Method for manufacturing single-fracture rock specimen based on 3D printing

Abstract

The present invention discloses a method for manufacturing a single-fracture rock specimen based on 3D printing, including: step 1: drawing a three-dimensional digital model of a single fracture and athree-dimensional digital model of the specimen mold; step 2: respectively performing 3D printing on a single-fracture model and the specimen mold based on the three-dimensional digital model of thesingle fracture and the three-dimensional digital model of the specimen mold; and step 3: manufacturing the single-fracture rock specimen by pouring cement mortar by using the single fracture model and the specimen mold. In the present invention, in the method for manufacturing a single-fracture rock specimen based on 3D printing, a single fracture model and a mold model are obtained through a three-dimensional modeling technology and a 3D printing technology, and a single fractured rock specimen is obtained by pouring cement mortar, so as to avoid a problem that an experimental error is increased because a new fracture is produced when the specimen is sampled in the field, and repetitive experiments cannot be performed due to the rock breakage of natural rock sample, and processing precision is high, so that accuracy of the single-fracture rock specimen is ensured, and accuracy of a study of characteristics of fluid seepage in the fracture is improved.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics and engineering, and more specifically relates to a method for manufacturing a single-crack rock mass test piece based on 3D printing. Background technique [0002] With the popularization and large-scale of geotechnical projects such as water conservancy, slopes and foundation pits, the impact of groundwater on the safety and stability of such projects has become more and more prominent. The seepage problem has become the focus of research by scholars and engineers. features to analyze seepage problems. [0003] The rock mass has criss-cross structural surfaces such as tension, compression, and torsion, and is composed of a rock block pore system with good porosity and poor water conductivity and a fracture system with poor porosity and strong water conductivity. Compared with pore permeability, the coefficient can be ignored, but because the fractured medium is different from the porous ...

AI Technical Summary

Problems solved by technology

This method uses water drilling to drill cores, and the electric spark will continuously generate gas and metal chips during the processing. If the gas and metal chips cannot be removed in time, the processing stability will be affected, and the processing quality will be deteriorated. Poor, reduce machining accuracy

At the same time, the use of water drills to drill cores has higher requirements for processing personnel. The greater the depth, the more difficult the construction, and at the same time, problems such as inclination and imbalance will occur.

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