抗滑桩加固效果评价——以二庄科北区滑坡治理工程为例

Evaluation of Reinforcement Effect of Anti-slide Piles in North of Erzhuangke Landslide in Yan'an City

目前对于滑坡的分析评价已经形成了一系列成熟的体系,但是对于滑坡治理效果的分析评价缺少方法和手段。为了评价滑坡治理效果,以二庄科北区滑坡治理工程为研究对象,运用土压力盒对滑坡治理工程抗滑桩所受的滑坡推力进行监测;运用理论公式计算抗滑桩所受土压力设计值;运用数值模拟软件模拟滑坡治理前和治理后的变形特征。分别得到桩后土压力监测值、设计值和数值模拟值,然后对抗滑桩所受土压力监测值、设计值和数值模拟值进行对比分析,结果显示土压力监测值小于设计值和数值模拟计算值,说明抗滑桩目前处于安全状态。最后通过对监测数据和数值模拟结果分析,综合评价得出该滑坡治理效果较好。该研究可为滑坡治理效果评价提供一套可行的方法。

At present,the analysis and evaluation of landslides has formed a series of mature system,but the analysis and evaluation of landslide treatment effects lack methods and means.In order to evaluate the effect of landslide treatment,the landslide treatment project in the north area of Erzhuangke was used as the research object,and the earth pressure cell was used to monitor the landslide thrust received by the anti-slide piles of the landslide treatment project.The theoretical formula was used to calculate the earth pressure design of the anti-slide pile values and numerical simulation software was used to simulate the deformation characteristics before and after landslide treatment.The monitoring value,design value and numerical simulation value of the earth pressure behind the piles were obtained.Then,the monitoring value of the earth pressure,the design value and the numerical simulation value of the anti-slide piles were compared and analyzed.The result shows that the monitoring value of the earth pressure is less than the design value and the numerical simulation calculation value,indicating that the anti-slide piles are currently in a safe state.Finally,through the analysis of monitoring data and numerical simulation results,it is known that the comprehensive evaluation of the landslide treatment effect is better.This research could provide a set of feasible methods for the evaluation of landslide treatment effect.