地下河系浸没内涝对环境影响定量研究

Characteristics Research on Environmental Influence from the Immersed and Waterlogged Subterranean River System

岩溶浸没内涝是我国南方岩溶区典型而又重要的自然灾害之一,长期以来给当地的人民群众生产、生活构成威胁。近年来由于水库的兴建,使灾害程度加重。本文以红水河梯级水电站之一的岩滩库区板文地下河浸没内涝为例,研究库区日降雨量对库区洼地的水位反映,讨论其谷地的浸没内涝特征,详细分析水位过程、最高水位、敏感降雨量、始涝降雨量、延时天数等灾害指标,给灾害分析提供参考依据。

The karst immersion and waterlogging is one of the typical and the most important nature disasters in southern karst areas of China. They are threating to the local production and life for a long time. In recent years, due to the construction of more reservoirs, the disaster became serious. Taking the immersion and waterlogging of Banwen＇s subterranean rivers in Yantan reservoir area as an example, the influence of the daily rainfall to the water level of reservoir depression is studied and the features of the immersion and waterlogging of the valley are discussed. The disaster indices such as water level processing, the highest water level, sensitive rainfall, original waterlogged rainfall and delayed days are analyzed in detail which provides the reference basis for the disaster analysis.