广州地铁由于地质条件复杂，在施工中遇到了众多难题，如穿越溶洞、穿越高强度花岗岩、穿越珠江等，在施工过程中积累了大量的盾构施工经验。对广州地铁的地质条件进行分析，对复杂地质条件下的土压平衡盾构掘进技术进行了研究和总结。

Due to the complex geological conditions of Guangzhou Metro project, for example the shield machines need to bore through karst caves and highstrength granite and cross underneath the Pearl River, a lot of shield machine construction experience has been accumulated during the construction, while numerous difficult problems have been encountered. The article makes an analysis on the geological conditions of Guangzhou Metro project and makes a study on and summary of the EPB shield machine construction technology under complex geological conditions.