老龙口土石坝坝壳料相对密度曲线确定试验

Experiment on determination of relative density curve of shell material for Laolongkou Earth-rockfill Dam

粘土心墙土石坝的坝壳砂砾料填筑施工中的压实标准以相对密度控制。老龙口水利枢纽工程大坝坝壳填筑用砂砾料为采金弃料,该料在级配参数上与天然砂砾料有较大的特异性。目前对于该种坝弃料的试验方法还没有一种全面、系统、完善的科学方法和规程可遵循。老龙口水利枢纽工程通过各种现场试验最终确定了适用的相对密度曲线。

The compaction standards of the sand-gravel material for filling the dam shell of earth-rockfill dam with clay core are conventionally controlled by the relative density.The sand-gravel material for filling the shell of the dam of Laolongkou Water Control Project is just from a gold-mining tailing,which has a greater specificity if compared with the natural materials for the grade-parameter.At present,no any comprehensive,systematic and scientific methods and procedures for the test on the material can be f...