福州地铁规划建设中的若干地质环境问题分析

Analysis on some major geological environment problems during programming and construction of Fuzhou metro

结合福州特有的地质背景,分析了地铁规划区的地质环境特征,提出了地铁建设过程中几个主要的地质环境问题:隧道与基坑突涌、地下热水、软土地基的沉降变形、砂土液化和软土震陷、残积土及花岗岩风化孤石、地层软硬突变等问题对地铁施工的影响,并给出了相关建议,以供参考借鉴。

Based on the particular geological background, this paper analyzes the characteristics of geological environment for programming area of Fuzhou metro. Some major geological environment problems during programming and construction of Fuzhou metro have been pointed out, such as water inrushing of tunnel and foundation pit, geothermal water, subsidence of soft soil foundation, sand liquefaction, seismic sinking of soft soil, eluvial soil and weathered granite boulders, abrupt change of stratum hardness and so on, for which it gives some suggestions, so as to pro- vide some reference.