Design and Implementation of Geophysical Monitoring and Remote Sensing during a Full Scale Embankment Internal Erosion Test

摘要

This paper describes the conception and deployment of a multi-geophysics and remote sensing approach to monitoring internal erosion in a test embankment that was loaded to increase seepage and initiate internal erosion in Booncschans, Netherlands in fall 2013. IJkdijk is a full-scale field testing embankment constructed to facilitate sensor validation testing for monitoring embankment loading and failure conditions. The embankment was constructed of a single zone high plasticity clay embankment with sand foundation. The test embankment was subjected to reservoir loads simulating tidal and storm surge conditions known to induce internal erosion in actual embankments. Geophysical monitoring of subsurface conditions was pursued using self-potential and passive seismic methods. Concurrent terrestrial lidar remote sensing methods were implemented to track millimeter scale deformation. Each of these monitoring approaches was implemented successfully and yielded useful spatial and temporal information throughout the seven days of testing, from initial reservoir loading to completion of the test.