Abstract：Based on the filling gradation of rockfill of Aertashi high concrete face dam under construction, field large-scale relative density tests are carried out. The three-factor map is used to study the design method of the double-control filling standards of porosity and relative density of the rockfill. Based on the pit detection data of the rockfill, the corresponding on-site filling quality control process is explained. The results show that: (1) The filling gradation of the rockfill of Aertashi concrete face dam is basically in accordance with the fractal distribution, the fractal dimension of particle size is between 2.516 and 2.633, and the compaction performance is superior. (2) From the different scales of the similar method, the relative density test results of the rockfill can be obtained. The scale effect of dry density of the rockfill is already small when the maximum particle diameter reaches 400 mm. The three-factor map can be directly produced by using the relative density test results of the maximum control particle diameter equal to gradation of 400 mm as the basis for evaluating the compaction quality of the rockfill on site. (3) For the rockfill satisfying the design porosity of not more than 19%, the relative density must not be less than 0.76 if the relative density is required to be compacted. There are still 15% of the test pits that do not meet the compaction requirements of the double-control filling standards. The porosity of the rockfill is greatly affected by the gradation. The rockfill that meets the porosity requirements cannot guarantee sufficient compaction. It is theoretically not suitable as the compaction standards for the rockfill. (4) The double-controlled filling standards of porosity and relative density provide a theoretical basis for the design of well-graded and fully compacted rockfill. They can better meet the deformation control requirements of high rockfill dams and are the foundation for ensuring the safety of theirconstruction and operation.
朱晟. 高面板坝堆石体的填筑质量控制指标研究与应用[J]. 岩土工程学报, 2020, 42(4): 610-615.
ZHU Sheng. Study and application of control indices for filling quality of highconcrete face rockfill dams. Chinese J. Geot. Eng., 2020, 42(4): 610-615.
[1] STEPHENSON R J.Relative density tests on rock fill at Carters Dam[C]// Evaluation of Relative Density and Its Role in Geotechnical Projects Involving Cohesionless Soils, ASTM, ST P 523, 1973: 234-250. [2] Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table: ASTM—D4253—2016[S]. 2016. [3] 冯冠庆, 杨荫华. 堆石料最大指标密度室内试验方法的研究[J]. 岩土工程学报, 1992, 14(5): 37-45. (FENG Quan-qing, YANG Yin-hua.Laboratory test methods for maximum index density of rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 1992, 14(5): 37-45. (in Chinese)) [4] 朱晟, 钟春欣, 王京, 等. 高心墙堆石坝填筑标准的试验研究[J]. 岩土工程学报, 2019, 41(3): 108-115. (ZHU Sheng, ZHONG Chun-xin, WANG Jing, et al.Test research on the filling standard of high rockfill dam[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(3): 108-115. (in Chinese)) [5] 蒋国澄, 付志安, 凤家骥. 混凝土面板堆石坝工程[M]. 武汉: 湖北科学技术出版社, 1997, 12: 54. (JIANG Guo-cheng, FU Zhi-an, FENG Jia-ji. CFRD Engineering[M]. Wuhan: Hubei Science & Technology Press, 1997, 12: 54. (in Chinese)) [6] 混凝土面板堆石坝设计规范:DL/T 5016—2011[S]. (Design Code for Concrete Face Rockfill Dams: DL/T 5016—2011[S]. 2011. (in Chinese)) [7] 碾压式土石坝设计规范:DLT 5395—2007[S]. (Design Code for Roller Compacted Earth-Rock Dam: DLT 5395—2007[S]. 2007. (in Chinese)) [8] 朱晟, 钟春欣, 郑希镭, 等. 堆石体的填筑标准与级配优化研究[J]. 岩土工程学报, 2018, 40(1): 108-115. (ZHU Sheng, ZHONG Chun-xin, ZHENG Xi-lei, et al.Filling standards and gradation optimization of rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(1): 108-115. (in Chinese)) [9] 田堪良, 张慧莉, 张伯平, 等. 超径无黏性粗粒土填筑标准的确定方法[J]. 西北农林科技大学学报 (自然科学版), 2002, 30(6): 193-197. (TIAN Kan-liang, ZHANG Hui-li, ZHANG Bo-ping, et al.The method for determining the placement standards of oversized cohesionless coarse grained soil[J]. Journal of Northwest A & F University (Natural Science Edition), 2002, 30(6): 193-197. (in Chinese)) [10] 土石筑坝材料碾压试验规程:NB/T 35016—2013[S]. 2013. (Earth and Rock Dam Material Rolling Test Procedure:NB/T 35016—2013[S]. 2013. (in Chinese)) [11] 水电水利工程砂砾石料压实质量密度桶法检测技术规程:T/CEC 5001—2016[S]. (Testing Technical Specification on Sand-Gravel Compaction Quality Test with Density Bucket Method for Hydropower Engineering: T/CEC 5001—2016[S]. 2016. (in Chinese)) [12] 张正勇, 包永侠, 唐德胜. 阿尔塔什大坝堆石料相对密度研究和施工应用[J]. 水力发电, 2018, 44(2): 40-51. (ZHANG Zheng-yong, BAO Yong-xia, TANG De-sheng.Study on relative density of rockfill material in aertashi dam and its application in dam construction[J].Waterpower, 2018, 44(2): 40-51. (in Chinese)) [13] 朱晟, 邓石德, 宁志远, 等. 基于分形理论的堆石料级配设计方法[J],岩土工程学报, 2017, 39(6): 1151-1155. (ZHU Sheng, DENG Shi-de, NING Zhi-yuan, et al.Gradation design method of rockfill materials based on the fractal theory[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(6): 1151-1155. (in Chinese)) [14] HARDIN B O.1-D Strain in normally consolidated cohesionless soils[J]. Journal of Geotechnical Engineering, ASCE, 1987, 113(12): 1449-1467. [15] COOKE J B. Rockfill and rockfill dams[C]// Proceedings International Symposium on High Earth-rockfill Dams, 1993, Beijing: 1-24. [16] 水工建筑物抗震设计标准:GB 51247—2018[S]. 2018. (Standard for Seismic Design of Hydraulic Structures:GB 51247—2018[S]. 2018. (in Chinese)) [17] 混凝土面板堆石坝施工规范:DLT 5128—2009[S]. 2011. (DLT 5128—2009 Construction Code for Concrete Face Rockfill Dams[S]. 2011. (in Chinese))
