Rock core slotting tool for fracture toughness experiment and slotting method thereof

Abstract

The invention relates to a rock core slotting tool for a fracture toughness experiment and a slotting method thereof. The rock core slotting tool for the fracture toughness experiment comprises a cylindrical scale, a rock core clamp, a clamp calibration tool and an abrasive wheel cutting machine combination, wherein the upper end face and the lower end face of the cylindrical scale are provided with four grooves in one-to-one correspondence, and the four grooves are uniformly arranged along the circumferential surface; the rock core clamp is an aluminum alloy frame body with a central hole, the central hole is a through hole which is formed by connecting an upper-layer round hole and a lower-layer round hole and is provided with a step, and the rock core clamp is provided with a notch; the diameter of the clamp calibration tool is equal to the inner diameter of the cylindrical scale, the height of the clamp calibration tool is equal to the height of the cylindrical scale, a cross-shaped arc-shaped groove is formed in the center of one end of the aluminum alloy cylinder and matched with the edge of the grinding wheel, and the aluminum alloy cylinder can be exactly placed in the upper-layer round hole of the rock core clamp; and the width of the arc-shaped groove is equal to the thickness of the grinding wheel. The rock core grooving position can be accurately determined, and the rock core cutting process is stable.

Description

technical field [0001] The invention relates to the field of experimental rock core production in the field of fracture toughness experiments, and in particular to a rock core slotting tool for fracture toughness experiments and a slotting method thereof. Background technique [0002] In the related field of fracture toughness experiment, the notch of the experimental core has a crucial influence on the experimental results, and how to ensure the accuracy of the notch of the core to meet the experimental requirements has always been a difficult problem. Conventional grooving methods are often inaccurate due to the accuracy of hand-painting, and when cutting cores using conventional methods, it is easy to cause rocking and fragmentation of the core. This not only makes it difficult for the quality of the experimental core notch to meet the experimental requirements, but also has a huge impact on the experimental results. Contents of the invention [0003] An object of the ...

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Problems solved by technology

[0003] An object of the present invention is to provide a fracture toughness test rock core slotting tool, which is used to solve the problem that the conventional slotting method is inaccurate in the position of the slot due to the hand-painted accuracy problem; the present invention Another object of is to provide a method for grooving the core grooving tool for this fracture toughness experiment

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