To solve the technical difficulties of intersection part's construction when entering into the tunnel via the service gallery (such as the transverse gallery) , in this paper, the Liujialiang Tunnel was cited as an example, and the construction practice were performed, including the scheme selection of entering into the tunnel and the construction technology of intersection between the transverse gallery and the main tunnel. Also, the construction scheme of entering into the tunnel via the transverse gallery were summarized, with which the unfavorable geological condition and the situation of cannot normally entering into the tunnel were avoided. Further, the construction technology of the intersection between transverse gallery and main tunnel were studied in detail. The results show that this kind of construction technology is safe and feasible, with the helpful references for entering into tunnel and key part's construction of similar project in future.%为解决利用辅助导坑方案(如横洞)进洞时隧道交叉段施工的技术难点,以刘家梁隧道工程为依托,对隧道进洞方案的选择及横洞与正洞交叉段施工技术进行施工实践,总结利用横洞进洞的施工方案,从而避开不良地质情况及无法正常进洞的局面,并对横洞与正洞交叉段施工技术进行详细的研究与实践,最后得出此种工法是安全可行的,可为今后类似工程的进洞及关键部位的施工提供借鉴.
展开▼
