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Experimental method and apparatus for shearing of structural surface of columnar jointing

A columnar joint and experimental device technology, applied in the field of rock mechanics, can solve the problems of difficult positioning of irregular joint surfaces, and achieve the effects of simple structure, easy positioning and convenient operation.

Active Publication Date: 2013-08-07
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the above-mentioned problem that prior art exists, provide a kind of experimental device of shearing of columnar joint structure plane, also provide a kind of experimental method of shearing of columnar joint structure plane, solve the problems in the prior art Difficult to locate irregular joint surfaces in regular rock blocks

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  • Experimental method and apparatus for shearing of structural surface of columnar jointing
  • Experimental method and apparatus for shearing of structural surface of columnar jointing

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Embodiment Construction

[0020] An experimental device for shearing of columnar joint structural planes, including an upper shear box 1 (150mm×150mm×75mm) and a lower shear box 2 (150mm×150mm×75mm), and five vertical The screw port 3 can be inserted into the vertical screw 4, and the preliminary adjustment of the columnar joint rock blocks of different sizes can be realized through screws of different lengths (2cm, 4cm, 6cm, 8cm); five horizontal screw ports 5 are distributed at both ends of the lower shear box, The adjustment rod 6 can be inserted, and the diameter of the horizontal screw port 5 is slightly larger than the diameter of the adjustment rod 6, so that the adjustment rod 6 can be removed after the adjustment is completed. By rotating the adjustment rod 6, the thread on the adjustment rod 6 and the vertical screw 4 can be realized. The rotation between them can realize the fine-tuning of the position of the rock block, so that the structural surface is located in the shear joint (the height...

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Abstract

The invention discloses an experimental method for shearing of a structural surface of a columnar jointing. The method comprises adjusting a rock structural surface to be located in a shearing seam of upper and lower shearing boxes; sleeving screw sleeves to five internally-inserted vertical screws, using plastic films to separate and wrap; vertically moving the internally-inserted vertical screws through adjusting rods, so that the structural surface of the columnar jointing rock is located between the shearing seam; selecting proportional epoxy resin mortar to form epoxy resin mortar; and pouring the epoxy resin mortar into the upper and lower shearing boxes for cooling and solidification. The invention further discloses an experimental apparatus comprises the upper and lower shearing boxes, the internally-inserted vertical screws and the adjusting rods, wherein a bottom of the lower shearing box is provided with vertical screw holes, walls of the lower shearing box are provided with horizontal screw holes, and contacted parts of the adjusting rods and the internally-inserted vertical screws form worm structures. According to the invention, fine adjustment of the rock position can be realized, a surface of the epoxy resin mortar can be always maintain as a plain, a molding is relatively good, problems of rock sinking in cement mortar can be solved, and thus the structural surface of the rock can be easily positioned.

Description

technical field [0001] The invention belongs to the field of rock mechanics, in particular to an experimental method for shearing of columnar joint structural planes, and also relates to an experimental device for shearing of columnar joint structural planes, which is suitable for shearing when irregular rock blocks contain irregular joint planes experimental occasions. Background technique [0002] There are a large number of structural planes in the rock mass, which makes the rock mass easily deformed and damaged along these structural planes. Therefore, the mechanical properties of the structural planes, especially the determination of the shear strength, have always been one of the key points in the study of rock mass mechanical properties. The upper and lower shear boxes of the traditional shear instrument are mainly designed for the characteristics of the soil. For rocks, such as columnar joints, irregular blocks account for the majority, and it is difficult to conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
Inventor 冯夏庭
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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