潘一东矿深井软岩巷道变形特性与支护对策  

Soft Roadway Deformation Characteristics and Supporting Countermeasures of Deep Shaft in Panyidong Mine

作　　者：徐朝政[1] 崔先泽 黄诗冰 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071

出　　处：《煤矿安全》2013年第12期54-57,共4页Safety in Coal Mines

基　　金：中国科学院重要方向资助项目(kzcx2-yw-152);国家自然科学基金资助项目(41202224)

摘　　要：针对深部复杂地质条件下高地应力软岩巷道稳定性控制难题,研究淮南潘一东矿-848m西翼胶带机大巷围岩变形特性,并进行FLAC3D数值计算分析。研究结果表明,深部巷道支护受高地应力、围岩力学性质、支护强度等因素影响;围岩破坏模式主要为剪切破坏和拉剪破坏;底板支护,有利于巷道稳定性控制。基于联合支护理论,提出加强固结修复、应力转移和扩大承载圈分步联合支护方案,取得良好的支护效果。For solving the control problem of soft rock roadway stability in deep complex geological conditions with high ground stress,the deformation characteristics of the surrounding rock in a buried depth of 848 m tape machine roadway in the west wing of Panyidong Mine in Huainan were studied with FLAC3D. The studied results indicated that the support of the deep soft rock roadway is clearly related to the high ground stress,the mechanical properties of surrounding rock and the supporting strength. The failure pattern of rock mainly includes shear failure and tension-shear failure. Besides it’s verified that floor supporting is conducive to the roadway stability control. Based on the combined support theory,the combined support scheme with a concept of strengthening the consolidation repair,transferring the stress and expanding load ring for the soft rock roadway was proposed which achieves a good supporting effect.

关 键 词：深井 高地应力 软岩巷道 联合支护 注浆锚索 

分 类 号：TD353[矿业工程—矿井建设]