This is a method for making artificial karst cave. The invention is proposed in order to provide a method for making a lifelike artificial karst cave. First the reinforcement bars etc. are used to make the skeleton followed by fixing flexible plus material, foam plastic and plates onto the skeleton to form the framework. Then the concrete, a mixture of cement, sand and stones, is moulded in the framework to form a roughcast of the artificial karst cave. The surface of the roughcast of the artificial karst cave is then sprayed with coloured cement thick liquid produced by blending white cement with different chemical industry pigments to form a colour roughcast of the artificial karst cave. Finally, the calcite powder is sprayed on the surface of the roughcast to obtain the effect of natural karst cave imitation. Then the air temperature of the karst cave is lowered to below zero by a refrigeration device and different colour water-based fluid is sprayed onto the surface of the cave, so that is gets frozen to obtain the effect of an ice karst cave.
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