变形监测沉降网稳定性分析与应用

Stability Analysis and Application of Deformation Monitoring Settlement Network

变形监测的目的是利用观察变形体的形状与大小变化得知变形体的相关几何状态信息,以此分析与评价监测观察对象的安全状况。对于变形信息的获取,在变形监测时需要建立相应的监测网,而变形监测网会随着其他因素而发生变形,从而需要对监测网进行稳定性分析,沉降监测是变形监测的重点,如何选择沉降水准监测网的参考基准点,会对获取的沉降信息产生很大影响。结合工程实例,利用秩亏自由网平差所适用的解算范围及其特性计算水准网的高差改正数,使用平均间隙法识别监测网的稳定性,结合分块间隙法对监测网中具体点位移动做出的判断进行验证,形成一套适合于工程应用的稳定性分析流程与方法。

The purpose of deformation monitoring is to observe the shape and size of the deformed body to obtain the relevant geometric state information of the deformed body,so as to analyze and evaluate the safety status of the monitored object.For the acquisition of deformation information,a corresponding monitoring network needs to be established during deformation monitoring,and the deformation monitoring network will be deformed along with other factors.Therefore,the stability analysis of the monitoring network is needed.The settlement monitoring is the focus of deformation monitoring.How to select the reference point of the settlement level monitoring network will have a great impact on the acquired settlement information.Combined with engineering examples,the solution range and its characteristics applicable to the rank-defect free network adjustment are used to calculate the height difference correction of the level network,and the mean spacing method is used to identify the stability of the monitoring network.Combined with the blocking clearance inspection method to verify the judgment of the specific point movement in the monitoring network,a set of stability analysis procedures and methods suitable for engineering applications are formed.