基于分形理论的钙质土颗粒破碎状态演化研究

doi:10.13722/j.cnki.jrme.2020.0591

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Abstract Particle breakage will change the particle size distribution(PSD)，which can significantly affect the physical and mechanical properties of corresponding soils. In this study，a series of impact load tests were performed to investigate the evolution of PSD in breakage state for uniformly and non-uniformly graded carbonate soils under impact loads. Based on the test results of uniformly graded samples as well as fractal theory，an evolution function was established to describe the PSD evolution in breakage state for uniformly graded carbonate soils. The function contains only two parameters including fractal dimension D and breakage probability pB，which are both the functions of the input energy Eb. The non-uniformly graded sample was assumed to be a collection of independent multiple uniformly graded groups，and，from the PSD evolution functions of these groups，an assembly matrix was proposed to describe the PSD evolution for non-uniformly graded samples in breakage state. The test results of two sets of non-uniformly graded samples show that the proposed method can well predict the PSD in breakage state for non-uniformly graded samples under different Eb.

Key words： soil mechanics carbonate soil particle breakage particle size distribution evolution fractal theory

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	Articles by authors
	LIN Lan1
	2
	LI Sa1
	2
	SUN Liqiang1
	2
	LI Tingting1
	2
	YIN Jiangsong1
	2

Cite this article:

LIN Lan1,2,LI Sa1, et al. Study on evolution of particle breakage of carbonate soils based on fractal theory[J]. , 2021, 40(3): 640-648.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0591 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I3/640

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