River often overflow their bank.
河流常常淹没河岸。
Roller compacted concrete (RCC) will be used in section no. 6-no. 15 of the spillway dam, section no. 5 of the non - overflow dam near the left side bank and the left guide wall of Wan 'an Project.
万安水电站二期主体工程溢流坝6 ~ 15坝段、左岸非溢流坝5坝段和左导墙部分拟采用碾压混凝土筑坝技术。
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