土石坝粗粒料的湿化动力特性试验研究  

Experimental Study on Wetting Dynamic Characteristics of Coarse Grained Materials in Earth Rockfill Dam

作　　者：张宏洋 马聪 刘建龙 孙亚东 宋子屹 丁泽霖 韩鹏举 ZHANG Hong-yang;MA Cong;LIU Jian-long;SUN Ya-dong;SONG Zi-yi;DING Ze-lin;HAN Peng-ju(College of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering of Henan Province,Zhengzhou 450046,China,3.Management Division of Jiangsu Qinhuai River Hydraulic Engineering,Nanjing 210022,China)

机构地区：[1]华北水利水电大学水利学院,河南郑州450046 [2]黄河流域水资源高效利用省部共建协同创新中心,河南郑州450046 [3]江苏省秦淮河水利工程管理处,江苏南京210022

出　　处：《水电能源科学》2023年第5期63-66,75,共5页Water Resources and Power

基　　金：国家自然科学基金项目(51609087,51709114);2021河南省高等学校重点科研项目(21A570001)。

摘　　要：采用大型静动力三轴试验仪对筑坝粗粒料做了常规和湿化三轴试验,研究了粗粒料在湿化变形后动力特性的变化情况,并与常规三轴动力试验结果进行对比。结果表明,粗粒料的动力特性受湿化变形的影响较大,粗粒料的动力性能参数发生了一定程度的衰减,对比分析两种试验的Hardin-Drnevich模型参数,发现湿化变形对k_(2)、λ_(max)影响较为明显,数值发生衰减,但对n、k_(1)的影响不明显。Conventional and wetting triaxial experiments were carried out on coarse grained materials for dam construction with a large static and dynamic triaxial tester.The dynamic characteristics of coarse grained materials after wetting deformation were studied,and the results were compared with those of conventional triaxial dynamic experiments.The experimental results show that the dynamic characteristics of coarse grained materials are greatly affected by wetting deformation,and the dynamic performance parameters of coarse grained materials are attenuated to a certain extent.The Hardin-drnevich model parameters of the two experiments were compared and analyzed.It was found that wetting deformation had a significant effect on k_(2) and λ_(max),and the numerical values were attenuated,but the effects on n and k_(1) were not significant.

关 键 词：粗粒料 湿化变形 动力特性 Hardin-Drnevich模型 动力三轴试验 

分 类 号：TV641[水利工程—水利水电工程]