The regulating lock,the diversion sluice and the breast wall foundation in low reaches in the jury water diversion pivot engineering in Zhalong marshland need to be filled with harsh sand.

• 扎龙湿地应急调水枢纽工程中的节制闸、分水闸以及下游挡土墙基础有抗冻要求需要换填中粗砂。