Scale Dependence of Waviness and Unevenness of Natural Rock Joints through Fractal Analysis

Joint Authors

Yang, Hongwei
Li, Yingchun
Sun, Shengyue

Source

Geofluids

Issue

Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-18, 18 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2020-08-25

Country of Publication

Egypt

No. of Pages

18

Main Subjects

Physics

Abstract EN

The scale dependence of surface roughness is critical in characterising the hydromechanical properties of field-scale rock joints but is still not well understood, particularly when different orders of roughness are considered.

We experimentally reveal the scale dependence of two-order roughness, i.e., waviness and unevenness through fractal parameters using the triangular prism surface area method (TPM).

The surfaces of three natural joints of granite with the same dimension of 1000 mm×1000 mm are digitised using a 3D laser scanner at three different measurement resolutions.

Waviness and unevenness are quantitatively separated by considering the area variation of joint surface as grid size changes.

The corresponding fractal dimensions of waviness and unevenness in sampling window sizes ranging from 100 mm×100 mm to 1000 mm×1000 mm at an interval of 100 mm×100 mm are determined.

We find that both the fractal dimensions of waviness and unevenness vary as the window size increases.

No obvious stationarity threshold has been found for the three rock joint samples, indicating the surface roughness of natural rock joints should be quantified at the scale of the rock mass in the field.

American Psychological Association (APA)

Li, Yingchun& Sun, Shengyue& Yang, Hongwei. 2020. Scale Dependence of Waviness and Unevenness of Natural Rock Joints through Fractal Analysis. Geofluids،Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1165454

Modern Language Association (MLA)

Li, Yingchun…[et al.]. Scale Dependence of Waviness and Unevenness of Natural Rock Joints through Fractal Analysis. Geofluids No. 2020 (2020), pp.1-18.
https://search.emarefa.net/detail/BIM-1165454

American Medical Association (AMA)

Li, Yingchun& Sun, Shengyue& Yang, Hongwei. Scale Dependence of Waviness and Unevenness of Natural Rock Joints through Fractal Analysis. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1165454

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1165454