| The stability analysis of jointed rock slope is still one of the important research topics in the field of geotechnical engineering.In this paper,three methods of simplified Bishop method,finite element method and fuzzy measure method are combined to analyze the stability of large open-pit slope,so as to provide a new research method for engineering application.Aiming at the stability problem of the jointed rock slope,taking a large open-pit mine of our south as an example,and the fuzzy measure model is applied to analyze the lope stability.In the process of analysis,according to the problem of determining the engineering parameters,the artificial neural network method is applied to determine the parameter is related to the power of the blasting and he parameter is related to the rock property.The parameters can be determined by fuzzy measure model in fuzzy probability of slope failure.Secondly,in order to verify the fuzzy measure method of the calculated results,the sliding surface is the same as that determined by the fuzzy measure method when the same open pit slope is analyzed by using the simplified Bishop method.Finally,when the slope stability is analyzed by the finite element method,the sliding surface is automatically generated after the establishment of the slope model without prior assumption.The position and shape of the sliding surface obtained by this method can be verified with the results obtained by the fuzzy measure method and the simplified Bishop method.Through the calculation and analysis results show that the superiority of the fuzzy measure method can not only consider the influence of slope instability of many uncertain factors,but also can get a range of slope instability,which can reflect the influence of various factors on the overall stability of the slope.The results of this study also show that the three methods can be more accurate analysis of the stability of the slope.The results can be used as reference for similar projects. |
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