Material Weakening of Slip Zone Soils Induced by Water Level Fluctuation in the Ancient Landslides of Three Gorges Reservoir

<table>Schematic diagram of the exploratory tunnel in the Huangtupo landslide (plan view).</table>

Advances in Materials Science and Engineering

Figure 2: Material Weakening of Slip Zone Soils Induced by Water Level Fluctuation in the Ancient Landslides of Three Gorges Reservoir 