北京地面沉降灾害评估指标及标准划分  

Assessment Index and Standard of Ground Subsidence Disaster in Beijing

作　　者：范晓岭[1] 张青[1] 

机构地区：[1]北京交科公路勘察设计研究院有限公司,北京100191

出　　处：《都市快轨交通》2016年第4期89-92,共4页Urban Rapid Rail Transit

摘　　要：随着北京市地铁工程的大规模兴建,地面沉降灾害对其危害逐渐显现出来。地铁线路具有线路长、规模大,沿线可能穿越不同的工程和水文地质单元。如何在地质灾害危险性评估中,科学、客观、合理地对地面沉降灾害进行评估,就显得尤为重要。在前人工作的基础上,建议引入单位沉降速度差异率这一指标,与地面累计沉降量、沉降速度共同作为地铁等重大线性工程地面沉降地质灾害危险性评估的指标,阐述各项指标值的获得方法,并对指标进行无量纲化处理,建立相应的地灾评估方法。In recent years, with the large-scale construction of subway projects in Beijing, the harm of ground subsidence has gradually manifested themselves. Subway lines are long lines, and of large scales and may cross different engineering and hydrogeological units, and even different land subsidence areas. Thus, it is particularly important to assess ground subsidence scientifically, objectively and rationally in geological hazard assessment. On the basis of the previous work, this article suggests introducing the index of ＂Variability of Unit Settling Velocity＂, together with accumulative ground settlement, and settling velocity as the ground subsidence geological hazard assessment index in subway and major engineering projects to establish the method of disaster evaluation.

关 键 词：地面沉降 评价指标 评价标准 单位沉降速度差异率 

分 类 号：U231[交通运输工程—道路与铁道工程]