Combined type geomechanics model test stand device

Abstract

The invention relates to a compound geomechanics model test platform which is formed by steel platform body connected with bottom disk by high strength friction grip bolt. The box type platform is formed by box type steel casting connected with the angle unit at corner by the high strength friction grip bolt. The box type steel casting is formed by a unit box casting and a multi-units box casting, wherein the unit box casting is a square box with hollow structure and front port; the four sides of the unit box casting arranges the high strength friction grip bolt connecting hole and the front side arranges line drilling breather; the multi-units box casting is formed by at least two or a plurality of multi-units box castings; the angle unit is hollow with ports on the adjacent two sides and the friction grip bolt connecting hole on other sides; the bottom disk is formed by parallel connecting the section steel plates with bolt groove.

Description

technical field [0001] The invention relates to a geomechanics model test device used in the fields of energy, water conservancy, mining and traffic engineering, in particular to a combined geomechanics model test bench device. Background technique [0002] The 21st century is the century of rapid development of China's engineering construction. In the new century, the development of large-scale projects such as water conservancy, hydropower, energy, and transportation has become the focus of my country's economic construction. With the continuous development of the national economy and the implementation of the western development strategy, my country has ushered in the peak period of large-scale engineering construction, such as the Three Gorges, Longtan, Xiluodu, South-to-North Water Diversion and other large-scale water conservancy and hydropower projects; Large-scale energy projects such as power-to-east transmission; large-scale transportation projects such as the Qingh...

AI Technical Summary

Problems solved by technology

[0005] These two sets of devices have been applied in the surrounding rock stability and support tests of underground powerhouse caverns of some hydropower stations. The main problems are: the size of the model is small, the size of the model frame is fixed, and it cannot be adjusted according to the test scale. At the same time, the device cannot 3D test

[0006] (2) The 5th issue of 2002 "Journal of Water Conservancy" introduced a model test frame, which is mainly composed of vertical columns, closed steel structure ring beams, and supporting steel frames. The size of the test frame is relatively large, and the main problems The lateral deflection of the test frame is large, and the overall rigidity needs to be further strengthened

The main problem with this device is that the size of the model bench is fixed and cannot be adjusted according to the test range, and the scale of the model test is not large

[0008] (4) The 6th issue of "Modern Tunnel Technology" in 2003 introduced a frame-beam test bench welded by section steel. This bench can carry out quasi-plane strain tests, but the lateral deflection of the bench is relatively large. It is easy to change the boundary conditions of the test

At the same time, the size of the test device is fixed and cannot be adjusted according to the test range

[0009] (5) The 21st issue of "Journal of Rock Mechanics and Engineering" in 2004 introduced a roadway plane strain model test bench. The bench is vertically arranged, and the size of the bench device is fixed and cannot be adjusted according to the test range.

[0011] (1) Most of the test devices are flat test benches with fixed dimensions, which cannot be effectively adjusted according to the model test range

[0012] (2) The model test bench is mostly welded with section steel, and the structure is a plate beam or frame beam structure. Under the action of lateral pressure, the lateral deflection deformation of the bench is usually large, which may easily cause changes in the test boundary conditions

Images