充填岩石节理法向闭合变形特性试验研究

doi:10.13722/j.cnki.jrme.2023.0676

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1917 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要岩石节理法向闭合变形特性是影响岩体力学和渗流特性的关键因素之一，天然岩石节理中常常充填有砂等充填物而形成充填岩石节理。目前关于非充填岩石节理法向闭合变形特性的研究成果较为丰富，但针对充填岩石节理法向闭合变形特性的研究成果较为欠缺。为此，采用类岩石材料浇筑具有第5和8条Barton标准剖面线形貌特征的人工模拟岩石节理，以石英砂作为充填介质，制备具有9种充填度的人工模拟充填砂岩石节理试件，对其开展法向闭合变形试验，得到具有不同充填度人工模拟充填砂岩石节理试件的法向闭合变形曲线，在此基础上分析充填度对充填岩石节理法向闭合变形的影响，并采用幂函数分别拟合具有不同充填度的充填岩石节理法向闭合变形曲线和对应的最大法向闭合变形量，建立了充填岩石节理法向闭合变形幂函数经验模型和最大法向闭合变形量随充填度变化的幂函数经验公式。

	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
	肖维民1
	2
	朱斌1
	2
	刘伟超1
	2
	朱占元3

关键词 ：岩石力学, 充填岩石节理, 法向闭合变形, 充填度

Abstract：The normal closure of rock joint is one of the key factors affecting the mechanical and seepage behaviours of rock masses，and sand particles or other gouges are often filled in natural rock joint to form an infilled rock joint. However，there are abundant researches on the normal closure deformation of clean rock joints，while few researches on the normal closure of infilled rock joints have been reported. In this study，artificial rock joints with the morphology of the 5th and 8th Barton?s standard profiles were prepared by using rock-like materials，and quartz sand was chosen as the filling material to prepare artificial sand-infilled rock joint specimens with nine filling degrees. Then laboratory normal closure tests were conducted on these artificial sand-infilled rock joint specimens and their normal closure curves were obtained. According to the experimental results，the influences of infilled material on the normal closure of sand-infilled rock joints were analysed，and the power function was used to fit the normal closure curve and the maximum normal closure of sand-infilled rock joints with different filling degrees，thus establishing the empirical normal closure model and the empirical maximum normal closure formula of the infilled rock joint，respectively.

Key words： rock mechanics infilled rock joint normal closure deformation filling degree

引用本文:

肖维民1，2，朱斌1，2，刘伟超1，2，朱占元3. 充填岩石节理法向闭合变形特性试验研究[J]. 岩石力学与工程学报, 2024, 43(S2): 3832-3840.
XIAO Weimin1，2，ZHU Bin1，2，LIU Weichao1，2，ZHU Zhanyuan3. Experimental research on the normal closure deformation of infilled rock joints. , 2024, 43(S2): 3832-3840.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.0676 或 https://rockmech.whrsm.ac.cn/CN/Y2024/V43/IS2/3832

[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，2002：3-4.(XIA Caichu，SUN Zongqi. Engineering jointed rock mechanics[M]. Shanghai：Tongji University Press，2002：3-4.(in Chinese))
[2]	俞缙，赵晓豹，赵维炳，等. 改进的岩石节理弹性非线性法向变形本构模型研究[J]. 岩土工程学报，2008，30(9)：1 316-1 321.(YU Jin，ZHAO Xiaobao，ZHAO Weibing，et al. Improved nonlinear elastic constitutive model for normal deformation of rock fractures[J]. Chinese Journal of Geotechnical Engineering，2008，30(9)：1 316- 1 321.(in Chinese))
[3]	RONG G，HUANG K，ZHOU C B，et al. A new constitutive law for the nonlinear normal deformation of rock joints under normal load[J]. Science China：Technological Sciences，2012，55(2)：555-567.
[4]	GOODMAN R E. Methods of geological engineering in discontinuous rocks[M]. New York：West Publishing Company，1976：170-171.
[5]	KULHAWY F H. Stress deformation properties of rock and rock discontinuities[J]. Engineering Geology，1975，9(4)：327-350.
[6]	BANDIS S C，LUMSDEN A C，BARTON N. Fundamentals of rock joint deformation[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1983，20(6)：249-268.
[7]	BARTON N，BANDIS S，BAKHTAR K. Strength，deformation and conductivity coupling of rock joints[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1985，22(3)：121-140.
[8]	MALAMA B，KULATILAKE P H S W. Models for normal fracture deformation under compressive loading[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(6)：893-901.
[9]	GREENWOOD J. Contact of nominally flat surfaces[J]. Proceedings of the Royal Society of London Series A：Mathematical and Physical Sciences，1966，295：300-319.
[10]	GREENWOOD J，TRIPP J. The Contact of two nominally flat rough surfaces[J]. Proceedings of the Institution of Mathematical and Physical Sciences，1970，69(2)：625-634.
[11]	SWAN G. Determination of stiffness and other joint properties from roughness measurements[J]. Rock Mechanics and Rock Engineering，1983，16(1)：19-38.
[12]	BROWN S R，SCHOLZ C H. Closure of rock joints[J]. Journal of Geophysical Research：Solid Earth，1986，91(B5)：4 939-4 948.
[13]	TANG Z C，JIAO Y Y，WONG L N Y. Theoretical model with multi-asperity interaction for the closure behavior of rock joint[J]. International Journal of Rock Mechanics and Mining Sciences，2017，97：15-23.
[14]	TANG Z C，ZHANG Q Z. Elliptical Hertz-Based general closure model for rock joints[J]. Rock Mechanics and Rock Engineering，2021，54：477-486.
[15]	LUO Z Y，ZHENG W，DU S G，et al. Experimental study on normal deformation characteristics of filled rock joints with typical fluctuation morphology[J]. Frontiers in Earth Science，2022，10：1-12.
[16]	BARTON N，CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics and Rock Engineering，1977，10(1/2)：1-54.
[17]	LADANYI B，ARCHAMBAULT G. Shear strength and deformability of filled indented joints[C]// Proceedings of International Symposium on Geotechnics of Structurally Complex Formations. Capri，Italy：[s. n.]，1977：317-326.
[18]	International Society for Rock Mechanics Commission on Standardization of Laboratory and Field Tests. Suggested methods for the quantitative description of discontinuities in rock masses[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1978，15(6)：319-368.
[19]	肖维民，余欢，李锐，等. 薄层充填岩石节理抗剪强度特性试验研究[J]. 岩石力学与工程学报，2019，38(增2)：3 420-3 428. (XIAO Weimin，YU Huan，LI Rui，et al. Experimental research on the shear strength of thinly-infilled rock joints during shearing[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.2)： 3 420-3 428.(in Chinese))