穿越碳质千枚岩破碎带隧道侵限及塌方的处治  

Treatment of Tunnel Encroachment and Collapse in Carbonaceous Phyllite Fracture Zone

作　　者：张勇勇 唐良 ZHANG Yongyong;TANG Liang(SCEGC Mechanized Construction Group Co.,Ltd.,Xi'an,Shaanxi 710000,China)

机构地区：[1]陕西建工机械施工集团有限公司,陕西西安710000

出　　处：《建筑施工》2024年第1期98-101,共4页Building Construction

基　　金：陕西省住房城乡建设科技计划项目(2022-S21)。

摘　　要：基于316国道某穿越碳质千枚岩破碎带隧道侵限及塌方处治施工过程,根据现场侵限及塌方情况,分别对侵限段和塌方段进行处治。工程实践表明,采用“大管棚+小导管超前支护施工+空腔填充”技术进行超前支护对穿越碳质千枚岩破碎带隧道塌方进行处治较合理,施工效果良好,施工处于安全可控范围内。Based on the construction process of a tunnel crossing the carbonaceous phyllite fracture zone on National Highway 316,the encroachment section and collapse section are treated respectively according to the site encroachment and collapse conditions.The engineering practice shows that it is reasonable to adopt the advanced support technology of"large pipe shed+small guide pipe advanced support construction+cavity filling"to treat the collapse of the tunnel crossing the carbonaceous phyllite fracture zone,and the construction effect is good,and the construction is within a safe and controllable range.

关 键 词：侵限 换拱 塌方体 围岩注浆 管棚 

分 类 号：TU99[建筑科学—市政工程]