隧道黄土堆积体施工技术  

Construction Technology of Loess Accumulation Body in Tunnel

作　　者：金海仙 JIN Hai-xian(No.2 Engineering Corporation Limited of China Railway 12th Bureau Group Co.Ltd, Taiyuan Shanxi 030032 Chin)

机构地区：[1]中铁十二局集团第二工程有限公司,山西太原030032

出　　处：《石家庄铁路职业技术学院学报》2018年第2期72-76,共5页Journal of Shijiazhuang Institute of Railway Technology

摘　　要：结合准朔铁路鹰鹞山隧道黄土堆积体施工实例,在进度慢、工效低,且难以实现"管超前"拱部支护工艺,同时黄土处饱水状态,含水率高达19%,施工扰动极易诱发围岩滑塌、塌方等险情,难以保证隧道施工安全时,针对黄土堆积体这种特殊围岩,开展施工方法研究,确保施工安全具有重要和现实的意义。In combination with the construction of loess accumulation body of the Yingyao mountain tunnel in Zhunge＇er-Shuozhou railway, in the process of slow progress, low efficiency, and being difficult to realize the support technology of ＂pipe super＂ arch, while the loess is full of water and water content is up to 19%, the construction disturbance can easily induce the danger of collapse and collapse of the surrounding rock, and it is difficult to ensure the safety of the tunnel construction, this paper studies the construction method for the special surrounding rock of the loess accumulation body, which is important and practical to ensure construction safety.

关 键 词：黄土堆积 体饱水状态 特殊围岩 施工方法研究 

分 类 号：U455[建筑科学—桥梁与隧道工程]