滇池不仅是云贵高原最大的浅水湖泊,对于维系昆明及周边地区生态环境意义重大,同时也是储有超过15亿m³高度富营养化的劣五类水质的巨型水体。滇池湖泊污染与富营养化治理将是一项长期艰巨的工作,其高度富营养化的劣质水体灾害性扩散将产生重大的生态环境影响。历史记录、水下地形、区域地质构造和地层沉积年代学研究均证明滇池至少于1764年曾发生过非气候因素的构造漏水事件,可能与滇池中部2个漏斗或其中之一相关。从漏斗底部地形形态和沉积物变形特征分析,其中一个处于於堵至崩塌阶段,另一个却处在休眠至缓慢发育阶段,一旦由于水位上升水体压力增大、或地震诱发地下断裂通道(包括喀斯特溶洞)贯通,则可发生灾害性构造漏水事件,滇池高度富营养化污水就必然扩散或有可能通过地下通道注入抚仙湖,引起联动生态环境效应,直接造成占国家9%以上战略淡水资源的深度长期污染、威胁国家水安全。开展滇池漏斗水流变化检测预警、通过地球物理探测确定地下破碎带或通道、采取工程措施堵塞漏水通道刻不容缓。

Dianchi or Lake Dian is the largest shallow water lake on the Yunnan-Guizhou Plateau, which is not only crucial to maintain the ecological environments of Kunming, the famous city with four springs, but also contains almost 1.5×10⁹ m³ highly polluted water. The management of the lake pollution and eutrophication will be a long-lasting hard work and the sudden diffusion of such highly polluted water can lead to catastrophic eco-environmental problems. Based on the historical documents, underwater topographic features, regional geological tectonics and the chronology of the sediments, it can be concluded that at one time the water leaked out in Dianchi, which is in consistent with the historical record of 1764 AD. This water leak event resulted in two funnels in the center of Dianchi. The sedimentary feature and the deformation properties indicated that the slope of one funnel collapsed, which means it was blocked, but the other one was under development or in dormancy. When the pressure induced from the water level changed or the earthquakes occurred, the underwater channel could be open or connected, a catastrophic water leakage might be induced. The highly polluted lake water would possibly flow to Lake Fuxian and pollute almost 9% national strategic fresh water resource, resulting in an eco-environmental event and endangering the national water security. Therefore, to monitor the water flowing situation, detect the position and direction of the channel, block the channel and prevent possible lake water leakage are the priority and urgent measurements at present.