含显著沉积弱面砂岩加卸荷破坏试验研究

王乐华; 陈星; 党莉

doi:10.6052/j.issn.1000-4750.2012.01.0037

含显著沉积弱面砂岩加卸荷破坏试验研究

1.
三峡大学三峡库区地质灾害教育部重点实验室，宜昌 443002;
2.
中国长江三峡集团公司枢纽管理局，宜昌 443002

基金项目: 国家自然科学基金项目(50909052)；教育部重点项目(212114)

详细信息

作者简介:
陈星(1985―)，男，湖北汉川人，助理工程师，硕士，从事水电和公路工程方面的项目管理工作(E-mail: chenxing1985@foxmail.com)；党莉(1986―)，女，湖北五峰人，硕士生，从事地质工程方面的研究(E-mail: dangli2323@ 126.com).

通讯作者:
王乐华(1977―)，男，安徽怀宁人，副教授，博士，从事岩土工程方面的教学与研究(E-mail: lehuatg@126.com).

中图分类号: TU45
计量
- 文章访问数: 887
- HTML全文浏览量: 23
- PDF下载量: 182
出版历程
- 收稿日期: 2013-05-23
- 修回日期: 2013-05-23
- 刊出日期: 2013-05-24

EXPERIMENTAL STUDY ON THE FAILURE OF SANDSTONE WITH NOTABLE BEDDING UNDER LOADING AND UNLOADING

1.
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China;
2.
Three Gorges Complex Administration Rureau, China Three Gorges Corporation, Yichang 443002, China

摘要

摘要: 层状岩体加卸荷条件下的各向异性规律对于指导工程设计、施工具有重要意义。对含显著沉积弱面的水平、垂直层理的宜昌砂岩加载、卸载破坏的试验研究表明：1) 水平、垂直层理砂岩回弹值、纵波波速与强度存在一定的相关性，其基本规律是回弹值或者纵波波速越大，岩体强度越大；2) 无论采用加载还是卸载破坏方式，相同围压下，垂直层理岩体的强度一般大于水平层理岩体；3) 无论是水平还是垂直层理岩体，卸荷破坏峰值强度在低围压下高于加载破坏强度，而高围压下低于加载破坏强度；4) 该文试验条件下，加卸载破坏形式主要是剪切破坏，根据Mohr-Coulomb准则预测的破坏角和实测值非常接近，水平和垂直层理岩体加卸载破坏的破裂面并未受到沉积弱面的影响。
- 沉积弱面 /
- 砂岩 /
- 卸荷 /
- 回弹值 /
- 纵波波速 /
- 强度
Abstract: The anisotropy rules of stratified rock under loading or unloading are significant to guide the engineering design and construction. The research results on the failure of sandstones with notable horizontal or vertical bedding in Yichang shows that: 1) there is a certain correlation between the rebounding data, longitudinal wave velocity and strength of rock. The basic law is that the larger the rebounding data or longitudinal wave velocity, the higher the strength of the rock. 2) No matter in the failure mode of loading or unloading, the strength of the sandstones with vertical bedding is normally higher than that with horizontal bedding under the same confining pressure. 3) No matter the sandstones with horizontal or vertical bedding, under low confining pressure, the unloading failure peak strength of which is higher than that under loading condition, but under high confining pressure, the phenomenon is opposite. 4) The loading and unloading failure modes of the sandstone are mainly shear failure. The predicted values of failure angle of the sandstone specimens according to Mohr-Coulomb criterion are very close to the measured values. The fracture surface of the sandstone specimens with horizontal or vertical bedding are not affected by the bedding.
- bedding /
- sandstone /
- unloading /
- rebounding data /
- longitudinal wave velocity /
- strength

HTML全文

参考文献(14)

[1]	鲜学福)层状岩体破坏机理[M]. 重庆: 重庆大学出版社, 1989: 10. Xian Xuefu. Failure mechanism of stratified rock mass [M]. Chongqing: Chongqing University Press, 1989: 10. (in Chinese）
[2]	邓涛),(杨林德). 各向异性岩石纵、横波的波速比特性研究[J]. (岩石力学与工程学报), 2006,25(10):2023―2029. Deng Tao, Yang Linde. Characteristics of velocity ratio of p-wave and s-wave for anisotropic rocks [J]. Chinese Journal of Rock Mechanics and Engineering,2006,25(10): 2023―2029. (in Chinese）
[3]	(邓继新),(史謌),(刘瑞珣),等. 泥岩、页岩声速各向异性及其影响因素分析[J]. (地球物理学报), 2004,47(5):862―868. Deng Jixin, Shi Ge, Liu Ruixun, et al. Analysis of the velocity anisotropy and its affection factors in shale and mudstone [J]. Chinese Journal of Geophysics,2004,47(5): 862―868. (in Chinese）
[4]	Homand F, Morel E, Henry J P,et al. Characterization of the moduli of elasticity of an anisotropic rock using dynamic and static methods [J]. International Journal of Rock Mechanics and Mining Sciences, 1993,30(5):527―535.
[5]	Tien Y M, Kuo M C. A failure criterion for transversely isotropic rocks [J]. International Journal of Rock Mechanics and Mining Sciences, 2001,38(3):399―412.
[6]	Tien Y M, Tsao P F. Preparation and mechanical properties of artificial transversely isotropic rock [J]. International Journal of Rock Mechanics and Mining Sciences, 2000,37(6):1001―1012.
[7]	(何沛田),(黄志鹏). 层状岩石的强度和变形特性研究[J]. (岩土力学), 2003,24(增1):1―5. He Peitian, Huang Zhipeng. Strength and deformation characteristic of stratified rock [J]. Rock and Soil Mechanics, 2003, 24(Suppl 1): 1―5. (in Chinese）
[8]	(苏志敏),(江春雷), Ghafoori M. 页岩强度准则的一种模式[J]. (岩土工程学报), 1999,21(3):311―314. Su Zhimin, Jiang Chunlei, Ghafoori M. One model of the strength criteria of shale [J]. Chinese Journal of Geotechnical Engineering,1999,21(3): 311―314. (in Chinese）
[9]	(冒海军),(杨春和). 结构面对板岩力学特性影响研究[J]. (岩石力学与工程学报), 2005,24(20):3651―3656. Mao Haijun, Yang Chunhe. Study on effects of discontinuities on mechanical characters of slates [J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(20): 3651―3656. (in Chinese）
[10]	(张亚非)建筑结构检测[M]. 武汉: 武汉工业大学出版社, 1995: 21―25. Zhang Yafei. Building structure detection [M]. Wuhan: Wuhan University of Technology Press, 1995: 21―25. (in Chinese）
[11]	(刘宗平),(王润起),(吴小林),等. 施密特锤试验数据处理方法及其在预估岩石可钻性中的应用[J]. (现代地质), 1990,4(4):113―125. Liu Zongping, Wang Runqi, Wu Xiaolin, et al. Schmidt hammer rebound data processing method and its application in estimation of rock drill ability [J]. Modern Geology,1990,4(4): 113―125. (in Chinese）
[12]	(黄平),(佴磊),(张振营). 岩石抗压强度点荷试验与回弹试验相关性研究[J]. (路基工程), 2008(5):70―71. Huang Ping, Er Lei, Zhang Zhenying. Correlation study on point load and rebound test of compressive strength of rock [J]. Subgrade Construction, 2008(5): 70―71. (in Chinese）
[13]	(魏安),(蒋爵光). 铁路岩石边坡稳定性分类的逐步判别分析[J]. (西南交通大学学报), 1991(2):49―54. Wei An, Jiang Jueguang. Progressive discrimination analysis for the classification of stability of railway rock slopes [J]. Journal of Southwest Jiaotong University, 1991(2): 49―54. (in Chinese）
[14]	(赵明阶),(徐蓉). 岩石声学特性研究现状及展望[J]. (重庆交通学院学报), 2000,19(2):80―85. Zhao Mingjie, Xu Rong. The present situation and prospect of the acoustic properties research in rock [J]. Journal of Chongqing Jiaotong Institute,2000,19(2): 80―85. (in Chinese） (上接第171页)

施引文献

资源附件(0)

在线预览下载 (8.9MB)

计量

文章访问数: 887
HTML全文浏览量: 23
PDF下载量: 182
被引次数: 0

DANG Li

1.
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China;

含显著沉积弱面砂岩加卸荷破坏试验研究

作者简介: 陈星(1985―)，男，湖北汉川人，助理工程师，硕士，从事水电和公路工程方面的项目管理工作(E-mail: chenxing1985@foxmail.com)； 党莉(1986―)，女，湖北五峰人，硕士生，从事地质工程方面的研究(E-mail: dangli2323@ 126.com).

通讯作者: 王乐华(1977―)，男，安徽怀宁人，副教授，博士，从事岩土工程方面的教学与研究(E-mail: lehuatg@126.com).

计量

出版历程

EXPERIMENTAL STUDY ON THE FAILURE OF SANDSTONE WITH NOTABLE BEDDING UNDER LOADING AND UNLOADING

计量

出版历程

目录

DANG Li

作者简介:
陈星(1985―)，男，湖北汉川人，助理工程师，硕士，从事水电和公路工程方面的项目管理工作(E-mail: chenxing1985@foxmail.com)；党莉(1986―)，女，湖北五峰人，硕士生，从事地质工程方面的研究(E-mail: dangli2323@ 126.com).

通讯作者:
王乐华(1977―)，男，安徽怀宁人，副教授，博士，从事岩土工程方面的教学与研究(E-mail: lehuatg@126.com).