Method for copying joint waviness by artificial rock material and experimental method

A technology of rock material and undulation, which is applied in the analysis of materials, preparation of test samples, strength characteristics, etc., can solve the problems of complex process and poor repetition rate, and achieve the effect of improving measurement accuracy.

Inactive Publication Date: 2014-07-16
CENT SOUTH UNIV
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  • Method for copying joint waviness by artificial rock material and experimental method
  • Method for copying joint waviness by artificial rock material and experimental method
  • Method for copying joint waviness by artificial rock material and experimental method

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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] An artificial rock material is used to replicate joint relief and an experimental method, the experimental method comprising the following steps:

[0028] 1) Use the 3D laser scanning method to accurately measure the contour line fluctuation and 3D parameters of the rock mass engineering joint surface, and obtain the joint contour line graph. The specific operation process is as follows: first select the joint surface to be observed and mark the initial position, Select the position of the three-dimensional laser scanner for observing the rock surface, and generate a 5-10m grating frame at the measurement position through the grating transmitter on the instrument, start scanning to obtain the joint contour line graph;

[0029] 2) After obtaining the joint outline graph, the random error generated during the scanning process is re...

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Abstract

The invention discloses a method for copying joint waviness by an artificial rock material and an experimental method. The method includes the following steps: firstly, measuring the joint surface contour line waviness by a three-dimensional laser scanning method; refining a graph and removing noise points from the graph by contour tracking, performing image scaling transformation and coordinate transformation on a joint contour line, and obtaining coordinate values of points on the contour line by an interpolation method; reading joint surface contour line data, digitalizing the joint surface contour line waviness, introducing the digitalized joint surface contour line waviness into a spark cutting control machine, processing a steel block by 2Cr13 alloy steel and making mortar joints; and laying joint mud or mineral clay with different thicknesses and water contents between the mortar joints, and carrying out a mechanical experiment of the joints. The method disclosed by the invention can be used for truly reflecting the physical states of filler rock masses containing joints, the influence of the joints to the strength and deformation properties of the rock masses can be researched by subsequent experiments, and the method is suitable for a variety of rock masses ranging from high-quality ones to broken ones.

Description

technical field [0001] The invention relates to rock-soil mechanics experiment technology, in particular to an experiment method for replicating joint fluctuations with artificial rock materials. Background technique [0002] Affected by crustal movement, natural rock masses will produce a large number of discontinuous surfaces such as joints, beddings, and faults. During the long geological age, under the interaction of water and rock, the rocks between the joints are often weathered and form a layer with a certain thickness. Joint filling, the physical properties and mechanical properties of these joint fillings are often important factors affecting the stability of various rock mass engineering such as tunnels and slopes. [0003] The traditional way to obtain the relief of rock joints is to conduct on-the-spot manual measurement. The commonly used instruments include profile curve meter, tape measure, geological compass, etc. This measurement method is not only...

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Application Information

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IPC IPC(8): G01N1/28G01B11/24G01N3/00
Inventor 曹平欧可曹日红钟涌芳董力玮陈冲王军
Owner CENT SOUTH UNIV
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