汉江流域(湖北段)地质灾害易发程度分区
Zoning of Geological Disaster Susceptibility in Hanjiang River Basin (Hubei Section)

对汉江流域(湖北段)采用定性评价与定量评价相结合进行划分地质灾害易发程度分区，其定量评价是采用基于GIS技术的信息量法。在充分考虑资料的可获得性、研究区尺度大小、研究范围的大小以及研究精度的要求等因素的前提下，最终选取表征地质灾害发生现状和表征致灾作用强度的8类因子作为易发区定性评价的因子,其中袭扰指数包括地质灾害点密度、地质灾害面积密度、地质灾害体积系数因子，致灾因子指数包括地形地貌、地层岩性、地质构造、地下水、人类工程活动因子。本研究总结了地质灾害易发程度分区特征，为汉江流域(湖北段)地质灾害防治提供依据。
A combination of qualitative evaluation and quantitative evaluation is used to divide the geological hazard susceptibility zoning of Han River basin (Hubei section), and its quantitative evaluation is the information quantity method based on GIS technology. On the premise of the availability of data, the scale of the study area, the size of the study area and the requirement of research accuracy, eight types of factors characterizing the current situation of the intensity of disaster-causing effects were finally selected as the factors for the qualitative evaluation of vulnerable areas, with the attack index includes geological hazard point density, geological hazard area density, and geological hazard volume factor, and the disaster-causing factor index includes topography and geomorphology, stratigraphic lithology, geological structure, groundwater, and human engineering activity factor. This study summarizes the characteristics of geological hazard susceptibility zoning and provides a basis for geological hazard prevention and control in the Han River basin (Hubei sec-tion).