Karst stratum is stable structure

The utility model provides a karst stratum is stable structure for the bored concrete pile that punches a hole construction, the bored concrete pile that punches a hole passes through at least one solution cavity in the karst stratum from top to bottom, the pore wall handle the structure include the solution cavity roof punch a hole bury underground before the construction to the institute construct punch a hole bored concrete pile stake position the certain degree of depth in karst stratum and exceed the section of thick bamboo that protects of the certain height in karst stratum surface, and protect the stake hole that the concentric and diameter of a section of thick bamboo is lighter than the bored concrete pile that punches a hole that protects a diameter, the closed closely knit fluid-tight mud protective layer of a solution cavity wall and a pore wall behind stake hole pore wall crack aquatic and layer and the puncture solution cavity roof. The utility model discloses since only use the slabstone, the clay, the karst region is handled to things such as straw and cement, and the project progress is fast, and the engineering quality is reliable, construction safety, general resource can obtain better utilization, has practiced thrift a large amount of concrete materials