摘要
艰险山区铁路隧道在施工过程中可能同时存在塌方、瓦斯爆炸等多种灾害风险,针对隧道自然特征属性,基于可拓优度评价法,引入梯形模糊数层次分析法确定各评价指标的权重系数,在物元模型的基础上建立艰险山区铁路隧道的安全等级判定模型,以便于后续施工中采取合理的施工技术。对渝黔铁路新凉风垭隧道进行安全等级判定,其结果为极不安全(Ⅴ级),现场地质勘查等资料表明,可拓评估在艰险山区铁路隧道安全等级判定中有着较好的适用性。
During the construction of railway tunnels in hard-dangerous mountainous areas, there mayexist various disaster risks such as landslides and gas explosions. According to the natural characteristicsof the tunnel and based on the goodness evaluation method, trapezoidal fuzzy AHP is introduced todetermine the weight of each evaluation index. On the basis of matter-element model, the judgment modelfor the safe grade of railway tunnel in hard-dangerous mountainous area is established to allow reasonableconstruction technologies to be adopted in subsequent construction. The safety grade of the NewLiangfengya Tunnel of Chongqing-Guiyang Railway is assessed and the result is extremely unsafe （Grade Ⅴ）. Field geological survey and other data show that extension assessment is better suited to predict thesafety level of railway tunnels in hard-dangerous mountains.
作者
何志敏
李远富
樊敏
HE Zhi-min;LI Yuan-fu;FAN Min(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道标准设计》
北大核心
2018年第11期125-128,160,共5页
Railway Standard Design
基金
中国铁路总公司重大科研项目(2015G002-N-5)
四川省科技支撑计划项目(2015SZ0218)
