which cause the high monitoring costs and difficult early warning. In this paper, the wire pulling displacement meter with the precise of 1 mm is used to monitor the surface displacements of landslide, and the GPRS net of China Telecom is applied to transform the monitoring data; the whole system has high automation and low cost. Meantime, the FEM software PLAXIS is used to conduct the strength reduction analysis and plastic analysis. Based on the calculation results with different parameters, the relationship between the slope safety factor and surface displacement is established in lack of the strength parameters, permeability and soil water characteristic curve; and the corresponding early warning measures are proposed according to the change of surface displacement. This method has been applied to a highway landslide in Hunan province.


Zhang Y.-H.,CAS Wuhan Institute of Rock and Soil Mechanics | Li H.-X.,CAS Wuhan Institute of Rock and Soil Mechanics | Sheng Q.,CAS Wuhan Institute of Rock and Soil Mechanics | Li Z.-Y.,Hunan Communications Scientific Academy | Yue Z.-P.,Hunan Communications Scientific Academy
Yantu Lixue/Rock and Soil Mechanics | Year: 2010

Highway rock slopes have the characteristics including spot distribution along the road, long interval, small scale and large quantity, little statistics and easy to be influenced by engineering and environment, lack of detailed rock mechanical parameters; and it is difficult to apply the current evaluation system. Based on the characteristics of highway rock slope, considering the systematicness and comprehensiveness, conciseness and scientificity, independence and operability, a reasonable slope stability evaluation index system has been set up; and the stability gradation model for highway rock slopes has been established by using the fuzzy comprehensive evaluation. This model has been applied to Changde-Jishou Highway in Hunan province to analyze the stability of 142 high rock slopes; and the results are reasonable and confirm to reality. Practical so as to provide for reference to other similar projects.

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