当前位置: 首页 > 文章 > 基于数值模拟的湿陷性黄土隧洞开挖方法的比较 甘肃农业大学学报 2014 (3) 157-161
Position: Home > Articles > Comparison of excavation methods in collapsible loess tunnel based on the numerical simulation method Journal of Gansu Agricultural University 2014 (3) 157-161

基于数值模拟的湿陷性黄土隧洞开挖方法的比较

作  者:
高毓;许健
单  位:
吉林省通化市水利水电勘测设计研究院;甘肃农业大学工学院
关键词:
湿陷性黄土;隧洞;数值模拟;开挖方法;CRD法
摘  要:
为了更好、更安全地在湿陷性黄土段进行隧洞的开挖施工,结合某隧洞工程实例,采用FLAC3D有限差分软件建立了湿陷性黄土段隧洞的模型,分别对全断面开挖法、上下台阶开挖法、CD法、CRD法进行了施工模拟,得到这4种工法引起湿陷性黄土隧洞地层围岩水平位移和竖向位移.结果表明:CRD法是其中对地层围岩位移影响最小的开挖方法,是一种有效控制湿陷性黄土隧洞围岩变形的施工方法.
译  名:
Comparison of excavation methods in collapsible loess tunnel based on the numerical simulation method
作  者:
GAO Yu;XU Jian;College of Engineering,Gansu Agricultural University;Tonghua Institute of Water and Conservancy and Hydroelectric Power;
关键词:
collapsible loess;;tunnel;;numerical simulation;;excavation method;;cross diaphragm
摘  要:
For better and more safe to excavate tunnel in collapsible loess,combined one tunnel project case,the models of collapsible loess tunnel was set up by using FLAC3Dfinite difference software.The construction simulation was carried out by full face excavation method,benching stepping method,center diaphragm and cross diaphragm.The horizontal displacement and vertical displacement of surrounding rock in collapsible loess tunnel caused by four methods were obtained.The results showed that cross diaphragm had least influence on displacement of surrounding rock,so it was an effective method to control deformation of surrounding rock in collapsible loess tunnel.

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