Abstract: In western China there are full of mountains，the traffic is too bad.Air-transportation has become necessary.The geo-engineering reconnaissance and the stability evaluate within the airport will directly effect the airport’s design and it’s will-being.The western airport’s geo-condition is generally complex，such as the new Kunming Xiaoshao International Aerodrome，Whose karst is extraordinary flourish，there are dissolve holes every where in the region.After studying the collected data and the AHP method，it designs the monofactorial overlay analyst and dynamic-weighted calculation to evaluate the region’s security.Using GIS technology to design the arithmetic and display the spatial security，the result is rather good.

Key words: karst subside, dynamic-weighted calculation, comprehensive assessment forewarning model

摘要： 我国西部地区山高路险、交通不便，在国民经济高速发展的今天，航空运输就成了最迫切需要的交通工具。在机场建设工程中，场区的工程地质勘察及稳定性评价直接影响机场的设计及机场将来的可持续运转，如地质条件复杂的昆明小哨机场场区岩溶发育，溶洞、漏斗星罗棋布，成为造成机场安全隐患的重大因素，必须做出科学的评估和预警。根据该机场工程地质勘察资料以及野外现场调查，在充分研究地质灾害评价常用的AHP法基础上，针对本地区特殊的岩溶地质条件，探索性地设计了一种单因素叠置分析和动态加权综合评价相结合的岩溶塌陷预警综合评价方法，并建立了相应的数学模型。采用GIS技术设计算法和实现评估区空间预警，为科学的评估岩溶塌陷提供了一种新的思路。

关键词: 岩溶塌陷, 动态加权, 综合评价模型