铁道标准设计Issue(12)：79-83,5.DOI:10.13238/j.issn.1004-2954.2015.12.019
兰渝铁路杨家坪隧道1号横洞工区大变形成因机制探析
Analysis of Cause and Mechanism of Large Deformation in No. 1 Cross-tunnel Area of Yangjiaping Tunnel of Lanzhou-Chongqing Railway
摘要
Abstract
Based on the research of strata, lithology, geological structure, geostress, engineering geology, engineering design and construction organization plan, the paper analyzes the cause and mechanism of larger deformation in No. 1 cross-tunnel area of Yangjiaping tunnel on Chengdu-Lanzhou railway. The results indicate that the larger deformation in No. 1 cross-tunnel area of Yangjiaping tunnel is the end product of all such objective factors as the intricate geological structure, high geostress, weak and broken lithology and such subjective factors as adverse combination of rock structure surface along the tunnel, short distance between double track tunnels, unfavorable construction organization plan, different supporting measures between left and right lines of double track tunnel. Due to the objective and subjective factors of larger deformation in No. 1 cross-tunnel area of Yangjiaping tunnel, a mixed mechanism is presented of geotectonic stress expansion and structural surface deformation.关键词
成兰铁路/铁路隧道/1号横洞/大变形/成因机制/探析Key words
Chengdu-Lanzhou Railway/Railway tunnel/No. 1 cross-tunnel/Large deformation/Cause and mechanism/Analysis分类
交通工程引用本文复制引用
宋章,杜宇本,袁传保,王科,王彦东..兰渝铁路杨家坪隧道1号横洞工区大变形成因机制探析[J].铁道标准设计,2015,(12):79-83,5.基金项目
铁道部科技研究开发计划(Z2012-061) （Z2012-061）
中国铁路总公司科技研究开发计划(2013G014-B) （2013G014-B）
中铁二院工程集团有限责任公司科研项目(院计划14126005(14-17))。 （院计划14126005(14-17）
