Development And Application Of Distributed Fiber Optical Monitoring Information System For Ground Fissures

Ground fissure is a kind of geological disaster,which often brings loss to people's life and property.Based on the Development Projects of National Major Scientific Research Instrument of China(41427801)and the Research Projects of Ministry of Land and Resources for the public welfare industry in China(201511055-2),this paper focus on the development of distributed fiber optical monitoring information system for ground fissure,including the design of fiber optical monitoring network,monitoring data processing,monitoring data analysis,the software development of data processing,the fiber optical monitoring network construction and analysis;the key technical problems such as the distributed optical fiber data processing and the construction and analysis of fiber optical monitoring network were solved,an information processing and analysis platform of distributed fiber optical monitoring for ground fissure was provided.The main work and achievements are as follows:(1)The current monitoring methods for ground fissure and deficiencies of these methods was summarized;the principle of distributed fiber optical monitoring technology was briefly described;the problems existing in the application of distributed fiber optical monitoring technology in ground fissure monitoring were introduced.(2)The basic characteristics of ground fissures were analyzed.According to the distribution characteristics of ground fissures in the plane and profile,the key research points to development of distributed fiber optical monitoring information system for ground fissure were summarized;the structure,development environment,development platform and development process of the system were described in detail.(3)The function structure and modules of distributed fiber optical monitoring data processing subsystem and the monitoring network construction and analysis subsystem were designed and implemented;The design framework of each function module and the realization principle and method of these modules were described in detail;a distributed optical fiber data processing method-feature points compression algorithm was proposed.(4)Illustrated by the case of fiber optical monitoring of the ground fissure in the Si Fang Xiang,He Xiang Village,Jiangyin City,Wuxi,the information monitoring system of login interface and the functions of every module was verified;the advantages and disadvantages of several image interpolation methods are compared and analyzed;the applicability of the system is verified by the measured data.