A 3D shape characterization method for joints

A three-dimensional morphology and morphology characterization technology, which is applied in the fields of permeability/surface area analysis, suspension and porous material analysis, instruments, etc., can solve problems such as one-sidedness, many characterization parameters, and difficult engineering applications

Active Publication Date: 2020-10-23
GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Another purpose of the present invention is to solve the technical problem that the existing morphology characterization method has many and one-sided characterization parameters and is difficult to carry out engineering application

Method used

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  • A 3D shape characterization method for joints
  • A 3D shape characterization method for joints
  • A 3D shape characterization method for joints

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Embodiment 1

[0023] Point cloud collection of rock joints. figure 1 It is a three-dimensional non-contact high-speed and high-precision laser scanning system. The instrument is composed of a sensor head 1, a controller 4, and a data collector. The rock mass sample 2 is placed on the displacement platform 3 that can move along the x and y directions. The undulations on the surface of the rock structure surface are converted into optical signals by the laser displacement meter, and the optical signals are converted into electrical signals by the CCD. The changing undulating shape is processed by changing electrical signals, and finally stored in the form of point sets by the data acquisition software LK-Navigator. The displacement table drives the rock sample to move, and the direction and route of the movement cooperate with the scanner to obtain the coordinates of the points on the surface topography of the structural surface.

[0024] After using the 3D laser scanner to obtain the 3D poi...

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Abstract

The invention discloses a joint three-dimensional shape representation method which uses an apparent surface area ratio as a unique core shape representation parameter for three-dimensional shape representation, fully consideres the influence of force and seepage direction, and obtains different roughness for different directions of the same joint surface. The method is simple and clear, and is convenient for engineering applications.

Description

technical field [0001] The invention relates to a rock joint morphology characterization method, in particular to a three-dimensional joint surface roughness characterization method that can be used for evaluating rock joint shear strength and permeability characteristics. [0002] technical background [0003] In recent years, with the construction of large-scale projects such as water conservancy and hydropower, nuclear waste storage, and petroleum mining, the geological environment in which engineering rock masses are located has become more and more complex. The shear strength of rock joints and its permeability characteristics, as factors that have an important impact on the stability of rock mass engineering, have attracted more and more attention from researchers. The interaction between ground stress and groundwater in rock mass often directly determines the stability and safety of engineering structures. . [0004] Due to the importance of joint morphology to joint ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01B11/30G01B11/28G01B11/24G01N33/24G01N15/08
CPCG01B11/24G01B11/28G01B11/30G01N15/08G01N33/24
Inventor侯迪邓会凯李莎莎熊杰付国栋
OwnerGUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER