中文摘要：

针对构造应力场中巷道围岩变形破坏基本特征，采用FLAC-3D数值计算软件，依次分析侧压系数、内摩擦角、黏聚力对矩形巷道周边应力分布、位移和塑性区扩展的影响。结果表明：侧压系数对巷道围岩变形破坏具有敏感性，随着侧压系数的增大，巷道两帮移近量呈现正比增加的趋势且明显大于顶底移近量；内摩擦角在一定的取值范围内，与巷道围岩塑性区变化存在着负相关性，但是当其增大到相对的临界点（30°≤φ≤35°）时，塑性区的变化将不再明显；当黏聚力增大到一定程度（C=5．OMPa）时，巷道围岩塑性区的变化将保持在一个相对稳定的水平。在此基础上提出高强让压支护的基本思路，干发了“多孔循环注浆，深浅孔结合”工艺，在工程实践中取得较好效果。

英文摘要：

In order to obtain surrounding rock＇s deformation and failure characteristic of roadway in tectonic stress field, FLAC3D was applied to analyzing the influence of side pressure coefficient, internal friction angel and cohesion on stress distribution, displacement and plastic zone development of rectangle roadway. Results showed that with side pressure coefficient increasing, the direct ratio in- creasing tendency of two-side divergence was obviously larger than that of roof-to-floor. Within some value range, internal friction angle was negatively related with plastic zone area, but when it increased to relative limit （30°≤ φ ≤35°） , plastic zone would keep sta- ble. On the basis of this, basic thinking of high-strength yieldable support was put forward and technique of ＂circulation grunting with deep and shallow drill-holes＂ was developed. Engineering practice showed good effect.