基于未确知测度理论泵送混凝土输送稳定（增刊）

结合未确知测度理论和层次分析法构建一个泵送混凝土输送稳定性预测模型。模型建立过程中,综合考虑影响泵送混凝土输送的诸多不确定因素,如砂率、灰砂比、水灰比、坍落度、泵送剂添加量、管道内径、粗充填管道的粗糙度、骨料的形状和充填管网布置的复杂程度等。首先利用实测数据建立单指标未确知测度矩阵,然后通过层次分析法(AHP)计算出各指标因素的权重,依照置信度识别准则进行等级判定,最后得到泵送混凝土输送稳定性预测模型。通过实例验证大红山铜矿井下泵送混凝土输送稳定级别为II级,预测结果与事实相符。

Pumping Concrete Conveying Stability Prediction Model Based on Uncertainty Measurement Theory

The uncertainty measurement theory and the AHP(Analytical Hierarchy Process) were used to establish the pumping concrete conveying stability prediction model. During this process, lots of uncertain factors that influence the pumping concrete conveying were taken into account, such as, sand ratio, water-cement ratio, cement-sand ratio, slump, pumping aid, pipe diameter, pipeline roughness, coarse aggregate shape and the complexity of the filling pipe network layout, etc. Firstly, uncertainty measurement function was obtained based on the in-situ data. Then,the weights of the influence factors matrix was established according to the AHP method and credible degree recognition criteria were established according to the uncertainty measurement theory .In the end, the pumping concrete conveying stability prediction model can be obtained. Through the example of Dahongshan Copper Mine, the downhole pumping concrete conveying stability level for class II, the prediction results is consistent with the fact.