巷道顶板锚固孔钻进动力响应特性模型试验

发布时间：2018-07-20 12:33

【摘要】：采用实验室相似模拟实验方法对巷道顶板锚固孔进行仿真钻进,探究巷道顶板锚固孔钻进动力响应指标(钻速及转速)与岩石物理力学性质(普氏系数)间的关系。得出如下结论:锚固孔的钻进动力响应指标基本上均随顶板岩石普氏系数f的增加而减小,实验数据回归曲线大致呈现负指数关系;据此一定程度上可实现对顶板岩层类型的辨识,进而指导并优化巷道顶板锚杆支护初始设计与预防冒顶事故的发生;动力响应指标与岩石普氏系数f相关性较好,如能通过相关仪器对响应指标进行实时监测,对深入研发顶板岩层结构探测仪器具有重要的参考价值;论文所用方法,为实验室岩石钻进试验的研究提供了一种借鉴。
[Abstract]:The relationship between the dynamic response index (drilling speed and speed) and the physical and mechanical properties of rock (prhi coefficient) of the roadway roof anchorage hole is investigated by the simulation experiment method of laboratory similar simulation experiment. The following conclusions are drawn: the drilling dynamic response index of the anchorage hole is basically f with the pric coefficient of the roof rock. The regression curve of the experimental data has a negative exponential relationship, and a certain degree can be used to identify the type of the roof rock, and then to guide and optimize the initial design of the roof bolt support and the prevention of the roof accident; the dynamic response index has a good correlation with the rock prill coefficient F, for example, through the correlator. The real-time monitoring of the response index is of great reference value for the deep research of the roof rock structure detection instrument, and the method used in this paper provides a reference for the study of the rock drilling test in the laboratory.
【作者单位】：天地科技股份有限公司开采设计事业部;煤炭科学研究总院开采研究分院;中国矿业大学(北京)资源与安全工程学院;河南大有能源股份有限公司耿村煤矿;
【基金】：国家科技支撑计划资助项目(2012BAB13B02) 国家自然科学资金煤炭联合资金重点资助项目(U1261211)
【分类号】：TD327.2;TD313

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