隧道突水灾害光纤光栅多元信息表征、状态辨识与预警理论研究

项目名称： 隧道突水灾害光纤光栅多元信息表征、状态辨识与预警理论研究

项目编号： No.41202206

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 王静

作者单位： 山东大学

项目金额： 23万元

中文摘要： 突水灾害是交通、水电等领域隧道(洞)建设面临的主要挑战，突水灾害的实时监测、状态辨识和预警已成为亟待解决的关键科技难题。针对上述问题，本项目将光纤光栅传感方法作为突水灾害监测的实现方法，提出"以多元表征信息特性实现突水灾变过程综合辨识与灾害预警"的学术思路。首先，突破光纤光栅应变传递机理与荷载分布时变重构理论，建立隧道突水灾害表征信息高精度传感与获取新方法。同时，建立流速流向、应力等典型突水灾害表征信息的光纤光栅传感模型，重点研究流速流向矢量传感与植入式三维应力传感的实现方法及传感器，构建多元表征信息一体化智能传感网络。作为核心研究内容，开展隧道突水数值模拟与物理模型试验，深入研究突水灾变过程中多元表征信息响应规律与前兆特征，建立隧道突水灾害综合状态辨识与预警理论模型。最后，结合现场试验，形成隧道突水灾害光纤光栅传感实时监测、状态辨识与预警系统，研究成果对隧道突水灾害防治具有重要意义。

中文关键词： 隧道突水灾害；光纤光栅传感；实时监测；地质力学模型试验；

英文摘要： Water inrush disaster has became the main challenges to many fields such as traffic and hydroelectric engineering in the tunnel construction period. Real-time monitoring, state identification and early-warning of the water inrush hazards have become a key scientific problem to be urgently solved . In response to the above problems, fiber Bragg grating sensing method is regarded as the realization means of water inrush monitoring. At the same time, the academic thought that identification of the water inrush catastrophic process and early-warning of the disaster are realized by multiple characteristic information is proposed. Firstly, strain transfer mechanism of fiber Bragg grating and time-varying reconfiguration theory on load distribution are made breakthroughs. And then new method on high-precision sensing and acquisition of tunnel water disasters characterization information is established. Meanwhile, the fiber grating sensing model based on the typical water inrush disaster characterized information, such as flow velocity and strain, is going to be built. Key research will focus on the implementation method of flow velocity and direction vector sensor and 3-dimensional stress sensor. The multiple characteristic information integration intelligent sensing network is to be construct. As the key research cont

英文关键词： tunnel water inrush disaster；fiber grating sensing；real-time monitoring；geomechanical model test；