Testing device for tensile-shear strength of anchor rod and testing method
A technology of strength test and bolt, applied in the direction of measuring device, strength characteristics, testing material strength by applying stable shear force, etc., which can solve the lack of testing the tensile-shear composite deformation strength of bolt and the lack of tensile-shear strength test platform, etc. question
Inactive Publication Date: 2019-11-08
缪协兴
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Problems solved by technology
However, there is still a lack of test equipment for testing the tensile-shear composite deformation strength of bolts, especially a tensile-shear strength test platform that can simulate the actual support state of bolts in coal mines.
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] Such as Figure 1 to Figure 5 Shown, a kind of bolt tension-shear strength test device, comprises the cuboid frame structure that is made up of anchor wall 1, reaction force wall 4 and four upright columns 5, and between described anchor wall 1 and described reaction force wall 4 also arranges successively There are shear walls 2 and tensile shear sliders 3 that are slidably connected to the four columns 5. The tensile shear sliders 3 are provided with ...
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The invention discloses a testing device for the tensile-shear strength of an anchor rod and a testing method. The testing device comprises a cuboid frame structure composed of an anchoring wall, a reaction wall and four columns, four shear walls slidingly connected with the four columns and tensile-shear slide blocks are further arranged between the anchoring wall and the reaction wall in sequence, and the tensile-shear slide blocks are provided with four strip-shaped holes for the columns to penetrate through; each of the middles of the anchoring wall, the reaction wall and the tensile-shearslide blocks is provided with a through hole for the anchor rod for testing to penetrate through, and the two ends of the anchor rod penetrate out of the anchoring wall and the tensile-shear slide blocks respectively and are provided with trays and nuts. A support of an external anchoring segment is simulated, the testing device can be used for testing the tensile-shear composite deformation strength of the anchor rod, and a reliable basic testing platform and data information are provided for a supporting theory and supporting design of the anchor rod of a coal mine.
Description
technical field [0001] The invention relates to the field of anchor rod tensile-shear strength test devices, in particular to an anchor rod tensile-shear strength test device and a test method. Background technique [0002] At present, most of the surrounding rocks of underground coal mine roadways in my country are supported by bolts, and the amount of bolts used is very large, but disasters and accidents due to failure of bolt support also occur from time to time. On the other hand, because the design strength of bolt support is too high, resulting in excessive support, the waste of bolt use is very serious. One of the reasons for these problems is the lack of reliable bolt strength testing methods, and the lack of reliable basic test data for bolt support design. According to the failure accident analysis of bolt support in coal mines, it can be seen that due to the shear deformation of the surrounding rock, the strength (tensile) limit of the bolt will decrease signific...
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IPC IPC(8): G01N3/08G01N3/24
CPCG01N3/08G01N3/24G01N2203/0026
Inventor 缪协兴
Owner 缪协兴