构造裂面圆分析岩质边坡稳定性的方法
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摘要
运用绘图的方法将边坡岩体中结构面与临空面绘制成构造裂面圆,以分析边坡的稳定性及其变形性质和机理。圆的半径指向表示结构面走向之一,半径上符号方向表示倾向,临空面按其方位、走向绘制于圆外。结构面按其成因和性质分为层面、片理面、裂面、断层四类,并以不同的符号表示。结构面与临空面交角分为小角度相交、大角度相交、反倾三种组合关系。总之,构造裂面圆就是将结构面与临空面的空间关系平面化,通过分析两者的组合关系,分析边坡的稳定性、变形性质和机理。
In order to analyze the stability of slope, the deformation properties and mechanism, the structural fracture plane and free face in rock mass are plotted into a circle of structural fracture surface by drawing method. The radius direction of the circle indicates one of the directions of the structural plane, and the sign direction on the radius indicates the tendency. The free plane is drawn out of the circle according to its orientation and direction. Structural planes can be divided into four categories according to their formation and properties, i.e. bedding, sheets, fissures and faults, which are represented by different symbols. The intersection angle between structural plane and free face can be classified into three combinations including small angle, large angle and reverse-dumping. In short, the spatial relationship between the structural plane and the free face convert to planar relationship with structural fracture circle method. The stability, deformation properties and mechanism of the slope is analyzed by analyzing the combination relationship between the structural fracture plane and the free face.
In order to analyze the stability of slope, the deformation properties and mechanism, the structural fracture plane and free face in rock mass are plotted into a circle of structural fracture surface by drawing method. The radius direction of the circle indicates one of the directions of the structural plane, and the sign direction on the radius indicates the tendency. The free plane is drawn out of the circle according to its orientation and direction. Structural planes can be divided into four categories according to their formation and properties, i.e. bedding, sheets, fissures and faults, which are represented by different symbols. The intersection angle between structural plane and free face can be classified into three combinations including small angle, large angle and reverse-dumping. In short, the spatial relationship between the structural plane and the free face convert to planar relationship with structural fracture circle method. The stability, deformation properties and mechanism of the slope is analyzed by analyzing the combination relationship between the structural fracture plane and the free face.
引文
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[3] 陈祖煜.岩质边坡稳定分析——原理、方法、程序[M].北京:中国水利水电出版社,2005.Chen Zuyu.Stability analysis of rock slope:Principle,method and procedure[M].Beijing:Publishing House of China Water Resources and Hydropower,2005.(in Chinese)
[4] 李馨馨,徐青等.节理岩质边坡稳定性及其工程应用[J].武汉大学学报(工学版),2014,47(2):171～176.Li Xinxin,Xu Qing et al.Stability analysis of jointed rock slope and its engineering applications[J].Engineering Journal of Wuhan University(Engineering Edition),2014,47(2):171～176.(in Chinese)
[5] 李宁,钱七虎.岩质高边坡稳定性分析与评价中的四个准则[J].岩石力学与工程学报,2010,29(9):1754～1759.Li Ning,Qian Qihu.Four criteria of stability analysis and assessment of high rock slope[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(9):1754～1759.(in Chinese)
[6] 工程地质手册编写委员会,工程地质手册(第三版)[M].北京:中国建筑工业出版社,1992.Committee for the Compilation of Engineering Geological Manual.Engineering geological manual (the Third Edition) [M].Beijing:China Architecture & Building Press,1992.(in Chinese)
[7] 中华人民共和国国家标准.岩土工程勘察规范(GB 50021-2001) [S].北京:中国建筑工业出版社,2009.The State Standards of the People’s Republic of China.Code for investigation of geotechnical engineering[S].Beijing:China Architecture & Building Press,2009.(in Chinese)
[8] 王恭先,徐峻龄等.滑坡学与滑坡防治技术[M].北京:中国铁道出版社,2004.Wang Gongxian,Xu junling et al.Landslide science and landslide control technology[M].Beijing:Publishing House of China Railway,2004.(in Chinese)
[9] 高明等.实体比例投影结合赤平极射投影在岩质边坡稳定性分析中的应用[J].工程勘察,2014,42(5):30～34.Gao Ming et al.Application of stereographic projection and solid scale projection in the stability analysis of rock slope[J].Geotechnical Investigation & Surveying,2014,42(5):30～34.(in Chinese)
[10] 中华人民共和国国家标准.建筑边坡工程技术规范(GB 50330-2013) [S].北京:中国建筑工业出版社,2013.The State Standards of the People’s Republic of China.Technical code for building slope eengineering[S].Beijing:China Architecture & Building Press,2013.(in Chinese)
[11] 肖慧等.层状岩质边坡开挖过程相似模型试验[J].工程勘察,2014,42(6):29～33.Xiao Hui et al.Similarity model experiment of excavation in bedding rock slope [J].Geotechnical Investigation & Surveying,2014,42(6):29～33.(in Chinese)