为了从众多PPP模式中识别出与综合管廊项目特征最匹配的模式,以保障综合管廊PPP项目顺利运行，首先，分析综合管廊项目特点和PPP模式特征，初步识别出7种适用于建设综合管廊的PPP模式以简化筛选过程； 其次，建立影响模式选择的评价指标体系，运用OWA算子赋权计算指标权重； 最后，引入可拓物元，量化PPP模式关于各指标的私有化程度，运用关联函数确定每种PPP模式对于综合管廊项目的适用程度。西安市地下综合管廊项目PPP模式选择的实证案例，验证了该方法的科学性和可操作性。

The selection of publicprivatepartnership (PPP) modes is very important for successful operation of PPP project of urban underground utility tunnels. The characteristics of the utility tunnel project and the PPP modes are analyzed; and 7 kinds of PPP modes suitable for the construction of utility tunnel to simplify the filter process are identified. And then the evaluation index system for PPP mode selection is established; and the weights of indexes are calculated by ordered weighted averaging (OWA) operator. Finally, the extensible matter element is used to quantify the privatization degree of the indexes of PPP modes; and the correlation function is used to determine the suitable degrees of every PPP mode to utility tunnels. The application of PPP mode selection to Xi′an underground utility tunnels has verified the scientificity and operability of the abovementioned method.