矿业工程
礦業工程
광업공정
MINING ENGINEERING
2014年
2期
3-5
,共3页
Hoek-Brown准则%围岩%力学特征%弹塑性分析
Hoek-Brown準則%圍巖%力學特徵%彈塑性分析
Hoek-Brown준칙%위암%역학특정%탄소성분석
Hoek-Brown Criterion%wall rock%mechanical characteristics%elastoplasticity analysis
基于 Hoek-Brown准则对巷道围岩进行了弹塑性分析，开展了算例分析和数值模拟研究。结果表明：围岩应力场、位移场、塑性变形区均呈对称性分布；垂直位移量约是水平位移量的5倍，随着表面围岩向深部延伸，位移量逐渐减小直至为0。围岩开挖后形成了一个环形的塑性变形区。
基于 Hoek-Brown準則對巷道圍巖進行瞭彈塑性分析，開展瞭算例分析和數值模擬研究。結果錶明：圍巖應力場、位移場、塑性變形區均呈對稱性分佈；垂直位移量約是水平位移量的5倍，隨著錶麵圍巖嚮深部延伸，位移量逐漸減小直至為0。圍巖開挖後形成瞭一箇環形的塑性變形區。
기우 Hoek-Brown준칙대항도위암진행료탄소성분석，개전료산례분석화수치모의연구。결과표명：위암응력장、위이장、소성변형구균정대칭성분포；수직위이량약시수평위이량적5배，수착표면위암향심부연신，위이량축점감소직지위0。위암개알후형성료일개배형적소성변형구。
Based on Hoek-Brown Criterion,it conducts theelastoplasticity analysis on the wall rock of roadway,and carries out the analysis of examples and numerical simulation study.The results show that wall rock field of stress, and plastically deforming area are all in the distribution of symmetry;the vertical displacement is five times of the horizontal displacement;and with the surface wall rock extends to the deep,the displacement will generally decrease to zero.When the wall rock is excavated,a circular plastically deforming area is formed.
