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Preparation method of irregular columnar jointed rock mass sample with nested interlayer dislocation zone

A columnar joint and sample preparation technology is applied in the field of irregular columnar joint rock mass sample preparation and rock mass sample preparation, which can solve the problem that the interaction between columnar joints and interlayer dislocation zones cannot be considered.

Active Publication Date: 2021-05-11
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: In view of the problem that the current sample preparation method cannot consider the interaction between columnar joints and interlayer dislocation zones, the present invention provides a method for preparing irregular columnar joint rock mass samples with nested interlayer dislocation zones

Method used

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  • Preparation method of irregular columnar jointed rock mass sample with nested interlayer dislocation zone
  • Preparation method of irregular columnar jointed rock mass sample with nested interlayer dislocation zone
  • Preparation method of irregular columnar jointed rock mass sample with nested interlayer dislocation zone

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preparation example Construction

[0019] Such as figure 1 , a method for preparing an irregular columnar jointed rock mass sample with a nested interlayer dislocation zone of the present invention, comprising the following steps:

[0020] (1) Make an internal mold according to the structural characteristics of the rock mass at the engineering site. The internal mold includes a three-dimensional polygonal joint surface grid for simulating the structural characteristics of columnar joints. The joint surface grid is nested with interlayer staggered belt simulation components. Among them, the joint surface grid is made of water-soluble materials, and the staggered zone simulation components are made of soluble materials;

[0021] The internal mold can be obtained by the following method: First, determine the structural characteristics of the columnar joints and the structural characteristics of the interlayer dislocation zone according to the structural characteristics of the rock mass at the engineering site, and...

Embodiment

[0029] (1) Making the external mold of the columnar jointed rock sample with interlayer dislocation zone

[0030] Such as figure 2 , the external mold includes a bottom plate 1, a top plate 2, two long-side side plates 3, and two square short-side side plates 4; wherein, the bottom plate 1 and the two long-side side plates 3 are fixed by bottom plate bolts 5, and the top plate 2 and the two long side plates The side panels 3 are fixed by top plate bolts 6 , the two long side panels 3 are fixed by bolts 7 , and the short side panels 4 and long side panels 3 are fixed by bolts 8 .

[0031] (2) Preparation of internal mold

[0032] Draw the 3D model of the internal mold in the OpenSCAD software, set the columnar joints as regular hexagons with a side length of 5mm, the thickness of the joint surface is 1mm, the angle between the interlayer dislocation zone and the columnar joints is 60°, and the thickness of the dislocation zone is 4mm. The interlayer dislocation zone is locat...

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Abstract

The invention discloses a method for preparing an irregular columnar joint rock mass sample with a nested interlayer dislocation zone, which comprises the following steps: making an internal mold according to the structural characteristics of the rock mass at the engineering site, and the internal mold includes a columnar joint structure feature for simulating The three-dimensional polygonal joint surface grid of the joint surface grid is nested with interlayer fault zone simulation components, wherein the joint surface grid is made of water-soluble materials, and the fault zone simulation components are made of soluble materials; Pouring joint column similar material in the joint surface grid, after the final setting, dissolve the joint surface grid with water, then pour joint surface similar material in the dissolved part, and dissolve the staggered band simulation member with solvent after the final setting of the part , and then pour the similar material of the dislocation zone into the dissolved cavity; finally maintain and obtain the sample. This method can simply and conveniently prepare columnar jointed rock mass samples with interlayer dislocation zone, which provides an experimental basis for the study of mechanical seepage and permeability of this type of rock mass.

Description

technical field [0001] The invention relates to a method for preparing a rock mass sample, in particular to a method for preparing an irregular columnar jointed rock mass sample with a nested interlayer staggered zone, and belongs to the fields of rock mass mechanics and rock engineering. Background technique [0002] During the condensation process after the volcanic eruption, the volume of basalt shrinks rapidly to form basalt joint columns with straight joint planes and parallel to each other. The basalt columns are mostly quadrangular, pentagonal, and hexagonal. These polygonal joints are called columnar joints. Under the action of geological tectonic movement, the rock mass usually forms an interlayer dislocation zone. The rock in the interlayer dislocation zone is crushed and broken, and its mechanical properties are much weaker than that of intact rock blocks. Columnar joints and interlayer dislocation zones are common in basalt rock mass, and the two influence each o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/36
CPCG01N1/36G01N2001/366
Inventor 徐卫亚黄威张涛王环玲胡明涛
Owner HOHAI UNIV
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