倾斜面上岩体结构面加权节理密度(wJd)的获取

doi:10.13722/j.cnki.jrme.2015.0925

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摘要考虑结构面与观测面间夹角大小修正的岩体wJd指标，理论上能更为合理地评价岩体结构特征；其操作的关键和难点(尤其是在倾斜斜面上)，在于两面夹角的确定。基于wJd原始定义，根据结构面迹线侧伏特征，采用其侧伏角、倾角、及其与测面的倾向夹角等实测要素，导出倾斜斜面上wJd指标的等价形式，并探讨各要素所引起的修正精度的误差分析和控制。以此为基础，通过对3个实例的岩体结构精细测量数据挖掘，初步尝试整网法、叠网法、细单元法等取样方式的wJd值求解。与Jv值(条数法)统计类似，其结果以1 m × 1 m细单元的方式平均取值最理想，可缓减迹长差异所引起的分歧。研究表明，倾斜斜面上wJd指标的等价定义严格、数据基础详实，统计结果可靠，为一般方位观测(坡)面上的wJd取值提供了一项理论支撑和推广空间。

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	刘明1
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	林锋1

关键词 ：岩石力学, 加权节理化密度(wJd), 结构面, 开挖面, 侧伏规律

Abstract：The weighted joint density(wJd) method was revisited and modified by considering the angle between the structural plane and the observation surface，which offered better information for characterizing the degree of joints in the rock mass. The accuracy of the method relies on the measurement of the angle between each joint and the observation surface，and in particular，for the inclined surfaces. A modified wJd method was derived for the inclined surfaces based on the original form of wJd method calculated from the geometrical relationship between the angels of pitch/dip and strike. The accuracy of the modified method was validated in practice and discussed in the paper. Validation was performed in light of the dataset obtained from three case studies to calculate and compare the values of wJd with different sampling methods，including the global grid method，the overlying gird method，and the elementary unit method. The results were compared with the corresponding values obtained using the volumetric joint count(Jv) method，and the elementary unit method(1 m×1 m) yielded the most optimal outcome and reduced the bias induced by the offset of traces. The results demonstrate that the modified wJd method provides a novel and reliable means of evaluating rock mass quality for inclined surfaces.

Key words： rock mechanics weighted joint density(wJd) discontinuities excavation surface pitch law

引用本文:

刘明1，2，黄润秋1，严明1，林锋1. 倾斜面上岩体结构面加权节理密度(wJd)的获取[J]. 岩石力学与工程学报, 2016, 35(10): 1975-1989.
LIU Ming1，2，HUANG Runqiu1，YAN Ming1，LIN Feng1. Determination of weighted joint density(wJd) from inclined surface observations in rock masses. , 2016, 35(10): 1975-1989.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.0925 或 http://www.rockmech.org/CN/Y2016/V35/I10/1975

[15]	RAGAN D M. Structural geology：an introduction to geometrical techniques[M]. 4th ed. Cambridge：Cambridge University Press，2009：106. " target="_blank">
[18]	WOODCOCK N H. The accuracy of structural field measurements[J]. The Journal of Geology，1976，84(3)：350-355. " target="_blank">
[20]	SUPPE J. Principles of Structural geology[M]. Englewood Cliffs，NewJersey：Prentice-Hall，Inc.，1985：40. " target="_blank">
[1]	DEER D U. Technical description of rock cores for engineering purposes[J]. Felsmchanik und Ingenieurgeologie，1963，1(1)：16-22. " target="_blank">
[3]	黄润秋，陈剑平，胡卸文，等. 复杂岩体结构精细描述及其工程应用[M]. 北京：科学出版社，2004：209-216.(HUANG Runqiu，CHEN Jianping，HU Xiewen，et al. Accurate descript of complex rock mass structure and engineering applications[M]. Beiing：Science Press，2004：209-216.(in Chinese)) " target="_blank">
[5]	PALMSTROM A. Characterizing rock masses by the RMI for use in practical rock engineering part 1：the development of the rock mass index(RMI)[J]. Tunnelling and Underground Space Technology，1996，11(2)：175-188. " target="_blank">
[10]	SONMEZ H，NEFESLIOGLU H A，GOKCEOGLU C. Determination of wJd on rock exposures including wide spaced joints[J]. Rock Mechanics and Rock Engineering，2004，37(5)：403-413.
[12]	ELCI H，TURK N. Rock mass block quality designation for marble production[J]. International Journal of Rock Mechanics and Mining Sciences，2014，69(1)：26-30. " target="_blank">
[16]	刘明，黄润秋，严明，等. 侧伏规律在岩质边坡结构面编录中的应用[J]. 工程地质学报，2011，19(1)：11-20.(LIU Ming，HUANG Runqiu，YAN Ming，et al. Application of pitch rules of discontinuities to excavation surface for rock slope structure mapping[J]. Journal of Engineering Geology，2011，19(1)：11-20.(in Chinese))
[19]	CRUDEN D M，CHARLESWORTH H A K. Errors in strike and dip measurements[J]. Geological Society of American Bulletin，1976，87(7)：977-980. " target="_blank">
[21]	郑俊，邓建辉，魏进兵. 不连续面产状Fisher分布拟合度检验方法的改进[J]. 岩石力学与工程学报，2015，34(8)：1 561-1 568. (ZHENG Jun，DENG Jianhui，WEI Jinbing. An improved method of goodness-of-fit test for fisher distribution to discontinuity orientations[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(8)： 1 561-1 568.(in Chinese))
[23]	张琦. 广义三维Hoek-Brown岩体强度准则的修正及其参数多尺度研究[J]. 岩石力学与工程学报，2015，34(3)：647.(ZHANG Qi. A modification ofgeneralized 3D Hoek-Brown rock masses strength criterion and its parameters multi-scale studies[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(3)：647.(in Chinese))
[25]	周创兵，陈益峰，姜清辉. 岩体表征单元体与岩体力学参数[J]. 岩土工程学报，2007，29(8)：1 135-1 142.(ZHOU Chuangbing，CHEN Yifeng，JIANG Qinghui. Representative elementary volume and mechanical parameters of fractured rock masses[J]. Chinese Journal of Geotechnical Engineering，2007，29(8)：1 135-1 142.(in Chinese))
[8]	SHARMA V M，SAXENA K R. In-situ characterization of rocks[M]. Tokyo：A. A. Balkema Publishers，2002：49-98. " target="_blank">
[6]	林锋，黄润秋，王胜，等. 岩体体积节理数(Jv)的现场测量方法评价[J]. 工程地质学报，2008，16(5)：663-666.(LIN Feng，HUANG Runqiu，WANG Sheng，et al. Evaluation of in-situ measurement methods for counting volumetric joints of rock mass[J]. Journal of Engineering Geology，2008，16(5)：663-666.(in Chinese))
[11]	NEFESLIOGLU H A，GOKCEOGLU C，SONMEZ H. Indirect determination of weighted joint density(wJd) by empirical and fuzzy models：Supren(Eskisehir，Turkey) marbles[J]. Engineering Geology，2006，85(3/4)：251-269. " target="_blank">
[22]	BECKWITH R H. Fault problems in fault planes[J]. Bulletin of the Geological Society of America，1947，58(1)：79-108. " target="_blank">
[14]	TERZAGHI R D. Sources of error in joint surveys[J]. Geotechnique，1965，15(2)：287-304. " target="_blank">
[2]	张倬元，王士天，王兰生. 工程地质分析原理[M]. 北京：地质出版社，1994：8-11.(ZHANG Zhuoyuan，WANG Shitian，WANG Lansheng. Analyzing principle of engineering geology[M]. Beijing：Geological Publishing House，1994：8-11.(in Chinese)) " target="_blank">
[4]	PALMSTROM A. The volumetric joint count—a useful and simple measure of the degree of jointing[C]// Proceedings of the 4th International Congress IAEG. New Delhi，India：[s. n.]，1982：221-228. " target="_blank">
[9]	PALMSTROM A. Measurements of and correlations between block size and rock quality designation(RQD)[J]. Tunnelling and Underground Space Technology，2005，20(4)：362-377. " target="_blank">
[13]	于国新，白明洲，许兆义. 铁路隧道围岩分级的知识挖掘[J]. 铁道学报，2007，29(4)：125-130.(YU Guoxin，BAI Mingzhou，XU Zhaoyi. Knowledge mining of classification of railway tunnel surrounding rock[J]. Journal of the China Railway Society，2007，29(4)：125-130.(in Chinese))
[24]	宁宇，徐卫亚，郑文棠，等. 柱状节理岩体随机模拟及其表征单元体尺度研究[J]. 岩石力学与工程学报，2008，27(6)：1 202-1 208. (NING Yu，XU Weiya，ZHENG Wentang，et al. Study of random simulation of columnar jointed rock mass and its representative elementary volume scale[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(6)：1 202-1 208.(in Chinese))
[26]	冯增朝，赵阳升. 岩体裂隙尺度对其变形与破坏的控制作用[J]. 岩石力学与工程学报，2008，27(1)：78-83.(FENG Zengchao，ZHAO Yangsheng. Control effect of fissure scale on deformation andfailure of rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：78-83.(in Chinese))
[7]	HOEK E，CARRANZA-TORRES C T，CORKUM B. Hoek-Brown failure criterion—2002 edition[C]// HAMMAH R，BAWDEN W，CURRAN J，et al ed. Proceedings of the Fifth North American Rock Mechanics Symposium(NARMS-TAC). Toronto：University of Toronto Press，2002：267-273. " target="_blank">
[17]	刘明，黄润秋. 确定岩质坡面上结构面迹线侧伏特征的算图[J]. 岩石力学与工程学报，2011，30(增1)：2 624-2 633.(LIU Ming，HUANG Runqiu. Nomograph for determination of pitch property of discontinuity trace on rock excavated surface[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：2 624-2 633.(in Chinese))