A kind of rock stratum mobile model frame loading device and experimental method

Abstract

The invention discloses a loading device and an experimental method for a rock formation mobile model frame. The device includes a cavity formed by a base, a frame, and front and rear guard plates. A simulated rock formation is arranged in the cavity, and a hydraulic oil cylinder is arranged on the upper part of the frame. Manual hydraulic pump, the oil inlet pipe and oil return pipe of the manual hydraulic pump are respectively connected with the oil inlet port and the oil return port of the two-position four-way reversing valve, and the rodless chamber and the rod chamber of the hydraulic cylinder are respectively connected with the two-position four-way reversing valve. The working oil port 1 of the valve is connected with the working oil port 2. There is a manual control valve and a hydraulic gauge on the pipeline connecting the hydraulic cylinder and the two-position four-way reversing valve. The lower part of the piston rod of the hydraulic cylinder is equipped with a rigid metal column. A spring base is provided at the position corresponding to the rigid metal column on the upper surface of the lower simulated rock formation. The invention can realize continuous loading on the simulated rock formation, is beneficial to the compaction of the simulated rock formation, and improves the reliability and accuracy of the experimental results.

Description

Technical field [0001] The invention relates to the field of simulation experiments of rock formations similar to materials, in particular to a loading device and an experiment method of a rock formation movable model frame. Background technique [0002] At present, the traditional rock formation similar material simulation experimental device in the laboratory uses a hydraulic loading device to provide pressure to the simulated rock formation. Since the internal volume of the similar simulation experimental device reaches tens of cubic meters, the above-mentioned experimental loading device has the advantage of saving some materials. However, there are three shortcomings at the same time: First, when the rock formation is excavated, it is easy to cause the pressure head of the hydraulic loading cylinder to separate from the simulated rock formation, which requires constant observation by the experimenter, which causes a waste of manpower; The separation of the hydraulic cylinder...

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Problems solved by technology

However, there are three defects in the following aspects: one is that during the experiment, when the rock formation is excavated, it is easy to cause the pressure head of the hydraulic loading cylinder to separate from the simulated rock formation, which requires the constant observation of the experimenters, resulting in a waste of manpower; During the experiment, the detachment of the hydraulic cylinder from the simulated rock formation will cause the problem that similar materials will not be compacted; the third is that there are certain safety hazards

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