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如何准确地获取城市扩展的信息,并分析地质灾害对城市扩展的影响,对于指导城市规划具有重要的指导意义。首先利用四个时相的MSS、TM、CBERS-2遥感图像,提取唐山市28年来建成区的面积,并且对四个时期城市建成区的扩展进行了全面分析。然后从地质灾害的角度,分析了地震、岩溶塌陷、采煤塌陷这三个地质灾害对唐山市城市扩展的影响。最后针对唐山市未来的城市扩展提出了建议。
How to accurately obtain the information of urban expansion and analyze the impact of geological disasters on urban expansion have important guiding significance for guiding urban planning. Firstly, using the four phases of MSS, TM and CBERS-2 remote sensing images, the area of built-up areas in Tangshan for 28 years was extracted, and the expansion of urban built-up areas in the four periods was comprehensively analyzed. Then from the perspective of geological disasters, the paper analyzes the impact of the three geological disasters, such as earthquake, karst collapse and coal mining collapse, on the urban expansion in Tangshan. Finally, it puts forward suggestions for the future expansion of Tangshan city.