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A series of multi-scale square rock structural surface friction angle measurement device and method

A measuring device and technology of structural planes, applied in the engineering field, can solve the problems of inability to test various series of scale structural planes, high accuracy of test results, and inability to fix the bottom plate, and achieve high accuracy of test results, easy operation, and difficulty in turning over and the like. The effect of vibration

Active Publication Date: 2018-01-16
SHAOXING UNIVERSITY
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of the existing friction angle measuring instrument in measuring the friction angle of the rock structural surface that the footwall cannot be fixed, is easy to turn over, and cannot test various series of scale structural surfaces, the present invention provides a series of multi-scale square rocks Device and method for measuring structural surface friction angle, the device can fix the structural surface of the lower plate, is easy to control, and has high accuracy of test results

Method used

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  • A series of multi-scale square rock structural surface friction angle measurement device and method
  • A series of multi-scale square rock structural surface friction angle measurement device and method
  • A series of multi-scale square rock structural surface friction angle measurement device and method

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Embodiment 1

[0027] refer to Figure 1 ~ Figure 3 , a series of multi-scale square rock structural surface friction angle measuring devices, including a frame, a test platform and a fixed assembly 7 under the square rock structural surface, the test platform includes a turntable 2, and one side of the turntable 2 is fixedly installed On the rotating shaft 4, the rotating shaft 4 is rotatably set on the frame, the end of the rotating shaft 4 is linked with the rotating handle 5, and the upper surface of the rotating table 2 is provided with a sample positioning line and a center positioning line. point, the anchor point is the central point of the square rock structure surface, with the anchor point as the origin of the plane coordinate system, two rows of bolt holes 6 are respectively distributed along each diagonal of the square rock structure surface, and each row of bolt holes The adjacent bolt holes are arranged at equal intervals; the square rock structure surface lower wall fixing as...

Embodiment 2

[0032] refer to Figure 1 ~ Figure 3 A method for measuring the friction angle of a multi-scale square rock structural surface, comprising the following steps:

[0033] (a) select the rock face sample 15 of the size to be tested;

[0034] (b) Adjust the rotating handle 5 so that the rotating table 2 is placed flat on the operating table;

[0035] (c) Place the footwall structural surface of the square rock structural surface on the turntable 2 using the sample positioning line 14, requiring the center of the footwall structural surface to coincide with the positioning point of the turntable 2;

[0036] (d) Connect the bottom plate structure surface with the turntable 2 through the bottom bolts 11 of four right-angled fixing plates 13; connect the side bolts 12 of the right-angled fixing plates 13 through the threaded bolt holes until the end of the bolts In close contact with the sample of the structural surface of the lower wall;

[0037] (e) Place the structural surface o...

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Abstract

A series of multi-scale measuring devices for the friction angle of square rock structure surfaces, including a frame, a test platform, and a fixed assembly for the lower plate of a square rock structure surface. It is rotatably set on the frame, and the end of the rotating shaft is linked with the rotating handle. The upper surface of the rotating table is provided with a sample positioning line and a central positioning point. The positioning point is the center point of the square rock structure surface, and the positioning point is the plane coordinate. It is the origin, and two rows of bolt holes are distributed along each diagonal of the square rock structure surface, and the adjacent bolt holes of each row of bolt holes are arranged at equal intervals; Fix the plate, install a vertical angle plate and a plumb line on the turntable, and hang the plumb line at the center of the vertical angle plate. And a method for measuring the friction angle of a series of multi-scale square rock structure surfaces. The invention can fix the structural surface of the lower plate, is easy to control, and has high precision of test results.

Description

technical field [0001] The invention relates to a series of multi-scale measuring devices for the friction angle of square rock structural surfaces, which are suitable for measuring the friction angles of square original rock or model structural surfaces, and the size range of measurable structural surface samples is 100mm×100mm-1000mm×1000mm. The invention belongs to the technical field of engineering. Background technique [0002] The instability and damage of engineering rock mass originate from the structural surface. According to Barton’s structural surface failure theory, the roughness coefficient (JRC) of the structural surface is an important parameter affecting the mechanical properties of the structural surface, and the roughness coefficient (JRC) can be determined by the weight of the structural surface. The friction angle of the rock structure surface under the normal stress is obtained by conversion. The friction angle of the rock structure surface under the no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/24
Inventor 杜时贵罗战友黄曼吕原君伍法权夏才初雍睿
Owner SHAOXING UNIVERSITY
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