基于AHP模糊综合方法的长大公路瓦斯隧道通风系统评价研究

Researches on Long Highway Gas Tunnel Ventilation System Based on AHP-Fuzzy Comprehensive Method

针对长大公路瓦斯隧道通风系统可靠性评价中指标因素存在诸多模糊性和不确定性的问题,引入一种基于AHP模糊综合方法的长大公路瓦斯隧道通风系统评价方法。根据长大公路瓦斯隧道通风系统的特点和安全隐患,选取隧道风压合理性等14个评价指标,建立长大公路瓦斯隧道通风系统的AHP模糊综合评价模型;建立各因素指标隶属度函数,并利用AHP计算指标权重,依照"最大隶属度原则"和修正原则进行等级评判,得出长大公路瓦斯隧道通风系统的评价结果;并将此方法应用于广成山长大公路瓦斯隧道工程的评价实际。评价结果表明:利用基于AHP的模糊综合评价法对隧道通风系统进行可靠性评价,评价结果科学准确,客观地反映了长大公路瓦斯隧道通风系统危险源类别,可为类似瓦斯隧道通风系统评价提供参考与借鉴。

Contraposing to the fuzziness and uncertainty problems of the evaluation indexexisting in the reliability evaluation process, a fuzzy comprehensive evaluation method based on AHP was introduced to evaluate long highway gas tunnel ventila- tion system. According to the features and safety hazards of long highway gas tunnel ventilation system, standard of tunnel pressure rationality and other 13 evaluation were selected as the major elements. A fuzzy comprehensive evaluation model based on AHP was established. The membership function of each evaluation factor was built, and the weight of each index was undertook by analytic hierarchy process. Employing the model, considering maximum membership degree principle, cor- rection principle and reliability evaluation process was conducted for gas tunnel ventilation system safety level evaluation. The method was applied to a practical engineering of Guangchengshan long highway gas tunnel ventilation system. The re- suits were scientific and accurate, objectively reflecting the practical hazard classes for the tunnel ventilation system. Using the fuzzy comprehensive evaluation method based on AHP to evaluate the reliability of the long highway gas tunnel ventila- tion system, the evaluation results present notably useful reference value for similar ventilation system evaluation.