矿业工程研究
礦業工程研究
광업공정연구
MINERAL ENGINEEERING RESEACH
2014年
4期
1-6
,共6页
曾赤%李树清%谭玉林%李兴%谭妍
曾赤%李樹清%譚玉林%李興%譚妍
증적%리수청%담옥림%리흥%담연
围岩承载结构%支护力%广义 Hoek-Brown 准则%塑性区范围
圍巖承載結構%支護力%廣義 Hoek-Brown 準則%塑性區範圍
위암승재결구%지호력%엄의 Hoek-Brown 준칙%소성구범위
bearing structure of surrounding rock%supporting pressure%generalized Hoek -Brown failure criterion%range of plastic zone
为了分析巷道围岩承载结构与支护的相互作用，建立了圆形巷道围岩内、外承载结构弹塑性分析力学模型，应用广义 Hoek －Brown 破坏准则和弹塑性基本理论，得到了塑性区半径和围岩承载结构相关参数的表达式。通过实例分析了巷道围岩承载结构与围岩稳定的关系，以及支护力对巷道围岩承载结构相关参数的影响。结果表明：外承载结构位置、宽度以及塑性承载结构宽度与巷道围岩变形量及塑性区范围密切相关；随支护力增大，巷道围岩承载结构越靠近巷道周边。
為瞭分析巷道圍巖承載結構與支護的相互作用，建立瞭圓形巷道圍巖內、外承載結構彈塑性分析力學模型，應用廣義 Hoek －Brown 破壞準則和彈塑性基本理論，得到瞭塑性區半徑和圍巖承載結構相關參數的錶達式。通過實例分析瞭巷道圍巖承載結構與圍巖穩定的關繫，以及支護力對巷道圍巖承載結構相關參數的影響。結果錶明：外承載結構位置、寬度以及塑性承載結構寬度與巷道圍巖變形量及塑性區範圍密切相關；隨支護力增大，巷道圍巖承載結構越靠近巷道週邊。
위료분석항도위암승재결구여지호적상호작용，건립료원형항도위암내、외승재결구탄소성분석역학모형，응용엄의 Hoek －Brown 파배준칙화탄소성기본이론，득도료소성구반경화위암승재결구상관삼수적표체식。통과실례분석료항도위암승재결구여위암은정적관계，이급지호력대항도위암승재결구상관삼수적영향。결과표명：외승재결구위치、관도이급소성승재결구관도여항도위암변형량급소성구범위밀절상관；수지호력증대，항도위암승재결구월고근항도주변。
VIn order to analyze the interaction relations of bearing structure and supporting of roadway surrounding rock,the elastic -plastic mechanics analysis model of inner -outer bearing structure of circular roadway surrounding rock is established,by means of applying the generalized Hoek -Brown failure criterion and the basic theory of elastic -plastic.The expressions of the radius of plastic zone and the related parameters of surrounding rock bearing structure are obtained.Relationship between the bearing structure and the stability of surrounding rock of roadway surrounding rock,and the influence of supporting pressure on the bearing structural parameters of surrounding rock of roadway are analyzed by one instance.Results show that the position and width of outer bearing structure and the width of the plastic bearing structure,have greater influence on the deformation of surrounding rock of roadway and the range of plastic zone.With the increase of supporting pressure,the bearing structure of roadway surrounding rock approaches the perimeter.
