Treatment method for karst collapse

The embodiment of the invention provides a karst collapse disposal method which comprises the steps that construction positions are determined, specifically, the construction positions are determined within a preset construction range, and the construction sequence of all the construction positions is determined; and karst cave reinforcement treatment: after the first casing pipe downwards reaches the interface of the soil layer and the rock layer along with the drill rod at the construction position, the drill rod independently downwards drills into the first karst cave, reinforcement construction is conducted on the first karst cave, and after a reinforcement body reaches the preset strength, the drill rod continues to downwards drill into the next karst cave and reinforcement construction is conducted. The reinforcement construction of the last karst cave within the designed depth range is completed; the second casing pipe is inserted into the first casing pipe in the vertical direction along with the dril