系列尺度岩体结构面形貌渐进覆盖统计方法

doi:10.13722/j.cnki.jrme.2019.0132

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Abstract Systematic and reasonable statistics of the morphology of rock joints are the precondition for representative sampling of different size discontinuities，which directly impacts the validity of the scale effect test on joint shear strength. To overcome the shortcoming of the traditional uniform mesh statistics segmentation method in terms of different scales of rock joints，a progressive coverage statistical method，taking different size sample as unit sample and extracting the statistical samples of the entire rock joint in orthogonal directions with different step distances was proposed for representing the morphology of various sizes of rock joints. Based on the analysis of the basic characteristics of the proposed method，formulas between the sample capacity，coverage and coverage overlap with the advance distance were proposed. Case study shows that，with the propulsion of the unit sample，the sample overlap and a more complete unit sample can be obtained，which covers partial missing area morphology，increases the sample size and improves the accuracy of the whole sample. The progressive undulating morphology of series scale rock joints can be entirely derived by this method，which provides the sampling basis for various size samples.

Key words： rock mechanics series scales rock joints three-dimensional(3D) morphology uniform mesh segmentation method progressive coverage statistical method

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	Articles by authors
	HUANG Man1
	2
	XIA Caichu1
	2
	MA Chengrong2
	ZHANG He2
	LUO Zhanyou3
	XU Changsen 2

Cite this article:

HUANG Man1,2,XIA Caichu1, et al. A progressive coverage statistical method for series scale#br# surface morphology of rock joints[J]. , 2019, 38(8): 1533-1541.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0132 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/I8/1533

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