中文摘要：

为了解决新安煤矿＋535 m回风石门软岩巷道出现的严重底臌、折帮和顶沉等非线性大变形破坏现象,采用现场工程地质力学分析、室内物理力学性质研究与三维数值模拟等研究手段,对新安煤矿回风石门软岩巷道变形破坏机制进行研究,确定变形力学机制并对其进行转化,提出恒阻大变形锚杆＋金属网＋底角锚管＋钢纤维混凝土耦合支护设计方案,并成功应用于该矿。实践证明：以恒阻大变形锚杆为核心的耦合支护技术能够有效转化变形力学机制,安全吸收岩体中积聚的变形能,有效地阻断底臌塑性滑移作用力,从而充分保证巷道的整体稳定性。

英文摘要：

To solve the destruction phenomena of non-linearity large deformation in the ＋535 m return air course soft rock roadway of Xinan coal mine,such as serious floor heave,side wall shrinking and roof sinking,situ engineering geomechanics analysis,indoor physical mechanic property research and three-dimensional numerical simulation were adopted. And a thorough study involving the deformation failure mechanism of the return air course soft rock roadway of Xinan coal mine was developed. The type of deformation mechanism of this soft rock roadway was confirmed and transferred successfully. The support form of constant resistance and large deformation bolt ＋ metal net ＋ floor anchor pipe ＋ steel fiber reinforced concrete was proposed and used in practice successfully in Xinan coal mine. Practice was proved that the coupling technology based on constant resistance and large deformation bolt could effectively transfer the deformation mechanism, absorb the deformation energy accumulated in surrounding rock,cut off the plastic sliding force of floor heave and ensure the total safety of the roadway.