【作者】 杨伯达；

【导师】 何富连；

【作者基本信息】 中国矿业大学（北京） ， 采矿工程， 2014， 博士

【摘要】 为解决特厚煤层区段煤柱参数留设问题及采动平巷大变形冒顶事故，本文对综放区段煤柱合理参数开展了深入研究，并提出了采动平巷围岩控制技术。结合典型矿井煤柱宽度留设经验及采动平巷变形特征，运用工程类比法提出了5207综放区段煤柱宽度留设及采动平巷支护优化方向；基于煤样三轴压缩试验，建立了区段煤柱稳定性尖点突变模型，推导出煤柱失稳力学条件判据；综合弹性核理论、载荷估算法、经验估算法、数值模拟计算，确定5207综放区段煤柱合理宽度为18m；运用三角模糊算法，结合煤柱稳定性关键影响因素模糊重要度判别原则，确定5207综放区段煤柱稳定性关键影响因素：区段煤柱宽度和区段煤柱高度；基于桁架锚索联接锁紧器发展历程，提出了桁架锚索与单体锚索“交错布置”支护技术，阐述了其围岩控制原理：优势互补、点线结合、共同承载、安全经济；设计了5207采动平巷“交错布置”组合支护方案，运用钻孔应力计测量了区段煤柱支承压力分布规律，并观测了巷道表面位移变化规律。应用实践表明5207综放区段煤柱参数留设和采动平巷支护方案设计安全合理，且取得了良好的社会和经济效益。更多还原

【Abstract】 In order to solve the problem of coal pillar parameters and frequent roof-fall accidents afterlarge deformation, reasonable pillar parameters is studied in detail and the roadway controllingtechnology is put forward. Combined with the experience of pillar width design and thecharacteristics of roadway deformation in typical coal mine, the optimal direction of pillar width andsupport design of mining roadway at fully-mechanized section NO.5207are proposed byengineering analogy method. Based on triaxial compression test of coal sample, mechanicalcondition criterion of pillar stability is derived by establishing cusp catastrophe model. Incombination with elastic kernel theory, load estimation method, experience estimation method andnumerical simulation method, the reasonable width of coal pillar at fully-mechanized section NO.5207is18m. Combined with triangular fuzzy algorithm and the principle of fuzzy importance, keyinfluence factors to pillar stability are as follows: section pillar width, section pillar height. Based onthe development history of truss connector,“staggered arrangement method”(SAM) supporttechnology containing truss cable and single cable is proposed and its surrounding control principlesare as follows: advantageous complementarities, point-line combination, common carrying andsafety economy. The SAM combined supporting scheme is designed at fully-mechanized section NO.5207, then, the distribution regularities of pillar abutment pressure is measured by borehole stressgauge and the roadway displacement is observed. The research achieves have been applied to5207workface and have brought social and finical benefits promptly.更多还原