Karst cave grouting and churning pile are effective for the foundation treatment in multi-karst cave areas, and steel pipe pile in highly karstified bedrock areas( especially in multilayer-caves).

• 溶洞灌浆和旋喷桩对多溶洞地基处理效果明显,而钢管桩适用于基岩岩溶强烈发育(别是多层溶洞)地基处理。