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Device and method for testing bearing capacity of single-row group columns in horizontal goaf under biaxial loading

A technology of testing device and loading device, which is applied in the direction of mechanical bearing testing, measuring device, elastic testing, etc. It can solve the problems that the overall bearing capacity of stope group columns is difficult to realize, and group column samples cannot be loaded.

Inactive Publication Date: 2021-06-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is difficult to monitor the overall bearing capacity of stope group columns on site, and can only rely on small-sized group column samples in the laboratory to test
Traditional testing machines can only load a single column sample, but cannot load a group of column samples

Method used

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  • Device and method for testing bearing capacity of single-row group columns in horizontal goaf under biaxial loading
  • Device and method for testing bearing capacity of single-row group columns in horizontal goaf under biaxial loading
  • Device and method for testing bearing capacity of single-row group columns in horizontal goaf under biaxial loading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like Figure 1-8 As shown, a test device for the bearing capacity of a single-row column group in a horizontal goaf under biaxial loading, including: a testing machine base 1, a frame 2, a lower platen 3, an upper platen 4, an upper platen 5, and a workbench 6. Horizontal frame 7, vertical hydraulic push shaft 8, vertical hydraulic pump 9, pressure sensor 10, force loading device 11, protective ring 12, vertical push shaft casing 13, fixing ring 14, screw 15, horizontal hydraulic push shaft 16. Horizontal pressure plate 17, horizontal hydraulic pump 18, side frame 19, telescopic column 20, pulley 21, slide rail 22.

[0041] The base 1 is provided with four protective rings 12, each protective ring 12 is equipped with a frame 2, one end of the frame 2 is connected with the base 1, the other end is connected with the horizontal frame 7, and the bottom of the horizontal frame 7 is connected with five The horizontal hydraulic push shaft 8 is connected, and each horizontal hy...

Embodiment 2

[0051] like figure 1 , 2 , 4, and 5, a test device and method for the bearing capacity of a single-row group column in a horizontal goaf under biaxial loading is to include: a testing machine base 1, a frame 2, a lower platen 3, an upper platen 4, Upper platen 5, workbench 6, horizontal frame 7, vertical hydraulic push shaft 8, vertical hydraulic pump 9, pressure sensor 10, force loading device 11, protection ring 12, vertical push shaft housing 13, fixing ring 14, screws 15. Horizontal hydraulic push shaft 16, horizontal pressure plate 17, horizontal hydraulic pump 18, side frame 19, telescopic column 20, pulley 21, slide rail 22.

[0052] The base 1 is provided with four protective rings 12, each protective ring 12 is equipped with a frame 2, one end of the frame 2 is connected with the base 1, the other end is connected with the horizontal frame 7, and the bottom of the horizontal frame 7 is connected with five The horizontal hydraulic push shaft 8 is connected, and each ...

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Abstract

The invention discloses a device and a method for testing the bearing capacity of single-row group columns in a horizontal goaf under biaxial loading. Four fixing rings are arranged on a testing machine base of the device, a machine frame is installed in each fixing ring, the bottom ends of the machine frames are connected with the base, the top ends of the machine frames are connected with a transverse frame, sliding rails are arranged on the two sides of the base, and side frames are slidably connected with the base through telescopic stand columns; a vertical force loading device and a horizontal force loading device are respectively arranged at the lower part of the transverse frame and the inner side of the side frame; the vertical force loading device comprises a vertical hydraulic push shaft, a vertical hydraulic pump and a pressure sensor; the horizontal force loading device comprises a transverse hydraulic pushing shaft, a transverse pressing plate, a transverse hydraulic pump and a pressure sensor. Synchronous loading of a plurality of coal, rock, filling bodies, concrete, coal-filling and rock-filling test pieces can be achieved, the overall bearing capacity of the single-row group column system of the horizontal goaf under the biaxial compression condition can be obtained, and the mutual influence relation between group column individuals of the horizontal goaf is obtained.

Description

technical field [0001] The invention relates to a test device and method for the bearing capacity of a single-row column group in a horizontal goaf under biaxial loading, in particular to a test device and method for realizing multiple coal, rock, filling body, concrete, coal-fill, rock -A device and method for synchronously loading test pieces, belonging to the technical field of mining rock mechanics tests. Background technique [0002] Due to the backwardness of the mining methods in the old mining period, a large number of coal pillars have been formed in many mines in my country, mainly including: knife column coal pillars, room pillar coal pillars, strip coal pillars, and short wall coal pillars Coal pillars, roadway-mined coal pillars, storehouse-style coal pillars, jump-mined coal pillars, etc., are densely distributed in space, have different shapes, interact with each other, are intricate and of different sizes, and form coal pillars in the form of communities. colu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/02
CPCG01N3/12G01N3/02G01N2203/0019G01N2203/0048G01N2203/0254G01M5/0058G01L5/0009G01M13/04
Inventor 白锦文史旭东崔博强杨欣宇冯国瑞王凯毋皓田
Owner TAIYUAN UNIV OF TECH