基于BOTDR技术的岩溶塌陷监测预警试验研究

项目名称： 基于BOTDR技术的岩溶塌陷监测预警试验研究

项目编号： No.41302288

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 管振德

作者单位： 中国地质科学院岩溶地质研究所

项目金额： 26万元

中文摘要： 在我国西南岩溶地区，随着国民经济发展与自然资源开发利用日益增强，岩溶塌陷问题也日趋频繁严峻，已经成为阻碍岩溶地区可持续发展的重要问题，有效减轻其造成的危害势在必行，防灾减灾之关键在于建立完善的监测预警体系，也是未来地质灾害研究的必然趋势。随着先进的光纤传感技术的出现与发展，为完善岩溶塌陷监测预警体系的建立提供了一种可能。本项目基于岩溶塌陷灾变过程与机理，分析岩溶塌陷灾变在多场耦合条件下应力与应变场的变化规律与特征信息，确定岩溶塌陷灾变关键指标。运用BOTDR光纤监测技术进行大型物理模型试验，开展灾变过程多元信息识别分析，建立岩溶塌陷监测预警模型，解决监测预警关键问题，为岩溶塌陷监测预警自动化、网络化、智能化体系的进一步完善奠定基础。

中文关键词： 岩溶塌陷；成因机理；光纤传感；物理模型试验；

英文摘要： With the development of economy and the ever-increasing exploitation of natural resources in the karst areas of Southwest China, karst collapse has become more and more serious and even a major obstacle for the regional sustainable development. Therefore, it is very important to reduce this geo-hazard effectively. The establishment of a comprehensive monitoring and early warning system is not only the key to the disaster prevention and mitigation, but also the inevitable trend of the further research on geological disasters. The emergence and development of the advanced optical fiber sensing technology provides a possibility to improve the establishment of the monitoring and early warning system of karst collapse. The key indexes of karst collapse catastrophe can be confirmed by analyzing the variation and characteristic of karst collapse catastrophe under multiple coupled conditions on the basis of collapse catastrophe process and mechanism. The BOTDR optical fiber monitoring technique will be adopted during large-scale physical model test in order to analyze and identify multi-information through catastrophe process. And then, the karst collapse monitoring early warning model can be built up, and this will be a good foundation for further research and perfection of automate, networked and intelligent monitorin

英文关键词： the Karst collapse；the formation mechanism；the fibre-optic sensing；physical modelling experiment；