膨胀土（岩）渠坡位移监测分析与预警

Displacement monitoring of expansive soil（ rock） canal slope and pre-warning

为了解强膨胀土（岩）渠道边坡的变形规律,除按传统的方法布置监测系统外,还需对土壤含水量和位移等重要监测量展开自动化监测。以南水北调中线工程南阳膨胀土渠坡安全监测为例,详细介绍了自动化监测系统的构成和监测布置。该系统很好地记录了渠道边坡在开挖和强降雨过程中的位移情况,并对渠道开挖过程中渠坡滑坡进行了准确预警,相关经验可供类似工程借鉴参考。

To understand the deformation laws of strong expensive soil（ rock） slope,in addition to traditional monitoring layout,the automatic monitoring can be adopted to better measure the important index including the water content and displacement.Taking the safety monitoring of Nanyang expensive soil（ rock） slope section,MRP of South- to- North Water Diversion as an example,the structure and layout of the automatic monitoring system is introduced in detail. The displacement of the canal slope during the excavation and heavy rainfall was recorded,and the sliding of the canal in the excavation was pre- warned correctly.