Development Of GPS Deformation Monitoring System For Tailing Dams

The stability of the tailing dam plays an important role in the mining safety and environment protection. However, traditional surveying methods for dam deformation monitoring are difficult to meet the requirements of current safety monitoring of tailing dam for its out-of-date techniques, limitations in surroundings, high cost and poor automation. GPS is one of the most advanced tools in the deformation monitoring for the advantages of high-precision, high-speed and round-the-clock working. As be applied to tailing dam monitoring, GPS not only provide high precision positioning but also can realize the real-time automatic monitoring. This work describes the research background of ChenMenDong tailing dam in Anhui province. Tailing dam monitoring system based on GPS Multi-antenna method was developed. Key technologies were investigated in the work. The results have shown that real-time automatic monitoring of tailing dam was achieved, and cost of the system was greatly reduced. The emphasis in this work has been placed on:1. The investigation of the design scheme of tailing dam monitoring using GPS multi-antenna technology. The system is integrated of GPS Multi-antenna technology and fiber communication technology. It has achieved long-rang automatic monitoring.2. The design of fiber communication protocol and the software of data communication have been developed. Using the user-defined communication protocol and CRC32 check, the problem of error data has been solved, and the long-rang data transmission came true.3. The development of the software of positioning solutions. Using the GPS multi-antenna deformation monitoring system, the huge sum of raw GPS data was received and translated into RINEX format. Then the software can compute and analyze the displacement of monitoring points.4. The development of information management system of tailing dam deformation monitoring. The deformation results were saved in the database. The database can be browsed, edited and updated. And the deformation information of each monitoring points can be displayed directly.