An adhesive dike slot (31) is formed around the joint concave bottom, thus preventing the main body and the neck back side from dirtiness caused by excessive adhesive overflow.
粘合剂堤槽(31)形成在接合凹底部的周边，以防止用粘合剂连接时过量粘合剂溢出弄脏主体及琴颈的背面。
2
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.