Angle-variable space block body sliding model testing platform and using method thereof

Abstract

The invention relates to the technical field of geotechnical engineering, in particular to an angle-variable space block body sliding model testing platform and a using method thereof. The platform comprises a baseboard and an inclined table, the baseboard is connected with the inclined table through a rotating shaft, a screw and a hand wheel connected with the screw are arranged at the upper end of the baseboard, and the screw is driven to rotate by rotating the hand wheel, so that the inclined table rotates with the rotating shaft as the center. An angle scale is arranged between the baseboard and the inclined table for accurately measuring the included angle between the baseboard and the inclined table, a rotating table capable of rotating freely is arranged on the inclined table, a locking nail is arranged on the rotating table, the angle of the rotating table is adjusted through the locking nail, the rotating table can be connected with molds with different friction coefficients, and foot margins are arranged at the lower end of the baseboard which is kept to be horizontal through the four foot margins. The angle-variable space block body sliding model testing platform and the using method lead experiments to be repeatable, supplements experiment results aiming at results of numerical simulation through relative experiments based on the testing platform and the using method, and provides the experiments complementariness and confirmation.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a method for using a variable-angle space block sliding model test platform. Background technique [0002] With the continuous development of highways, railways, tunnels and other projects in our country, the stability and safety of rock masses and rock blocks have become the focus and difficulty of theoretical research and field construction. Fractured rock mass is a common unfavorable rock mass in engineering. The rock mass is neither a continuum nor a homogeneous body. There are a large number of internal defects such as micropores and microcracks in the rock, and there are discontinuities to varying degrees. During the disturbance process of engineering excavation, damage to rock mass structure is very easy to occur, and sometimes even engineering disasters are induced, all of which are related to rock mass structure. In addition, due to the incomplete under...

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Problems solved by technology

[0005] At present, most of the research on the movable blocks in the rock mass adopts numerical simulation analysis methods, and the sliding angle and the sliding process are determined according to the structure plane and some parameters of the rock blocks. The platform has the disadvantage of rotating at several fixed angles. Due to the randomness of the sliding angle of the block in the actual project, it is impossible to simulate the sliding at any angle in the space of the rock block.

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