工程岩体稳定性主要受节理发育特征控制,岩体节理信息提取与分析对于工程设计、地质工程评价和施工安全具有重要意义.针对当前岩体节理信息提取存在工作量大、劳动强度高、作业风险性强且效率低的问题,提出了一种基于多旋翼飞控平台区域岩体节理信息提取方法.分析了系统的软硬件组成,阐述了无人机航拍调查、区域岩体环境三维虚拟重构、节理裂隙信息提取等数据处理流程,并分析总结了多旋翼无人机开展节理岩体数据采集、基于航拍视频的节理岩体模型虚拟重构、岩体节理信息提取与分析3项关键技术,同时验证了系统的精度.依托黑沟矿区露天边坡节理裂隙调查工作进行了技术验证,现场试验表明:所提出的节理裂隙信息提取方法操作简便、准确度高,为快速提取岩体节理信息提供了参考.

Based on the measurement data with the in situ hydraulic fracturing method,it introduces that the analysis of the curve about pressure-time and the characteristics of regional stress state of the target region.And it analyzes that the initial rock stress has potent influence on failure and deformation around openings of tunnel.On the basis of data it could optimize the design of the liner,selection of tunnel section and direction of tunnel axes.

Based on the principle of resemblance theory,combined with the practical problem of Dayaogou tunnel 2,some model tests are conducted to analyze the effects of the tunnel in fault,and the numerical simulation is conducted as the assistant method.Some distribution rules of surrounding rock stress of the tunnel are summarized to provide the reasonable references to design and construction of this tunnel.