关中盆地东部地区工程地质分区与适宜性评价——以陕西省安仁镇幅为例

Engineering Geological Zoning and Suitability Evaluation in the Eastern Area of Guanzhong Basin:Take Anren Township in Shaanxi Province as an Example

关中盆地东部地区活动断裂、地裂缝、黄土湿陷等工程地质问题突出。以陕西省安仁镇幅为例,通过水工环综合地质调查,在查明研究区工程地质条件和主要工程地质问题的基础上,进行了工程地质分区,将研究区划分为3个工程地质区、7个工程地质亚区和11个工程地质地段。研究选择地形地貌、水文、工程地质、不良地质作用和地质灾害、断裂和地震效应5个一级评价因子和11个二级评价因子,采用多因子分级加权指数和法,对研究区进行了工程建设适宜性评价,研究成果可为当地城镇规划、工程选址和防灾减灾提供地质依据和参考。

Engineering geological problems are prominent in the eastern part of the Guanzhong Basin,such as active faults,ground fissures and loess subsidence.This study takes the Anren township in Shaanxi province as an example.Through comprehensive geological survey of the hydrological engineering environment,the engineering geological conditions and major engineering geological problems in the study area were identified.Then the engineering geological zoning is carried out and the study area is divided into 3 engineering geological areas,7 engineering geological sub-areas and 11 engineering geological sections.5 primary evaluation factors,including,topography,hydrology,engineering geology,adverse geological effects and geological hazards,faults and seismic effects,were selected for engineering geological zoning,specifically involving 11 secondary evaluation factors.By using the multi-factor weighted index sum method,the suitability of engineering construction in the study area is evaluated.The research results of this paper could provide geological basis and reference for local town planning,project location and disaster prevention and reduction.