Mold for manufacturing hemi-discoid rock-like specimen with fracture surface and manufacturing method

Abstract

The invention discloses a mold for manufacturing a hemi-discoid rock-like specimen with a fracture surface. The mold comprises a cylindrical mold groove with the upper portion open, wherein a through downward-concave partition board groove is formed in the bottom surface and side surface of the mold groove along the diameter, a partition board is vertically installed in the partition board groove, and the cylindrical mold groove is divided into two symmetrical parts by the partition board; an inverse-T-shaped sliding groove is formed in the upper end of the partition board in the length direction, a rigid set rule is installed in the inverse-T-shaped sliding groove of the partition board in a sliding mode, first rulers are arranged on the two sides of the inverse-T-shaped sliding groove in the upper end face of the partition board, two vertically-through straight slotted holes which are spaced from each other are formed in the middle of the rigid set rule in the length direction, a steel disc positioning device is movably installed in each straight slotted hole, and a steel disc is installed on the lower portion of the steel disc positioning device. The invention further discloses a rock-like specimen manufacturing method. The parameters of the fracture surface of the specimen can be adjusted conveniently, two specimens can be manufactured at a time, machining is easy, repeated use can be achieved, and manufacturing efficiency and precision are improved.

Description

technical field [0001] The invention relates to the technical field of rock-like material experiments, and is mainly used for the production of rock-like specimens with a semi-disc surface with fissures, in particular a mold and a manufacturing method for making a semi-disc with fissures. Background technique [0002] The existence of fissure surfaces in rock mass leads to differences in the relevant mechanical parameters of rock mass, and the expansion and evolution of fissures are also the main content of rock mechanics. At present, the most important research method is the model test method: use concrete or gypsum to make rock-like test blocks, set crack surfaces inside the rock-like test blocks, and control factors such as the distance, length, angle and connectivity of the crack surfaces more accurately . At present, some results have been obtained for the square rock-like test block mold with cracked surface, but for the dynamic tensile test of some rocks and the stud...

AI Technical Summary

Problems solved by technology

At present, some results have been obtained for the square rock-like test block mold with cracked surface, but for the dynamic tensile test of some rocks and the study of the expansion mechanism of rock cracked structural planes and the crack size effect, semi-disc rock-like molds are required. For the test piece, there are few researches on the fabrication of related fracture surfaces

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