Preparation method of similar simulation model for roadway support test
A similar simulation and roadway support technology, applied in tunnels, tunnel linings, mining equipment, etc., can solve problems such as the difficulty in laying anchor rods and anchor cables, affecting the accuracy of tests, etc., to achieve improved support methods, fast model laying, Inexpensive effect
Inactive Publication Date: 2015-09-30
CHINA UNIV OF MINING & TECH
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[0005] The purpose of the present invention is to design a method for preparing a test block by using a template as a medium for the difficulty in laying anchor rods and anchor cables in the existing roadway simulation test model manufacturing and affecting the accuracy of the test. Method for preparing similar simulation models for roadway support tests installed on test stands
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Such as Figure 1-3 shown.
[0024] A method for preparing a similar simulation model for roadway support test, which comprises the following steps:
[0025] First, design a figure 1 The main steel module (arch shape) of the roadway is shown. The steel module is composed of a bottom plate 3, an outer shell 4, an inner shell 1 and a foam board 2. The shape of the inner shell 1 is reduced in proportion to the shape of the roadway and installed at the center of the bottom plate 3. , the foam board 2 wraps the surface of the inner shell 1 so that the tails of the anchor rods and anchor cables can be inserted therein, and the outer shell 4 is arranged along the outer edge of the bottom plate 3 to constrain the laid material to have the same shape as the bottom plate;
[0026] In the second step, when laying multiple layers of similar materials,...
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A preparation method of an analog simulation model used for a roadway supporting test is characterized by comprising the following steps: (1) spreading materials in a steel template which is arranged in an inclined mode and is in a roadway shape, when materials are spread to a bolt-mesh-anchor interval minimized according to the ratio of similitude, anchor rods and anchor cable simulation material pieces are laid, materials continue to be spread, when the height reaches the bolt-mesh-anchor interval, anchor rods and anchor cable simulation material pieces are arranged again, the procedure is conducted repeatedly until the speculated thickness of a simulated model is reached, and finally the template and foaming plates are detached after drying; (2) materials are spread on an analog simulation testing frame to reach a certain thickness, and a block body with a laneway is taken out and is placed on the analog simulation testing frame vertically; (3) materials continue to be spread around the block body until reaching designated height according to the simulation theory; (4) a lockset is adjusted to apply pre-tightening force on the anchor rods and the anchor cables, and then metal meshes and support simulation material pieces are arranged. The preparation method is simple in manufacture and low in manufacture cost, utilizes a plurality of steel templates to manufacture block bodies at the same time, can meet requirements of batch utilization in a model test, and is quick in model laying and high in testing efficiency.
Description
technical field [0001] The invention relates to a mine technology, in particular to a mine roadway support test technology, in particular to a method for preparing a similar simulation model for a roadway support test. Background technique [0002] How to ensure the safe and efficient mining of mines has become a major issue related to national energy security. At present, with the increase of the depth of coal mining and the expansion of the mining area, the rock burst disaster has affected most of the mining areas in my country, and the frequency and intensity of its occurrence are increasing, and the degree of harm is becoming more and more serious. A problem that urgently needs to be solved in the process. Shock mine pressure is characterized by the sudden and violent release of the elastic energy accumulated in the coal rock mass, and the power throws the coal rock to the roadway or stope, causing the coal rock mass to vibrate and destroy strongly, causing disasters su...
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IPC IPC(8): E21D20/00E21D11/00
Inventor 巩思园王桂峰窦林名李振雷曹安业贺虎
Owner CHINA UNIV OF MINING & TECH