Cutting system for prefabricated middle locking type rock mass fractures with different geometrical characteristics

Abstract

The invention discloses a cutting system for prefabricated middle locking type rock mass fractures with different geometrical characteristics. The cutting system comprises a driving case; and a cutting engine, a gear engine, a sliding rail set and a cutting mechanism are installed in the driving case. The cutting mechanism comprises a carborundum fret saw and a U-shaped bevel protractor lower disc installed on the sliding rail set in a sliding mode. A sliding groove is formed in the top face of the U-shaped bevel protractor lower disc, and a U-shaped bevel protractor upper disc is installed on the top face of the U-shaped bevel protractor lower disc in a sliding mode through the sliding groove. Adjusting assemblies are further installed at the two ends of the U-shaped bevel protractor upper disc. Rock is fixedly arranged on the adjusting assemblies. According to the cutting system, the integrity of the prefabricated middle locking type intermittent fracture rock mass is ensured; the cutting mechanism and a driving assembly are matched for use, so that the problem that the joint inclination angle and length are difficult to accurately control is solved; and the inclination angle and the length of the fracture can be accurately controlled and cut when the fracture is prefabricated, meanwhile, the integrity of the rock mass is guaranteed, and operation is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a prefabricated middle locking rock mass fissure cutting system with different geometric features. Background technique [0002] The failure of engineering rock mass is usually composed of the joint failure of joints and rock bridges. The spatial positions of joints, cracks and faults (such as crack length, crack inclination and rock bridge length, etc.) will significantly affect the engineering rock mass under external loads. The mechanical properties of the material affect its deformation, strength and stability. A large number of engineering practices at home and abroad have shown that the failure and instability of engineering rock mass is usually due to the redistribution of stress near the excavation surface, which makes the rock mass deform or expand at some structural planes or weak parts, resulting in continuous cracks in the rock mass. Creep, expansion...

AI Technical Summary

Problems solved by technology

Such as CN211250907U, a kind of rock cutting machine that can cut horizontally and vertically, the screw mandrel is driven by the motor to rotate to realize the cutting of cracks of different lengths, but cutting at different angles cannot be realized; although CN201610804880A can process the shape of the workpiece through digital control, its structure is complicated, Difficult to debug and difficult to operate; CN107520892A solves the problem of wire feeding of the emery wire cutting machine, but cannot calibrate and detect whether the cut rock is level during processing; although CN207888935U realizes automatic cutting and improves cutting accuracy, it uses a saw blade to cut , when the saw blade rotates at high speed and contacts the rock mass, micro-cracks may be generated, which affects the accuracy of the experimental results and is difficult to make cracks at different angles; manual cutting with a diamond wire saw takes too long and the accuracy is difficult to control

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