Dynamic Cluster Grouping Analysis of Occurrence of Structural Plane in Natural Rock Mass

AI Chun-ming; LU Yun; SUN Ping-ping

doi:10.11988/ckyyb.20211311

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Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (5) : 106-110. DOI: 10.11988/ckyyb.20211311

Rock-Soil Engineering

Dynamic Cluster Grouping Analysis of Occurrence of Structural Plane in Natural Rock Mass

AI Chun-ming^1,2, LU Yun³, SUN Ping-ping^1,2

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Abstract

The grouping of natural structural planes is critical in rock mass engineering. Traditional grouping methods are inaccurate in grouping structural planes with near-vertical or near-horizontal occurrence. In view of this, a dynamic clustering analysis method for structural planes is proposed. The clustering center is determined based on the dip angle and inclination of structural planes, and the grouping result is obtained by iterative calculation based on the angle between structural planes. The method was applied to group 303 structural planes in Bayan Obo East mine and compared with the fast clustering method. Three dominant groups of structural planes were identified after the grouping of 303 structural planes, which agree well with the isodensity map of structural plane occurrence. The dynamic clustering analysis method is not only simple and easy to calculate but also overcomes the limitations of traditional methods in quantification, making the grouping of structural planes more accurate and practically significant.

Key words

natural rock mass / structural plane / dominant occurrence / dynamic clustering

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AI Chun-ming, LU Yun, SUN Ping-ping. Dynamic Cluster Grouping Analysis of Occurrence of Structural Plane in Natural Rock Mass[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(5): 106-110 https://doi.org/10.11988/ckyyb.20211311

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