温度变化对堆石料变形影响的试验研究

石北啸; 蔡正银; 陈生水

doi:10.11779/CJGE2016S2049

温度变化对堆石料变形影响的试验研究 English Version

石北啸^{1, 2},
蔡正银^{1, 2},
陈生水^{1, 2}

1. 水利部土石坝破坏机理与防控技术重点实验室,江苏南京210024;
2. 南京水利科学研究院岩土工程研究所,江苏南京 210024

基金项目: 水利部公益行业科研专项项目（201501033）; 中国博士后科学基金项目（2015M581833）; 南京水利科学研究院博士后基金项目（BH31401）

详细信息

作者简介:
石北啸(1976- ),男,副教授,主要从事粗粒料力学特性等方面的科研工作。E-mail: shibeixiao@nhri.cn。

计量
- 文章访问数: 0308
- HTML全文浏览量: 0
- PDF下载量: 0309
出版历程
- 收稿日期: 2016-05-18
- 发布日期: 2016-10-19

Experiments on influence of temperature on deformation of rock fills

SHI Bei-xiao^{1, 2},
CAI Zheng-yin^{1, 2},
CHEN Sheng-shui^{1, 2}

1. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-rock Dam of the Ministry of Water Resources, Nanjing 210024, China;
2. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China

摘要

摘要: 高土石坝建设使用的填筑堆石料在外界温度变化时,变形和力学特性会发生改变,可能影响坝体长期变形。首次采用自主研发的大型劣化三轴仪,通过低温、常温、高温及不同温度循环次数下的堆石料流变试验,研究温度对堆石料强度和变形的影响规律。试验发现：堆石料的流变变形受温度影响较大,温度升高,流变量减小,温度降低,流变量增大;经历温度循环次数越多,最终轴向及体积流变量越大。随着流变过程中试样温度的增加,轴向最终流变量呈减小趋势,随着冷却或增热次数增加,轴向和体积变形均呈逐渐减小的趋势。分析认为,温度循环造成堆石料一定程度上的损伤,导致其颗粒强度降低,变形量增大,经历多次温度循环后堆石料内部颗粒的劣化已经完成,变形基本不在明显。
- 高土石坝 /
- 堆石料 /
- 流变 /
- 温度
Abstract: The deformation and mechanical characteristics of rock fills in the construction of high earth-rock dams will be changed along with the temperature, which directly affect the deformation and safety of the dams. Through rheological tests on the rock fills under high, normal or low temperatures and different temperature cycle times by using the large degradation triaxial instrument, the effect of temperature on the strength and deformation of the rock fills is studied. The conclusion is drawn as follows: the deformation of rock fills is influenced by the temperature, the deformation decreases when the temperature increases, and the more the temperature cycle times, the higher the final axial deformation. Along with the increase of the temperature in rheological tests, the final axial deformation decreaseds, with the increase of the number of cooling or heating, and the final axial and volumetric deformations decrease. It is believed that the temperature cycle has a certain degree of damage to the rock fills, resulting in the decrease of the particle strength and the increase of the deformation, and the deformation is not obvious until the degradation of rock fills is completed after many times of the temperature cycle.
- earth-rock dam /
- rock fill /
- rheology /
- temperature

HTML全文

参考文献(13)

[1]	彭正光. 西北口面板堆石现蓄水7年变形分析[J]. 水利水电技术, 1999, 30(9): 24-27. (PENG Zheng-guang. Deformation analysis of 7 years of water storage in the northwest of China[J].Water Resources and Hydropower Engineering, 1999, 30(9): 24-27. (in Chinese))
[2]	MARANDA DAS N E, Advances in rockfill structure[M]. London: Kluwer Academic Publishers, 1991.
[3]	杨键. 天生桥一级水电站面板堆石坝沉降分析[J].云南水力发电, 2001, 17(2): 59-63. (YANG Jian. Settlement analysis of concrete face rockfill dam of Tianshengqiao Hydropower Station[J]. Yunnan Water Power, 2001, 17(2): 59-63. (in Chinese))
[4]	CETIN H, LAMAN M, ERTUNC A. Settlement and slaking problems in the world’s fourth largest rock-fill dam, the Ataturk Dam in Turkey[J]. Engineering Geological, 2000, 56(3): 225-242.
[5]	ALBERTO S F J, SAY O, PAULO C A, et al. Considerations on the shear strength behavior of weathered rock fills[C]// Committee for the 16th International Conference on Soil Mechanics and Geotechnical Engineering (16th ICSMGE). Osaka, 2005.
[6]	Riccardo Castellanza and Roberto Nova. Oedometric tests on artificially weathered carbonator soft rocks[J]. Journal of Geotechnical and Geo-environmental Engineering, 2004, 130(7): 28-739.
[7]	张丹. 软岩粗粒土的增湿及干湿循环试验研究[D]. 北京: 清华大学, 2006. (ZHANG Dan. Study of moistening and wetting-drying experiment of coarse-grained weak rock[D]. Beijing: Tsinghua University, 2006. (in Chinese))
[8]	张丹, 李广信, 张其光. 软岩粗粒土增湿变形特性研究[J]. 水力发电学报, 2009, 28(2): 52-55. (ZHANG Dan, LI Guang-xin, ZHANG Qi-guang. Research on moistening test of coarse-grained soil with weak rock[J]. Journal of Hydroelectric Engineering, 2009, 28(2): 52-55. (in Chinese))
[9]	LI Guang-xin, ZHANG Dan, HANG Qi-gong. Test research on deformation of coarse-grainded soil with weak rock due to wetting-drying cycle[C]// Proceedings of the 1st International Conference on Long Time Effects and Seepage Behavior of Dams. Nanjing, 2008: 122-126.
[10]	王海俊, 殷宗泽. 堆石料长期变形的室内试验研究[J]. 水利学报, 2007, 38(8): 914-919. (WANG Hai-jun, YIN Zong-zei. Experimental study on deformation of rockfill material due to long term cyclic wetting-drying[J].SHUILI XUEBAO, 2007, 38(8): 914-919. (in Chinese))
[11]	丁艳辉, 袁会娜, 张丙印. 堆石料非饱和湿化变形特性试验研究[J]. 工程力学, 2013, 30(9): 139-144. (DING Yan-hui, YUAN Hui-na, ZHANG Bing-yin. Unsaturated wetting deformation characteristics of rockfill materials[J]. Engineering mechanics, 2013, 30(9): 139-144. (in Chinese))
[12]	孙国亮, 张丙印, 张其光, 等. 不同环境条件下堆石料变形特性的试验研究[J]. 岩土力学, 2010, 31(5): 1413-1420. (SUN Guo-liang, ZHANG Bing-yin, ZHANG Qi-guang. Experimental study of deformation characteristics of rockfill under different environmental conditions[J]. Rock and Soil Mechanics, 2010, 31(5): 1413-1420. (in Chinese))
[13]	孙国亮. 堆石料风化过程中的抗剪强度和变形特性研究[D]. 北京: 清华大学, 2009. (SUN Guo-liang. Studies on shear strength and deformation characteristics of rockfill During Weathering[D]. Beijing:Tsinghua, 2009. (in Chinese))

施引文献

资源附件(0)

计量

文章访问数:
HTML全文浏览量: 0
PDF下载量:
被引次数: 0

温度变化对堆石料变形影响的试验研究 English Version

作者简介: 石北啸(1976- ),男,副教授,主要从事粗粒料力学特性等方面的科研工作。E-mail: shibeixiao@nhri.cn。

计量

出版历程

Experiments on influence of temperature on deformation of rock fills

计量

出版历程

目录

作者简介:
石北啸(1976- ),男,副教授,主要从事粗粒料力学特性等方面的科研工作。E-mail: shibeixiao@nhri.cn。