矿山法地铁隧道防排水型式双层次评价体系

A Double Layer Evaluation System of Waterproof and Drainage Pattern of a Mined Metro Tunnel

矿山法地铁隧道以其灵活快捷低廉的特点,在全国地铁工程中大量应用,但其防排水型式的选择仍然以传统的粗犷式定性判断为主。依托青岛地铁工程,首先通过调研总结并借鉴AHP的思想树立防排水型式为目标层,建立起双层次分析模型,第1层共五大类影响因素,之后再进一步细分,可得到第2层15个影响因素;为解决决策的数值化问题,引入专家打分系统,将各个影响因素的作用数值化,可以得到因素的权重及分值,并且在数学上进行归一化处理和一致性检验,得到误差允许的数值化结果;最后依据事先建立好的判别准则选用相应的防排水类型。此项研究建立起了地铁矿山法隧道防排水型式双层次综合评价体系,该体系最大最突出的优点是可以量化分析防排水选型。

The mining tunneling method has been widely used in urban subway projects all over China,but the traditional rough qualitative judgment is still applied to choose anti-drain type of tunnels. Relying on Qingdao subway construction,the double-hierarchical analysis model is found by studying and referring to the ideas of AHP. The model takes the anti-drain type of the subway tunnel as its target layer firstly. There are 5 factors in the first level,which are subdivided to 15 factors as its second level. The expert scoring system is introduced to quantify the influence of various factors respectively,which is necessary for obtaining the weight value and the score of these factors. Then normalization processing is carried out to check its consistency,it contributes to get the numerical results in the allowable error range. Finally,the corresponding anti-drain type will be acquired according to the pre-established criteria. It creates the double-hierarchical comprehensive evaluation system of mined method metro tunnel anti-drain type in such a study. The most important advantage of the system is that it can make an anti-drain type decision by quantifying analysis.