河南省地质环境现状及特征

河南省自然地质条件复杂 ,生态环境脆弱 ,不仅分布有特殊不良地质环境条件和严重的地质灾害 ,而且存在由人类活动引起的诸多环境地质问题。特殊不良地质环境条件主要有特殊不良岩土体 (湿陷性黄土与胀缩土 )、原生地球化学异常 (高氟水、低碘水、咸水 )和次生地球化学异常(土壤盐渍化 ) ;地质灾害有崩塌、滑坡、泥石流、水土流失、地面塌陷、矿坑突水、瓦斯爆炸等 ;环境地质问题有水资源枯竭、水质污染、固体废弃物堆放等。这些已成为制约我省人民生活水平提高和社会经济发展的重要因素

THE STATUS AND MAIN CHARACTERISTICS OF GEOLOGIC ENVIRONMENT IN HENAN

In Henan Province,the natural geologic conditions are complex with weak ecologic environment where there exists not only some unfavourable special geologic environmental conditions and serious geologic hazards,but also not less environmental geological problems caused by human activities. The main unfavourable geologic conditions are certain special unfavourable rock soil mass (collapsing loess and swelling soil),primary geochemical anomaly (water of high fluorine content,water of low iodine content,saline water) and secondary geochemical anomaly (soil sali nization). The main geologic hazards include devolution,land sliding,debris flow,soil erosion,surface subsidence,water gushing in mines,gas esplosion,etc. The main environmental geological problems are as follows:exhaustion of water resources,water pollution,heaping of solid wastes and so on. All the above factors,combining together,have become the obstacle not to be ignored which restricts improving the living standards of the people and development of social economy in Henan Province.