探讨TBM通过不良地质洞段的施工方法

TBM是我国隧道掘进开挖的首选良好设备,但对隧道地质条件较为敏感。受当前勘察技术局限性、施工线路较长的影响,经常会出现施工中所遇到的地质岩性与先前勘察结果不一致、且在同一隧洞存在着不同年代、不同岩性、同时伴随着不同地质构造等不良地质现象,这就给TBM施工带来了极大困难和挑战。对TBM如何顺利通过不良地质洞段并采取有效的支护手段进行探讨,进而为弥补勘察设计结果的缺陷,保证施工顺利进行提供参考和借鉴。

Discussion on Construction Methods for TBM through the Unfavorable Geological Tunnel Section

TBM Construction is very sensitive to the geological conditions.Due to a long line of tunnel construction and Limitations of the current exploration technologies,etc,the geology of the entire line of tunnel can not be accurately described in detail at design time.It often happens Geological lithologies encountered in the construction are inconsistent with the Exploration results,And in the same tunnel the existence of different geological ages, different lithologies,accompanied by Unfavorable geological phenomena of different geological formations,etc.Thus brings the great difficulties and challenges to TBM construction.Discussions on TBM how successfully through the unfavorable geological tunnel section,and taking effective supporting means to efficient construction method.And then provide references for making up for the defects of the results of the pre-exploration,and ensuring smooth construction.