构造应力场对深井巷道围岩稳定的影响  

Effect of Structural Stress Field on Stability of Rock Surrounding Deep Underground Roadway

作　　者：赵继银[1] 张传信[1] 

机构地区：[1]中钢集团马鞍山矿山研究院

出　　处：《金属矿山》2005年第5期21-23,59,共4页Metal Mine

摘　　要：为了研究构造应力场对深井巷道围岩稳定的影响,运用3D-σ有限元计算软件对深井巷道在构造应力场中不同布置方向的稳定性进行了数值模拟分析,分析得出随着巷道轴向与构造应力场方向夹角的增大,巷道围岩受力状况逐渐趋于恶化。对此,提出在布置巷道时,尽可能使巷道轴线方向与最大水平主应力方向以小角度相交(最好趋于一致),并采用宽度大于高度的矩形、拱形或椭圆形断面,使断面形状与构造应力状态相适应。To study the effect of structural stress field on the stability of rock surrounding deep underground roadways, 3D-σ finite element calculation software was used in the numerical simulation analysis of the stability of deep underground roadway in different allocation directions in the structural stress field. It is concluded that, with the increase of the included angle between the axial direction of roadway and the direction of structural stress field, the strain condition of the rock surrounding roadways tends to deteriorate. Therefore, it is proposed that, in roadway configuration, the axial direction of the roadway should be crossed (better to be identical) with the maxium main horizontal stress direction at an angle as small as possible, and rectangle, arch or ellipse shape whose width is larger than the height be used so as to adapt the sectional shape to the state of structural stress.

关 键 词：构造应力场 深井巷道 围岩稳定 有限元计算软件 数值模拟分析 主应力方向 布置方向 受力状况 巷道围岩 圆形断面 应力状态 断面形状 稳定性 小角度 拱形 

分 类 号：TD353[矿业工程—矿井建设] P554[天文地球—构造地质学]