露天转地下隔离顶板的安全性受众多因素的影响。根据以往研究，从工程地质条件和环境影响因素，选取了抗压强度、抗拉强度、岩石质量RQD值等6个因素建立其安全性综合评价模型。通过建立适合各影响因素的未确知测度函数，并对其进行定量分析；利用熵计算各影响因素的指标权重，根据置信度识别准则对其安全等级进行判定。将该评价方法应用于厂坝铅锌矿露天转地下隔离顶板的安全性评价中，研究结果显示：其评价结果为较安全，与实际情况符合，进一步说明了该评价方法的实用性和合理性，对实际工程有一定的指导意义。
The safety of boundary pillars in the transfer of open-pit mining into underground is affected by many factors.Considering rock mechanics conditions of rock burst occurred and the impact of geotechnical engineering envi-ronment,the compressive strength and tensile strength and rock quality RQD value were selected to set up the safety comprehensive evaluation model.Unascertained measurement function is established fittest to each factor of which quantitative analysis is carried out later.Weights of influencing indexes are calculated with entropy weight theory and according to credible degree recognition criteria their safety classes are determined.This method was used to evaluate the boundary pillar safety in Changba Lead-Zinc Mine during its transfer from open-pit to underground and the results showed that the prediction results accorded with the actual situation,demonstrating the applicability and fitness of the method.This method has certain guiding significance to actual projects.
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