福州地铁规划建设中的水文地质环境问题分析

摘要

指出了福州地铁沿线场区地貌类型复杂，地层多变，地下水丰富，地质条件复杂，地铁规划建设中的地质环境问题较为突出。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，探讨了地铁建设过程中几个主要的地质环境问题：包括隧道与基坑突涌、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、地层软硬突变等对地铁施工的影响，并提出了相关建议。%Owing to the complex geomorphic types ,changeful stratum ,abundant ground water resources and complex geological conditions ,the geological environment problems are more prominent inmetro program-ming and construction of Fuzhou ,Fujian Province .Based on the particular geological background ,thisarticle analyzes the characteristics of geological environment for programming area of Fuzhou metro ,and points out some major geological environment problems in the programming and construction ,such aswater 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 , and finally it gives some corresponding suggestions .