广佛线地铁隧道土洞和溶洞的探测与处理

土洞和溶洞是石灰岩地区特有的地质现象，由于土洞和溶洞的存在，给石灰岩地区地下工程施工带来了很大困难，工程中常发生突发性涌水、涌砂、塌陷等工程事故。因此，对于广佛线石灰岩分布区的土洞和溶洞，在工程施工前必须有效措施进行探测与处理，以防患于未然。就广佛线地铁隧道所处地层中土洞和溶洞的成因、探测、发育特征及处理方法进行全面介绍，为今后类似工程的处理提供了良好的借鉴意义。

Exploration and Treatment Method of the Soil Cave and limestone Cave in Metro Tunnel of Guang-Fo Line

Soil cave and limestone cave are the characteristic geological phenomenon of limestone regions. Those caves have brought serious trouble in the construction of underground engineering in limestone regions, such as sudden gush water, gush sand and collapse often happened in the course of construction. In order to prevent unexpected events to be happened, the effective exploration and limestone cave of limestone regions in Guang-Fo Line. The paper overall discusses the genesis, exploration method, growth characteristics, and treatment method of the soil cave and limestone cave in metro tunnel of Guang-Fo line. It can be used as a reference to similar engineering.