兴安矿深部软岩巷道大变形控制对策

Large Deformation Control Countermeasures of Deep Soft Rock Roadway in Xing'an Mine

为了更好地控制深部软岩巷道围岩大变形破坏问题,通过现场调查和理论分析,得出了兴安矿深部软岩巷道围岩大变形破坏的主要影响因素包括工程地质条件差、地应力水平高、水解作用和原支护不合理。基于这些影响因素,建立了包括围岩结构优化技术、耦合支护技术、底板控制技术、冒落控制技术为核心的深部工程稳定性一体化耦合控制技术。工程实践表明,在深部复杂的软岩巷道支护中,采用一体化耦合控制技术,能有效控制深部软岩巷道大变形破坏。

In order to better control the large deformation and failure problems of the surrounding rocks of the deep soft roadway in the mine, with the site investigation and theoretical analysis, the main factors affected to the large deformation and failure of the surrounding rocks in the deep soft rock roadway in Xing＇an Mine obtained were the poor engineering geology, high stress level, hydrolytic function and irrational previous support. Based on the influence factors, a stability integration coupling control technology including the surrounding rock structure optimized technology, coupling support technology, floor control technology, roof falling control technology as the key of the deep mine project. The project practices showed that the integration coupling control technology could be effectively to control the large deformation and failure of the deep soft rock roadway in the deep and complicated soft rock roadway support.