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基于未确知测度理论,建立边坡稳定性的未确知评价模型。针对边坡稳定性评价中许多不确定性影响因素,从岩体的工程地质、地形地貌、水文气象等特征出发,选用7个指标作为边坡稳定性评价的指标,建立各评价指标未确知测度函数;根据信息熵理论计算得各评价指标的权重,并依照置信度识别准则进行稳定性评价;将建立的模型对某待评价边坡进行了实际应用,并与可拓理论、模糊评判结果进行了比较分析。结果表明:该模型评价结果与可拓理论、模糊评判结果一致,能够比较客观地反映该边坡稳定性的状况,且方法科学合理、意义明确,为边坡的稳定性评价提供了一种新思路。
Based on the unascertained measure theory, an unascertained evaluation model of slope stability is established. In view of many uncertain factors in slope stability evaluation, seven indexes are chosen as the indexes of slope stability evaluation based on engineering geology, topography and hydrology and meteorology of rock mass, and the evaluation indexes of each slope are not known Measure the function; calculate the weight of each evaluation index according to the theory of information entropy, and evaluate the stability according to the confidence criterion; apply the model to practical application of a slope to be evaluated, and with the extension theory, fuzzy evaluation results Conducted a comparative analysis. The results show that the model evaluation results are consistent with the extension theory and fuzzy evaluation results, which can objectively reflect the condition of the slope stability. The method is scientific and reasonable with clear meaning, which provides a new method for the slope stability evaluation Ideas.