The problems of geo-environment mainly include ground fissure, loess wet-frame , sand soil fluidity, water contamination, geochemistry abnormity(including F, G r 6+ ).

• 环境地质问题主要考虑地裂缝、黄土湿陷性、砂土液化、水质污染、地球化学异常(包括F~-、G r~(6+)的异常)等环境要素。