Sample preparation method of grouting consolidation body with internal defects

A method of preparing a grouting consolidation sample with internal defects, comprising the following steps:

• step 1:
• using a tool to carve a groove having a shape matching a defect to be prepared on plasticine to form a defect mould, and placing one end of a string at a centre of the groove;
• step 2:
• heating a low-melting point material to melt, and pouring the melted low-melting point material in liquid form into the groove in the plasticine;
• step 3:
• after the low-melting point material is cooled and solidified to form a defect model, taking out the defect model with the string, and fixing the defect model onto a casting mould of consolidation using the string;
• step 4:
• slowly injecting an evenly stirred slurry along an inner edge of the casting mould of consolidation while keeping a position of the defect model unchanged;
• step 5:
• after the slurry reaches a solidification time to obtain the sample, removing the casting mould of consolidation, and placing the sample into an oven to heat and keep at a temperature above a melting point of the low-melting point material;
• and
• step 6:
• taking out the sample and the preparation is finished.