The invention discloses a water drainage
system for a water-enriched edge slope. The water drainage
system consists of a
water collection system and a water drainage system, wherein the
water collection system consists of hollow anchor rods, porous concrete and
grout pipes; the water drainage system consists of a gravel reversed filter layer, a water
isolation layer and a control valve; directed
pipe heads are arranged at the front ends of the hollow anchor rods;
grout plugs and the
grout pipes are arranged in the hollow anchor rods; outer sleeve heads are arranged at the rear ends of the hollow anchor rods; and the porous concrete is pressed into the soil edge slope and is dispersed along a thin area of the soil to form a root-type network. By
simulation of the ecological slope protection principle, the water drainage system has anchoring and reinforcing effects and facilitates stabilization of the edge slope; the control valve is arranged between the gravel reversed filter layer and a soil
retaining wall, so that water loss and a
threat to the stability of the edge slope due to
reverse osmosis of water into the edge slope caused by changes of the
water level in front of the wall are effectively avoided, and the problem that
seawater with high
salinity affects the
water quality of underground water of the edge slope is solved; and furthermore, under a condition that the underground
water level of the edge slope is relatively high, upper and lower water discharging holes simultaneously work to improve the water drainage efficiency.