新的岩石节理粗糙度指标研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (978 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要首先，基于节理轮廓线提出一个剪切粗糙度指标(SRI)，新指标由3个粗糙度参数构成，描述节理平均起伏度、起伏的方向性、起伏分布特点以及粗糙的分形特性，并建立新指标与JRC之间的拟合关系。其次，基于三角形面积单元离散的三维节理面，将剪切粗糙度指标推广到三维形式，从而使得新指标能够描述节理的三维形貌特征。最后，以张拉型花岗岩节理作为算例，计算结果表明新指标能较好地反映节理的各向异性粗糙特性。新指标物理意义明确，计算方便，能够表征节理的主要粗糙特性，为进一步研究岩石节理的剪切力学特性奠定基础，具有重要的理论意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 节理, 起伏度, 粗糙度, 粗糙度指标, 分形

Abstract：Firstly，a new roughness index SRI is proposed based on joint profiles，which consists of three roughness parameters describing average undulation，directivity，distribution and fractal characteristics of joint profile roughness；and the relationship between SRI and JRC(joint roughness coefficient) is also established. Then，SRI is extended to three-dimensional(3D) form based on the triangular element network of joint surface to characterize 3D morphology characteristics of joint. Finally，SRI is used to quantify morphology of tensile granite joint and isotropic morphology characteristics can be represented. The new index has definite physical meaning and can be calculated conveniently. It also can characterize the primary roughness characteristics of rock joint. The new roughness index has set a foundation for further studying the shear mechanical characteristics of rock joint，and it has important theoretical significance for rock mechanics.

Key words： rock mechanics joint undulations roughness roughness index fractal

收稿日期: 2013-04-17

引用本文:

孙辅庭，佘成学，万利台. 新的岩石节理粗糙度指标研究[J]. 岩石力学与工程学报, 2013, 32(12): 2513-2519.
SUN Futing，SHE Chengxue，WAN Litai. RESEARCH ON A NEW ROUGHNESS INDEX OF ROCK JOINT. , 2013, 32(12): 2513-2519.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/I12/2513

[9]	BELEM T，HOMAND-ETIENNE F，SOULEY M. Quantitative parameters for rock joint surface roughness[J]. Rock Mechanics and Rock Engineering，2000，33(4)：217-242.
[10]	XIE H P，WANG J A，XIE W H. Fractal effects of surface roughness on the mechanical behavior of rock joints[J]. Chaos，Solitons and Fractals，1997，8(2)：221-252. " target="_blank">
[11]	XIE H P，WANG J. Direct fractal measurement of fracture surfaces[J]. International Journal of Solids and Structures，1999，36(20)：3 073- 3 084. " target="_blank">
[13]	KULATILAKE P H S W，UM J，PANDA B B，et al. Development of new peak shear-strength criterion for anisotropic rock joints[J]. Journal of Engineering Mechanics，1999，125(9)：1 010-1 017. " target="_blank">
[15]	RE F，SCAVIA C. Determination of contact areas in rock joints by X-ray computer tomography[J]. International journal of rock Mechanics and Mining Sciences，1999，36(7)：883-890. " target="_blank">
[3]	TSE R，CRUDEN D M. Estimating joint roughness coefficients[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1979，16(5)：303-307. " target="_blank">
[6]	GRASSELLI G. Shear strength of rock joints based on quantified surface description[J]. Rock Mechanics and Rock Engineering，2006，39(4)：295-314.
[14]	GENTIER S，RISS J，ARCHAMBAULT G，et al. Influence of fracture geometry on shear behavior[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(1)：161-174. " target="_blank">
[12]	ODLING N E. Natural fracture profiles，fractal dimension and joint roughness coefficients[J]. Rock Mechanics and Rock Engineering，1994，27(3)：135-153. " target="_blank">
[16]	SAKELLARIOU M，NAKOS B，MITSAKAKI C. On the fractal character of rock surfaces[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1991，28(6)：527-533. " target="_blank">
[1]	夏才初，孙宗颀. 工程岩体节理力学[M]. 上海：同济大学出版社，2002：1-2.(XIA Caichu，SUN Zongqi. Mechanics of rock mass joints[M]. Shanghai：Tongji University Press，2002：1-2.(in Chinese)) " target="_blank">
[2]	BARTON N，CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics，1977，10(1/2)：1-54. " target="_blank">
[4]	YANG Z Y，LO S C，DI C C. Reassessing the joint roughness coefficient (JRC) estimation using Z2[J]. Rock Mechanics and Rock Engineering，2001，34(3)：243-251.
[5]	RASOULI V，HARRISON J P. Assessment of rock fracture surface roughness using Riemannian statistics of linear profiles[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(6)：940-948.
[7]	GRASSELLI G，WIRTH J，EGGER P. Quantitative three-dimensional description of a rough surface and parameter evolution with shearing[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(6)：789-800.
[8]	GRASSELLI G，EGGER P. Constitutive law for the shear strength of rock joints based on three-dimensional surface parameters[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(1)：25-40.