Anchoring simulation experiment device for coal mine tunnel side anchor bolt or anchor cable and experimental method for anchoring simulation experiment device

Abstract

The invention discloses an anchoring simulation experiment device for a coal mine tunnel side anchor bolt or an anchor cable. The anchoring simulation experiment device comprises an experiment platform, a pressurizing mechanism and a simulation experiment box, wherein the experiment platform comprises a rectangular framework, an experiment panel and four supporting plates; the four supporting plates are vertically arranged and are enclosed into a cuboid structure; anchoring holes are formed in the bottom of two sides of each supporting plate. The anchoring simulation experiment device disclosed by the invention is an experimental device which can simulate the supporting of the tunnel side anchor bolt or anchor cable in a three-dimensional state; after the three-dimensional simulation experiment platform is equipped with prepared similar materials, the anchor bolt or the anchor cable can be driven into a simulation experiment box body in front of the experimental platform by a roof bolter through limiting holes for controlling row spacing of the anchor bolts or the anchor cables on an anchoring hole space control baffle; under laboratory conditions, the anchoring process of the anchor bolts or the anchor cables with different pore diameters and row spaces at the coal mine tunnel side is simulated, which promotes the research on the supporting of the tunnel anchor bolt or the anchor cable.

Description

technical field [0001] The invention relates to a coal mine roadway side bolt or anchor cable anchorage simulation experiment device and an experiment method thereof. Background technique [0002] The simulation experiment method of similar materials has always been the main experimental method in the experimental research of mining engineering. Its essence is to use materials with similar mechanical properties to the model on the test bench to shrink the experimental model according to a certain ratio of geometric similarity. The model can be excavated into various projects, such as coal mine roadways, chambers, and longwall stopes. Through the simulation and experimental observation of the engineering process, the mechanical phenomena such as deformation, movement, and destruction of the surrounding rock mass of the project can be studied, and Analyze the forces acting on the supporting structure. The traditional similar material simulation experiment method of roadway bo...

AI Technical Summary

Problems solved by technology

The traditional similar material simulation experiment method of roadway bolt (cable) support effect generally uses a plane simulation experiment device, which can only study a section of the prototype, but for the research object with changes in three-dimensional stress, the plane simulation experiment platform There is irrationality

The plane test bench cannot simulate the process of bolting (cables) in the roadway to obtain the force of the anchor (cables) and the quality inspection of the support: its clamping structure is also unreasonable. After long-term tests , the channel steel will cause different degrees of bending, and the surface of the model will be uneven after installation, which will affect the similarity of the model; the model frame is inconvenient to lift and lower, and the lifting process is not easy to control, often after forming, vibration is generated due to improper speed control, which damages the internal structure of the model. The experimental structure is not accurate enough, which will affect the safety prevention of coal mine roadway support and cause safety accidents

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