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A Generalized rqd Acquisition Method of Rock Mass Eliminating the Effect of Measurement Blank Area

A rock mass and blank technology, applied in the field of generalized RQD acquisition of rock mass, can solve problems such as calculation deviation and affecting the accuracy of rock mass, and achieve the effect of improving quantity and quality, reducing precision damage, and true and accurate evaluation

Inactive Publication Date: 2019-05-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In addition, when obtaining the discontinuity information of the rock mass, the slope rock mass is covered by vegetation or there is a gravel accumulation on the rock mass, resulting in the measurement blank area problem
The existence of these measurement blank areas makes the calculation of generalized RQD have certain deviations, which in turn affects the accuracy of the overall quality evaluation of rock mass

Method used

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  • A Generalized rqd Acquisition Method of Rock Mass Eliminating the Effect of Measurement Blank Area
  • A Generalized rqd Acquisition Method of Rock Mass Eliminating the Effect of Measurement Blank Area
  • A Generalized rqd Acquisition Method of Rock Mass Eliminating the Effect of Measurement Blank Area

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Embodiment 1

[0061] This embodiment provides a rock mass generalized RQD acquisition method that eliminates the influence of the measurement blank domain, and the method includes the following steps:

[0062] Step S1. For the rock mass to be processed, a three-dimensional model of the rock mass slope is established by using a photogrammetry method.

[0063] Step S2, according to the measured data of the discontinuous surface in the three-dimensional model of the rock mass slope, using the space disc rule, establishing a three-dimensional model of the discontinuous surface of the rock mass.

[0064] For example, the measured data of the discontinuity surface in the 3D model of the rock mass slope in this step includes: the coordinate information of the discontinuity surface characteristic point of the panoramic outcrop, the discontinuity surface inclination, inclination angle, trace endpoint coordinates and trace length.

[0065] The trace in this embodiment is the trace of the discontinuou...

Embodiment 2

[0094] In this embodiment, the method for obtaining generalized RQD of rock mass based on the measured three-dimensional data of the discontinuous surface and eliminating the influence of the measurement blank domain includes the following steps:

[0095] 101. Data preparation

[0096] For example, the experimental data of this embodiment is based on the image data of the rock mass slope obtained by the photogrammetry method in a certain quarry and the relevant control point data on the slope obtained by the control measurement method;

[0097] 102. Establish a 3D model of a discontinuous surface

[0098] Based on the method of photogrammetry, a 3D model of the rock mass slope was established, and the coordinate information of the discontinuous surface feature points of 683 panoramic outcrops was measured on the model, and the inclination, dip angle, and trace endpoint coordinates of the discontinuous surface were obtained through subsequent processing and trace length and ot...

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Abstract

The invention discloses a generalized RQD acquisition method for rock mass which eliminates the influence of measuring blank space, comprising: adopting a photogrammetric method for the rock mass to be treated to establish a three-dimensional model of the rock mass slope; adopting a space disk rule according to the measured data of the model to establish a three-dimensional model of the discontinuous surface of the rock mass; acquiring information of the blank space; setting at least one filler for filling the blank space, obtaining a three-dimensional model of the discontinuous surface havingat least one filler; for the three-dimensional model of the discontinuous surface having at least one filler, selecting the optimal discontinuous surface spacing threshold corresponding to the X-axis, Y-axis and Z-axis direction line groups by traversing method, and obtaining the generalized RQD of the rock mass eliminating the influence of blank space according to the spatial relationship between the lines, and the space disc and the fillers. The invention obtains the generalized RQD of the rock mass eliminating the influence of blank space by the measured data of the discontinuous surface,and may more accurately evaluate the integrity quality of the rock mass.

Description

technical field [0001] The invention relates to a generalized RQD acquisition method of rock mass. Background technique [0002] After the rock mass has undergone geological processes of different periods and sizes, widely distributed discontinuities have been formed inside it. Different from complete rock blocks, the density, occurrence, and opening of the discontinuous surfaces inside the rock mass make the rock mass heterogeneous and anisotropic, which in turn affects the stability of the rock mass. [0003] In the past 40 years, rock mass quality index (RQD) has been widely used by engineers in the construction of various projects such as underground, water conservancy and hydropower, transportation, and slopes, and has played an increasingly important role. The definition of traditional RQD is that the length of the core section greater than 0.1m is accumulated in the core obtained by drilling the drill bit and the core pipe in the rock body, and the ratio of the obtai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
CPCG06F30/20G06T17/05
Inventor 王凤艳丁庆张旭晴王明常牛雪峰杨国东张盈
Owner JILIN UNIV
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