软硬互层状岩体局部区域的细观非均匀特性研究

doi:10.13722/j.cnki.jrme.2017.1165

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Abstract

For the alternatively distributed soft and hard rockmass of Jinping underground carves，the technology of image segmentation based on region growing algorithm is employed to characterize the meso-structure features of local areas of rock mass，and the method for obtaining growth parameter in algorithm is discussed. A meso-scale homogeneous mesh model corresponding to the rock sample is established by using the FLAC^3Dprogram according to the proportional relation mapping method. On this basis，the mesoscopic probability model and elastic-brittle-plastic constitutive relation is realized for mechanical parameters of elements. Then，a mesoscopic numerical model of local region of stratified rock mass is established. And several numerical simulation schemes are used to investigate the influence of meso-inhomogeneity on rock mechanical properties. The results show that the meso-inhomogeneity of alternatively distributed soft and hard rockmass has remarkable influence on their deformation property，strength characteristic，acoustic emission law and cumulative damage process.

Key words： rock mechanics alternatively distributed soft and hard rockmass region growing algorithm growth parameter meso-scopic probability model meso-inhomogeneity

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	Articles by authors
	LI Ang1
	SHAO Guojian2
	SUN Yang1
	SHI Hougai2
	SU Jingbo1

Cite this article:

LI Ang1,SHAO Guojian2,SUN Yang1, et al. Study on meso-inhomogeneity of local region of alternatively distributed soft and hard composite rockmass[J]. , 2017, 36(S2): 3852-3863.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1165 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/3852

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