平庄西露天煤矿滑坡灾害远程监测实例分析

Example analysis for landslide hazard remote monitoring at the Pingzhuang west open-pit mine

在远程实时监测系统前期研究开发基础上,以平庄露天矿边坡为现场应用研究对象,开展了滑坡监测及预报的现场试验研究.对露天矿山边坡在采动条件下,由稳定到不稳定直至滑动的全过程,进行远程实时监测.至2007年1月14日产生滑坡.在获得宝贵的大型现场试验数据基础上,对比分析了边坡的滑动破坏特征、位移和远程监测曲线,揭示了远程监测曲线斜率增大预示边坡稳定系数降低,曲线斜率突增处是预报特征点.试验表明,该方法实际应用于滑坡灾害监测预报是有效的,与传统的位移监测方法相比,不仅实现了远程无线监测,而且在预报时间上显著提前.

On the basis of previous research and development of a remote real-time monitoring system, a case study of the openpit mine slope in Ping Village was carried out, and field tests on landslide monitoring and forecasting were implemented. Under the conditions of working on the open-pit mine slope, remote real-time monitoring was put forth for the whole landslide process. The day of the landslide was Months 14, 2007. According to the precious data of large-scale field test, comparative analysis was conducted to the sliding destruction characteristics, displacement and monitoring curve of the slope, which indicated that the slope increase of the monitoring curve could forecast the decrease of the stable coefficient, moreover, a sudden increase point of the monitoring curve was the feature point of prediction. The tests showed that these methods were scientific and effective for landslide hazard monitoring and forecasting. Compared with the traditional horizontal displacement monitoring method, these methods could also achieve remote wireless monitoring, and could significantly advance the forecasting time of a landslide.