Debris Flows and Landslides - River Dynamics and Integrated River Management - page 242

Some engineering measures have been taken to control landslides and avalanches. In the Three Gorges
reaches of the Yangtze River, drainage systems have been improved to reduce the water content of the
soil and concrete walls were constructed to reduce the risk of landslides. Figure 4.65(a) shows a drainage
system on a landslide body in the upper Yangtze River basin installed to lower the groundwater table and
Fig. 4.65(b) shows concrete walls installed to stabilize a sliding body.
Fig. 4.64 The monitoring system used for prediction of the Xintan Landslide of 12 June 1985
Fig. 4.65 (a) A drainage system on a landslide body in the upper Yangtze River basin installed to lower the groundwater
table; and (b) Concrete walls installed to stabilize a sliding body