苗尾水电站心墙防渗土料压实质量检测方法及控制标准

高土质心墙堆石坝采用砾质土作为心墙防渗料已成为发展趋势,砾质土的压实质量是施工控制的重点。目前常用于大坝防渗料填筑施工压实效果检测的几种控制方法的对比分析表明,采用三点击实法检测粒径小于20mm细料的压实度作为控制标准,全料的压实度作为复核标准是合适的。用优选的压实度检测方法对苗尾水电站防渗土料进行了碾压试验,并提出了其压实度控制标准的建议。

Study on Compaction Quality Test Methods and Control Standards of Impervious Core Earth Material for Miaowei Dam

Using gravel soil as impervious core material for high rock-fill dams with earth core wall is becoming popular,and the compaction quality of gravel soil is the key of dam construction.After comparing the quality control methods of common compaction tests,it is practical to take the compaction degree of fine material with particle diameter less than 20 mm as quality control standard and the compaction degree of complete material as check standard by using three-point compaction test.By the rolling tests of i...