Method for confirming anisotropism of jointed rock mass

A jointed rock mass, anisotropic technology, applied in the direction of using stable shear force to test material strength, using stable tension/pressure test material strength, instruments, etc., can solve problems such as complex theoretical system

Inactive Publication Date: 2013-05-22
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of many assumptions and complex theoretical systems in the traditional theoretical analysis method for studying the an...

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  • Method for confirming anisotropism of jointed rock mass
  • Method for confirming anisotropism of jointed rock mass
  • Method for confirming anisotropism of jointed rock mass

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Embodiment Construction

[0027] Taking a high rock slope of an open-pit iron mine as an example, a method for determining the anisotropy of jointed rock mass is introduced, which includes the following steps:

[0028] (1) Conduct indoor rock mechanics tests to obtain various macroscopic parameters of rocks sampled on site. Through the indoor uniaxial compression test, the uniaxial compressive strength σ of the rock is obtained ucs , elastic modulus E, and Poisson's ratio ν; through the indoor triaxial compression test, the compressive strength under different confining pressures can be obtained, and the Mohr's circle and strength envelope can be drawn to obtain the cohesion c and internal friction angle of the rock .

[0029] Table 1 shows the macro parameters of the rock obtained from the indoor mechanical test after the rock (dolomite) sample was retrieved from the site.

[0030] (2) Carry out indoor joint mechanics tests to obtain various macroscopic parameters of joints sampled on site. The shea...

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Abstract

The invention provides a method for confirming the anisotropism of jointed rock mass. The method comprises the following steps of: firstly building the multi-scale jointed rock mass capable of sufficiently reflecting the rock mechanical property, the joint mechanical property and the joint spatial distribution characteristic, wherein the jointed rock mass with different scales comprises three groups of samples, and the long axial directions of the samples are respectively along the X-direction, the Y-direction and the Z-direction; carrying out virtual uniaxial compression loading along the long axial directions of various kinds of jointed rock mass to obtain a stress-strain curve, and extracting the mechanical parameters of the jointed rock mass along the X-direction, the Y-direction and the Z-direction, i.e. the uniaxial compressive strength, the elasticity modulus and the like; and building an anisotropism index Ksi, and confirming the anisotropism of the mechanical parameters of the jointed rock mass along the different axial directions, i.e. the uniaxial compressive strength, the elasticity modulus and the like under different scales, so that the anisotropic characteristics of the jointed rock mass can be quantitatively researched. The invention provides a method which is simple in principle, convenient to operate, low in cost and good in use effect, so that the anisotropic characteristics of the jointed rock mass can be confirmed.

Description

Technical field: [0001] The invention relates to a method for determining the anisotropy of jointed rock mass, which belongs to the field of research on the mechanical properties of geotechnical engineering materials, and is applicable to the research on the mechanical properties of various rock engineering such as slopes, tunnels, and dam foundations. technical background: [0002] The rock mass has a very long history of existence and has been subjected to many geological tectonic actions. The modes and characteristics of each geological tectonic action are different, thus forming multiple groups of structural planes with different sizes and directions. Therefore, the existing rock mass It is a rock mass cut by multiple structural planes of different periods and properties. The cutting of these structural planes caused the discontinuity of the rock mass, which obviously changed the mechanical characteristics of the rock mass, resulting in the obvious directionality of the ...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/24G01N15/00
Inventor 周喻吴顺川高永涛严琼
Owner UNIV OF SCI & TECH BEIJING
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