长江三峡工程库区巴东新城址环境工程地质预测

巴东县城新址是长江三峡工程库区移民城镇环境工程地质问题较突出的场址之一, 主要环境工程地质问题是古滑坡的失稳和库岸再造。在查清地质环境条件的基础上, 本文着重进行了黄土坡古滑坡、赵树岭古滑坡等古滑坡的稳定性预测, 并根据实测的有关参数, 采用图解法预测库岸再造宽度。在此基础上, 根据影响该区城市开发建设的主要的地质环境要素, 建立隶属函数, 采用模糊综合评判模型及算法, 给出巴东县城新址区的城市开发建设的环境地质分区评价。

ENVIRONMENTAL ENGINEERING GEOLOGICAL PREDICTION OF THE NEW URBAN SITE AREA OF BADONG CITY

There exist many geological hazards and geo-environmental problems in the new urban site area of Badong in the reservoir area of Three gorge project.On the basis of investigation of geological background,in which ancient landslide is the most sensitive to slope failure.The stability of Huangtupo ancient landslide,Zhaoshuling ancient landslide etc.was studied in detail in consideration of the combining effect of reservoir impounding,rainfall, and man-induced infiltration.The river bank erosion was estimated on a schematic model and from the parameters obtained in the in-situ investigation. According to the main geo-environmental factors affecting urban development and their subordinating functions in land use,a microzonation of land use of the planned urban area of Badong was done by using fuzzy-comprehensive discrimination.