基于现场监测的破碎围岩介质垮落失稳及综合分析

进行了现场工程地质、开采技术特征以及动力失稳等调查；研究了顶板深部离层、断面收敛变形.采用现场锚杆(索)锚固强度以及声发射等围岩损伤与变形的多元信息监测手段.基于Hoek-Brown强度准则，辅以FLAC^3D计算，分析其力学特征与失稳机理，根据现场综合监测和测试结果对比及分析，确定了巷道合理支护形式与定量参数，最终确保了巷道安全与稳定.

Comprehensive assessment of collapse instability of fractured rockmass mediums based on in-situ monitoring

The field engineering geological environment,characteristics of lithologic correlation,mining characters or parameters and dynamical instability of roadway were generally investigated.Furthermore,the field multiple-in- dex monitoring methodologies including roof deep-delamination observation,monitoring of convergence deformation of across-section,field test for bolt-cable anchoring strength,acoustic emission(AE)characterization indicating rock-mass micro-fractures and damages were applied.The consequences of mechanical or strength characterization and collapsing mechanism were assessed based on the Hock-Brown criterion and FLAC~(3D) program and comparison of observed indicators or information after roof falls and the place of the mining activity ultimately,the effective sup- porting and reinforcing methods and rational parameters were determined quantitatively by so as to achieve rockmass stability and safe mining.