Abstract:
Mineral resources provide important material guarantee for our country’s economic construction, but the mining development and utilization have seriously damaged the ecological environment around the mining area. The ecological restoration of mining areas mainly solves the ecological and environmental problems caused by mining activities. The restoration project of mountains, rivers, forests, farmlands, lakes and grasslands ecosystem refers to the process and activities of overall protection, systematic restoration and comprehensive management of damaged, degraded and declining ecosystems in accordance with the concept that mountains, rivers, forests, farmlands, lakes and grasslands are a community of life, following the laws of succession and internal mechanisms of natural ecosystems, and the ecological restoration measurement of mountains, rivers, forests, farmlands, lakes and grasslands has become a key link in the field of ecological engineering. Accurate survey provides a scientific basis and data support for the entire ecological restoration, thereby ensuring the effectiveness and sustainability of the restoration work. This paper compares and analyzes the application of static GNSS and HNCORS in the ecological restoration survey in mining areas. Static GNSS survey technology is widely used in ecological engineering survey with its high precision and all-weather performance, providing a reliable means for accurately obtaining geographic information; while HNCORS survey technology improves survey efficiency and real-time performance with its advantages of real-time performance and data update frequency, and is suitable for the needs of rapid feedback of environmental monitoring data. The comparison of engineering practice accuracy shows that HNCORS is optimized through the quasi-geoid model and is not affected by the adverse factors of static GNSS control survey. Its accuracy can meet the requirements of mine primary control survey and subsequent engineering survey applications.