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三江平原地区分布着大片的沼泽地块，对轻沼泽区通常采用 “抢化层 ”方法，即利用冻土的承载能力化一层推一层，一直推完淤泥层；对重沼泽区施工采用旱季导流法；对深水条件下的重沼泽区施工，宜在高平段集中机械抢推化层，要求 6月中旬成型，排干下游区开出口，边挖边排；对大面积浅层水个别段利用就近边沟排水，其余段采用 “群车推泥排水 ”办法来解决。
Large swamp plots are distributed in the Sanjiang Plain, and “grabbing stratums” are commonly used in the light marsh areas. That is, one layer is pushed by the bearing capacity of the frozen soil to push the silt layer all the time. In the construction of heavy marsh area under deepwater conditions, it is advisable to concentrate the mechanical thrusting layer in the Gaoping section and require that the middle section of the middle of June be formed and drained to open the exit of the downstream area while digging and edge rowing; The individual sections of the stratified water use the drainage near the ditches, and the remaining sections adopt the method of “pushing the muddy water and drainage by groups of vehicles”.