求翻译：大坝填筑前，选用有代表性的填筑料，模拟正常填筑施工状况，对坝体各区料进行碾压试验，以确定合理的碾压参数。是什么意思？

Before filling the dam, a representative selection of filling material to simulate the normal embankment construction conditions, the rolling dam to test various materials to determine the reasonable rolling parameters.

DAM before reclamation, to choose a representative of reclamation and the simulation data normal reclaimed construction situation as well as for the dam body piercing the district to trials to determine reasonable crushing parameter.

In front of the dam reclamation, selects has the representative reclamation material, the simulation normal reclamation construction condition, carries on the roller compaction experiment to the dam various areas material, by determines the reasonable roller compaction parameter.

Before the dam embankment, selected representative filling materials to simulate normal filling construction, the dam of the material roller compaction experiment to determine reasonable roller compaction parameters.

正在翻译，请等待...