| abstract |
A method and device for preparing a karst cave based on three-dimensional (3D) printing technology. The preparation method comprises the following steps: (1) determining the size of a sample according to test requirements, constructing a 3D karst cave (5) digital model based on a 3D karst cave (5) scanning result, and performing 3D printing using an alloy, so as to form a primary karst cave (5) sample; (2) obtaining a rock similar material mixture according to a proportioning scheme; (3) pouring the mixture into a sample mold while pre-burying the karst cave (5) model into the mixed material according to the position of the karst cave (5); (4) maintaining the sample together with a forming mold at room temperature until the rock similar material is hardened, removing the forming mold, and maintaining at constant temperature and humidity and then baking a prepared rock sample (2) containing the karst cave (5) or electrifying and heating same by means of an electric heating wire provided in the alloy, so as to form the rock sample (2) having the hollow karst cave (5); and (5) filling the hollow karst cave (5) with different fillings so as to form different types of karst cave (5) samples. |