摘要
结合深部软岩巷道特殊的地质状况和围岩环境,分别采用"锚网+钢带+锚索+喷射混凝土"和"恒阻大变形锚杆+钢带+底角注浆锚管"的耦合支护方案,并利用有限差分软件FLAC3D,对深部软岩巷道在开挖后出现的破坏情况进行了动态数值模拟,并对比分析了巷道在不同支护条件下的应力应变分布规律以及支护体的受力状况,为深部软岩巷道支护方案的选用提供了科学依据。
Combined with the special geological conditions and wall rock environment of the deep soft rock roadway, the coupling support scheme with ＂anchor net ＋ steel strip ＋ anchor cable ＋ shotcrete＂ and ＂large deformation anchor with constant-resistance ＋ steel strip ＋ base angle grouting anchor tube＂ are implemented respectively With the use of the finite difference software FLAC3D , the dynamic numerical simulation on the destruction of deep soft rock roadway after excavation is made to analyze the distribution of the stress and strain and the force status of the support, thus providing the scientific basis for the implementation of supporting scheme in deep soft rock roadway.
出处
《金属矿山》
CAS
北大核心
2013年第5期1-4,9,共5页
Metal Mine
关键词
深部软岩
巷道
耦合支护
数值模拟
Deep soft rock, Roadway, Coupling support, Numerical simulation
