Loading device for simulating stress of coal rock

Abstract

The invention discloses a loading device for simulating stress of coal rock. The device comprises a strike bar, a pressurizing oil cylinder, a balancing oil cylinder, an incident rod and a transmitting rod, wherein an oil cylinder support is arranged at the bottom of the pressurizing oil cylinder, a confining pressure chamber is arranged at the center of the pressurizing oil cylinder, a coal rock test piece is placed in the center of the confining pressure chamber, a steel jacket is arranged at the periphery of the coal rock test piece, the incident rod and the transmitting rod clamp the steel jacket on the coal rock test piece, stress pieces are arranged on the incident rod and the transmitting rod or stress pieces are arranged on the coal rock test piece, an oil pipe connector is arranged at the bottom of the pressurizing oil cylinder, the oil pipe connector is connected with an oil pipe which is respectively connected to the balancing oil cylinder and a hydraulic manual pump through a diverter, and a one-way valve is arranged on the oil pipe and close to the balancing oil cylinder. The stress condition of the deep underground coal rock layer is truly restored by means of applying a three-dimensional pressure to the coal rock test pipe through the pressurizing oil cylinder and using the strike rod to strike the incident rod to axially apply a pressure to the coal rock test pipe, so that performance parameters of the deep underground coal rock layer are precisely researched.

Description

technical field [0001] The invention relates to an experimental equipment, in particular to a loading device for simulating the stress of coal and rock. Background technique [0002] At present, in the force simulation loading device of coal and rock formations, the ram is often used to directly hit the incident rod to determine the stress state of the coal and rock formations. However, in deep underground coal and rock formations, the coal and rock formations are not only subject to three-dimensional pressure, but also other pressures , such as high water pressure, gas pressure, and high temperature, and the current experimental equipment cannot add these pressures to the simulated environment, resulting in inaccurate simulated environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a device for simulating the force loading of coal and rock, which can truly simulate the underground pressure environment. ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the force simulation loading device of coal and rock formations, the ramming rod is often used to directly hit the incident rod to determine the stress state of the coal and rock formations. However, in deep underground coal and rock formations, the coal and rock formations are not only subject to three-dimensional pressure, but also other pressures , such as high water pressure, gas pressure, and high temperature, and the current experimental equipment cannot add these pressures to the simulated environment, resulting in inaccurate simulated environment

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