基于现场监测数据及先进的数值分析方法,建立土石坝全生命周期的工程安全评价及预警信息系统,是目前土石坝发展的必然趋势.以糯扎渡高心墙堆石坝为依托,开发了理论严密、方法先进且可靠实用的大坝工程安全评价与预警信息管理系统.该系统由系统管理模块、安全指标模块、监测数据与工程信息模块、数值计算模块、反演分析模块、安全预警与应急预案模块和数据库及管理模块共7个模块构成.其中,数值计算和反演分析模块可利用所取得的坝体监测数据,进行渗流、大坝应力变形、坝体裂缝、地震动力反应和坝坡稳定等土石坝关键计算分析,是本系统的核心部分.利用工程前期已经取得的坝体变形监测数据,对坝体进行了变形反演分析并对大坝关键时间结点的形态进行了预测分析.%Based on the monitoring data, a practical information management system of safety assessment and warning for Nuozhadu earth-rockfill dam is developed. The system includes system management module, safety criteria module, monitoring data and engineering information module, numerical calculation module, back-analysis module, safety warning and contingency plan module, and data base and management module. The numerical calculation and back-analysis modules are the key parts, which perform analysis of seepage, stress and deformation of dam, crack of dam, dynamic response and slope stability. The parameters of constitutive model are back-analyzed by using the monitoring data and the behaviors of the dam at some important time are predicted.
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