【摘要】 为进一步研究西安地裂缝,给地铁沿线地裂缝的防灾减灾提供科学依据,通过野外地质环境和地质灾害调查,着重查明了西安地铁三号线沿线地裂缝的活动情况和发育特征,并根据与地铁线路的具体交汇特点,将其划分成12个区段进行了详细描述;分析了近年来各区段地裂缝的年活动量及地铁工程的施工与运营对地裂缝活动的影响,并预测了其活动趋势;采用定量计算的方法确定了地裂缝对地铁的影响范围,并在综合分析地铁危害特点的基础上确定了地裂缝与线路相交段的危险性等级。分析结果表明:沿线地裂缝具有成带性和定向性的特点,并且总体有持续发展和进一步连续贯通的活动趋势;其中7个区段地裂缝对地铁的潜在威胁较为严重,应予以高度重视。更多还原

【Abstract】 In order to research the Xi’an ground fissures and provide a scientific basis for preventing and reducing the disaster along Xi’an subway line 3,the actual activities and developmental characteristics of the fissures were found out emphatically through investigating geological environment and geological disasters in the wild,which were divided into 12 sections according to the intersect situation with the line,then they were described in detail.The annual activity of cracks and the impact of activity caused by the construction and operation of subway were analyzed,the activity trend was predicted.The influenced range of ground fissures on the subway was confirmed by quantitative calculation,meanwhile,the risk of intersect situation with the line was graded on the basis of analyzing the risk characteristics to the subway comprehensively.The results show that the ground fissures along Xi’an subway line 3 have the banded and directional features,meanwhile,they have the trend of sustainable development to get net work further.There are 7 sections having greater threat to the subway,which should be paid more attention.更多还原