基于正交试验的地铁隧道超前小导管参数优化研究

发布时间：2018-05-02 00:50

本文选题：地铁隧道 + 超前小导管　；参考：《建筑技术》2017年11期

【摘要】：针对太原市漫滩地层地铁隧道工程,运用正交分析方法,以小导管长度、小导管环向布置间距和小导管直径作为要考虑的因素,每个因素选取3个水平设计正交试验,以每次试验的隧道拱顶沉降量为指标,采用FLAC3D数值计算软件模拟不同因素水平下的小导管参数对隧道拱顶沉降的影响。比较每个因素的极差大小,分析得出对拱顶沉降量影响最大的因素是小导管环向间距。再以小导管环向间距为变量,模拟在不同间距的条件下,隧道开挖引起的地表沉降和拱顶沉降,对小导管间距进行优化,从而分析得出小导管合理的布置参数,为太原地铁隧道后续设计方案与施工方案的优化和改进作参考。
[Abstract]:In view of the subway tunnel engineering in Taiyuan Mantan formation, the orthogonal analysis method is used to design the orthogonal test with the length of the small duct, the distance of the small pipe circumferential arrangement and the diameter of the small pipe as the factors to be considered, and three levels of each factor are selected to design the orthogonal test. Taking the settlement of the tunnel vault as the index, the influence of the parameters of small ducts on the settlement of the tunnel arch is simulated by using FLAC3D software. By comparing the magnitude of each factor, it is concluded that the most important factor affecting the settlement of the vault is the circumferential spacing of the small ducts. Taking the circumferential spacing of small ducts as variables, the ground subsidence and dome settlement caused by tunnel excavation are simulated under different spacing conditions, and the spacing of small ducts is optimized, and the reasonable layout parameters of small ducts are obtained. It is a reference for the optimization and improvement of the subsequent design and construction scheme of Taiyuan metro tunnel.
【作者单位】：太原理工大学矿业工程学院;重庆大学煤矿灾害动力学与控制国家重点实验室;
【基金】：国家自然科学基金资助项目(51274145) 重庆大学煤矿灾害动力学与控制国家重点实验室访问学者基金资助项目
【分类号】：U231.3;U455

【相似文献】