【摘要】 采用野外调查、试验及模拟计算的方法,在分析龙湖区地质背景及现状条件的基础上,对规划龙湖建设前后可能产生的环境地质问题进行综合分析。研究结果表明:龙湖在建设过程中存在潜蚀及边坡失稳的可能;蓄水运行后会引起地下水位抬升,造成湖岸区部分土体密度增大、压缩系数增大、压缩模量减小、c和φ值减小、强度降低、地震液化指数增大、局部地区存在浸没及土壤次生盐渍化等问题。为郑州龙湖工程科学规划及建设提供了一定的地质依据。更多还原

【Abstract】 Based on analysis of the geological background and present situation of Longhu Lake,environmental geological problems that may occur before and after the construction of Longhu Lake are synthetically analyzed through survey,test and simulation calculations.The research results indicate the possibility of suffosion and slope instability during the construction of Longhu Lake.After impounding and operation,the groundwater level will rise,resulting in some problems,including an increase of density,an increase of compressibility,a decrease of the compression modulus,a decrease in the value of c and φ,a decrease of strength,an increase in the earthquake liquefaction index,local submersion,and soil secondary salinization.This study provides a geological basis for the scientific planning and construction of the Longhu Lake project.更多还原