ROCKBURST ANALYSIS BASED ON DAMAGE CRACK MODEL OF HYPOPLASTICITY

被引：0

作者：

Xiong, Bao-Lin ^{[1
]}

Wang, Xi-Liang ^{[1
]}

Lu, Chun-Jiao ^{[2
]}

机构：

[1] Shijiazhuang Railway Inst, Dept Civil Engn, Shijiazhuang 050043, Peoples R China

[2] Shijiazhuang Railway Inst, Dept Architecture & Art Design, Shijiazhuang 050043, Peoples R China

来源：

CONTROLLING SEISMIC HAZARD AND SUSTAINABLE DEVELOPMENT OF DEEP MINES: 7TH INTERNATIONAL SYMPOSIUM ON ROCKBURST AND SEISMICITY IN MINES (RASIM7), VOL 1 AND 2 | 2009年

关键词：

D O I：

暂无

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Hypoplastic constitutive model is developed on the basis of nonlinear tensorial functions and without resorting to concepts of elasto-plasticity theory such as yield surface, plastic potential, flow and hardening rules, and decomposition of deformation into elastic and plastic parts. In this paper, based on the hypoplastic model, damage energy release rate is firstly deduced. By virtue of fracture criterion, damage evolution equation is then determined to analyze the propagating of crack in surrounding rock. Throughout this study, it is made clear that the unstable propagation of cracks is caused by the interaction between cracks and that free surface and then thin layers of rock mass are formed as a result of coalescence of cracks. Finally, formation mechanism of rockburst is concluded and the regularity of rockburst is explained quantitatively.

引用

页码：785 / 788

页数：4

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