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Abstract The frequent land subsidence of coal mining subsidence area seriously affects the surrounding ecological environment and social and economic development. Based on the application of unmanned measuring ship technology in underwater subsidence monitoring in coal mining subsidence area, this paper could effectively obtain and analyze data in subsidence area under high risk and complex environment, so as to strengthen the analysis and monitoring of accumulated water depth, underwater topographic model, water depth contour and water bottom subsidence in coal mining subsidence area, and fully connect the related work of land and space planning, ecological restoration and management, cultivated land protection and so on.
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