微型桩在治理滑坡工程中受力特征试验研究

Experimental Study on Force Character of Micro-piles in Landslide Control Project

依托某滑坡治理工程,对微型桩在加固滑坡的受力情况进行监测,对微型桩在滑坡治理工程中的治理效果进行评价。在施工现场选择两个典型受力断面,人工开挖探井,紧贴微型桩布置土压力盒,获得了滑坡对微型桩推力的实时变化过程。通过对推力的变化趋势分析,对该滑坡加固后的稳定状态进行评价。通过滑坡体的现场监测数据与理论计算值进行对比,分析两者之间差别的原因,并得到两者之间转化的一个相关性系数β,可为同类地区性工程监测提供参考。

Based on a landslide control project, the force situation on micro-piles in landslide reinforcement was monitored with the control effect of such piles therein evaluated. At the construction site, two typical sections were selected by exploratory well made by artificial excavation and earth pressure cells set next to the micro-piles, to get real-time change process of thrust from the landslide against these piles. Through analysis of the thrust＇s changing trend, the stability of this landslide after reinforcement was evaluated; and then through comparison between the data from field monitoring on the landslide and the results from theoretical calculation, the reasons why the difference arises between the both were analyzed, and a correlation coefficient β expressing the conversion therebetween was obtained, which may be the reference to similar regional engineering monitoring.