Minimum included angle and minimum sample capacity algorithm for realizing high-precision attitude distribution estimation

A technique for estimating sample size and distribution, applied in the fields of rock mechanics and engineering geology, and can solve problems such as the absence of minimum included angle and minimum sample size.

Pending Publication Date: 2020-02-21
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

Currently, no method exists that can calculate the minimum included angle and minimum sample size, necessitating the development of such a method

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  • Minimum included angle and minimum sample capacity algorithm for realizing high-precision attitude distribution estimation
  • Minimum included angle and minimum sample capacity algorithm for realizing high-precision attitude distribution estimation
  • Minimum included angle and minimum sample capacity algorithm for realizing high-precision attitude distribution estimation

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Embodiment Construction

[0074] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0075] Please refer to figure 1 , an embodiment of the present invention provides a minimum angle and minimum sample size algorithm for realizing high-precision three-dimensional discontinuity distribution estimation, including the following steps:

[0076] Step S1, site sampling for one-dimensional occurrence:

[0077] Arrange multiple measuring lines on the flat part of the fresh outcropping surface of the rock. These measuring lines are the measured measuring lines. The measuring lines must be tightened to ensure that the measuring lines are straight. Approximately evenly distributed at 0 to 90°, the dominant discontinuous surface is the discontinuous surface with an average occurrence; observe the geometric information of each discontinuous surface ...

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Abstract

The invention provides a minimum included angle and minimum sample capacity algorithm for realizing high-precision attitude distribution estimation, which comprises the following steps of: arranging aplurality of measuring lines on a flat part of a fresh outcrop surface of a rock, measuring included angles between different measuring lines and a dominant discontinuous surface, and measuring the attitude of each discontinuous surface intersected with the different measuring lines; randomly selecting a plurality of discontinuous surface individuals intersected with the measuring line to obtaindifferent sample capacities; converting the one-dimensional actually measured discontinuous surface occurrence sample under each included angle and sample capacity combination into three-dimensional discontinuous surface occurrence distribution estimation, and calculating the diameter, central point and gap width distribution of the discontinuous surface in a three-dimensional space; establishinga three-dimensional discontinuous surface network model; setting a virtual measuring line in the same direction as the actually measured measuring line in the three-dimensional discontinuous surface network model, then collecting reconstructed discontinuous surfaces intersected with the virtual measuring line, recording occurrence of the reconstructed discontinuous surfaces, and recording the occurrence as a reproduction occurrence sample; and calculating the statistical difference between the actually measured occurrence sample and the reproduced occurrence sample.

Description

technical field [0001] The invention relates to the fields of rock mechanics and engineering geology, in particular to a minimum angle and minimum sample volume algorithm for realizing high-precision occurrence distribution estimation. Background technique [0002] The rock mass is composed of two basic units, the rock block and the discontinuous surface that divides the rock block. The combination of discontinuous surfaces in space constitutes the rock mass structure, which affects the engineering geological conditions and mechanical properties of the rock mass. For example, the deformation and failure characteristics of the rock mass are restricted by the rock mass structure, and the quality of the rock mass is also controlled by the rock mass structure. [0003] Only a small part of the discontinuous surface developed inside the rock mass can be exposed on the natural outcropping surface of the rock mass or in the artificial excavation, such as the side slope surface, th...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/08
Inventor 黄磊唐辉明苏雪雪夏丁
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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