NUMERICAL SIMULATION OF IN-SITU STRESS FIELD IN THE AREA OF DEEP-BURIED AND LONGER TUNNEL IN NORTH TANSHAN, XINJIANG
-
摘要: 采用隧道工程区应力实测数据、北天山地区现代震源机制解、区域地质构造资料以及岩体物理力学参数作为物理模型边界条件和载荷,对北天山隧道工程区进行三维应力场数值模拟,获得了整个工程区特别是隧道工程重要部位岩体应力分布规律,并依据隧道区应力场模拟结果,结合地质资料进行了隧道工程稳定性分析。Abstract: In this paper, the measured in-situ stress data of the tunnel area, modern focal mechanism solutions of the North Tianshan region, regional geological structural data, as well as physical and mechanical parameters of rock mass were used as boundary and load conditions of the geological model. The three-dimensional numerical simulation was completed on stress field of the north Tianshan tunnel project area. And the rock mass stress distribution law in the whole project area, particular some important parts, was obtained. Stress data was provided for the tunnel project design. Based on the simulation results of the tunnel area stress field, the tunnel stability is analyzed.
-
Key words:
- North Tianshan Tunnel /
- stress field /
- finite element method /
- numerical simulation /
- tunnel stability
-
表 1 JYZ-2#、JYZ-7#、JYZ-8#钻孔内隧道穿过部位原地应力测量结果
Table 1. In-situ stress in the tunnel parts of JYZ-2#、JYZ-7# and JYZ-8# drill holes
表 2 岩石力学参数
Table 2. Parameters of rock mechanics
表 3 最大与最小主应力模拟值与实测值对比
Table 3. Comparison of simulated and measured values of maximum and minimum principal stresses
-
[1] 蔡美峰.地应力测量原理和技术[M].北京:科学出版社, 2000.CAI Mei-feng. Principle and techniques of in-situ stress measurement[M]. Beijing:Science Press, 2000. [2] 蔡美峰.地应力测量原理和方法的评述[J].岩石力学与工程学报, 1993, 12(3):275~283. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX199303009.htmCAI Mei-feng. Commentary of principle and techniques of rock stress measurement[J]. Chinese Journal of Rock Mechanics and Engineering, 1993, 12(3):275~283. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX199303009.htm [3] Hayashi K, Sato A, Ito T. In-situ stress measurements by hydraulic fracturing for a rock mass with many planes of weakness[J]. International Journal of Rock Mechanics and Mining Sciences, 1997, 34(1):45~48. doi: 10.1016/S1365-1609(97)80032-9 [4] ISRM. Suggested methods for rock stress determination[J]. International Journal of Rock Mechanics and Mining Sciences, 1987, 24(1):55~73. doi: 10.1016/0148-9062(87)91232-0 [5] 蔡美峰. 地应力及原位地应力测量[C]//王思敬. 中国岩石力学与工程世纪成就. 南京: 河海大学出版社, 2004: 485~515.CAI Mei-feng. Rock stress and its in-situ measurement[C]//WANG Si-jing. Century achievements of rock mechanics and engineering in China[M]. Nanjing:Hohai University Press, 2004:485~515. [6] 蔡美峰.金属矿山采矿设计优化与地压控制——理论与实践[M].北京:科学出版社, 2001.CAI Mei-feng. Optimization of mining design and control of ground pressure in metal mines:Theory and practice[M]. Beijing:Science Press, 2001. [7] 彭华, 马秀敏.南水北调西线工程区地震危险性分析及预测[J].地质力学学报, 2007, 13(1):15~24. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20070103&flag=1PENG Hua, MA Xiu-min. Risk analysis and prediction of earthquakes in the construction area of the west line of the south to north water diversion project[J]. Journal of Geomechanics, 2007, 13(1):15~24. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20070103&flag=1 [8] 刘允芳.水压致裂三维应力测量[J].岩石力学与工程学报, 1991, 10(3):246~256. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB200405009.htmLIU Yun-fang. 3D in-situ stress measurement by hydraulic fracturing technique[J]. Chinese Journal of Rock Mechanics and Engineering, 1991, 10(3):246~256. http://www.cnki.com.cn/Article/CJFDTOTAL-SFXB200405009.htm [9] 马秀敏, 彭华, 李金锁.新疆西部地应力测量在隧道工程中的应用[J].地质力学学报, 2005, 11(4):386~393. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20050455&flag=1MA Xiu-min, PENG Hua, LI Jin-suo. Application of hydraulic fracturing in-situ stress measurements in tunneling in western Xinjiang[J]. Journal of Geomechanics, 2005, 11(4):386~393. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20050455&flag=1 [10] 李金锁, 彭华, 崔巍.云南西北部铁路隧道地应力测试及工程应用[J].地质力学学报, 2005, 11(2):135~144. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20050219&flag=1LI Jin-suo, PENG Hua, CUI Wei. In-situ stress measurement and its engineering application to railway tunnels in northwest of Yunnan Province[J]. Journal of Geomechanics, 2005, 11(2):135~144. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20050219&flag=1 [11] 马秀敏, 彭华, 李金锁, 等.襄渝铁路增建二线——新白岩寨隧道地应力测量及其在岩爆分析中的应用[J].地球学报, 2006, 27(2):181~186. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB200602016.htmMA Xiu-min, PENG Hua, LI Jin-suo, et al. In-situ stress measurement and its application to rock burst analysis in Xinbaiyanzhai tunnel of the Xiangyu Railway[J]. Acta Geoscientica Sinica, 2006, 27(2):181~186. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB200602016.htm [12] 蔡美峰, 陈长臻, 彭华, 等.万福煤矿深部水压致裂法地应力测量[J].岩石力学与工程学报, 2006, 25(3):1069~1074. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200605036.htmCAI Mei-feng, CHEN Chang-zhen, PENG Hua, et al. In-situ stress measurement by hydraulic fracturing technique in deep position of Wanfu Coal Mine[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(3):1069~1074. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200605036.htm [13] 李金锁, 彭华, 马秀敏, 等.大丽线铁路隧道工程地应力三维有限元数值模拟分析[J].岩土工程学报, 2006, 28(6):800~803. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200606025.htmLI Jin-suo, PENG Hua, MA Xiu-min, et al. Three-dimensional finite element numerical simulation of geo-stress in Da-Li Railway tunnel of Yunnan[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(6):800~803. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200606025.htm [14] 王薇, 王连捷, 乔子江, 等.三维地应力场的有限元模拟及其在隧道设计中的应用[J].地球学报, 2004, 25(5):587~591. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB200405018.htmWANG Wei, WANG Lian-jie, QIAO Zi-jiang, et al. Modeling of three dimensional crustal stress field and its application in tunnel design[J]. Acta Geoscientica Sinica, 2004, 25(5):587~591. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB200405018.htm [15] 王连捷. 叠加法反演山西某铜矿现今地应力场[C]//中国岩石力学与工程学会. 岩土力学数值方法的工程应用——第二届全国岩石力学数值计算与模型实验学术研讨会论文集. 上海: 同济大学出版社, 1991.WANG Lian-jie. Inversion of present geo-stress field by finite element method in a mine in Shanxi Province[C]//Chinese Society for Rock Mechanics and Engineering. Application of numerical analysis of rock and soil mechanics in engineering. Shanghai:Shanghai Tongji University Press, 1991. [16] 于学馥, 郑颖人, 刘怀恒, 等.地下工程围岩稳定分析[M].北京:煤炭工业出版社, 1983.YU Xue-fu, ZHENG Ying-ren, LIU Huai-heng, et al. Stability analysis of surrounding rock in underground engineering[J]. Beijing:Coal Industry Publishing House, 1983. [17] 李永松, 尹健民, 刘元坤, 等.阳江抽水蓄能电站地应力场回归分析[J].武汉大学学报(工学版), 2007, 40(4):69~73. http://www.cnki.com.cn/Article/CJFDTOTAL-WSDD200704016.htmLI Yong-song, YIN Jian-min, LIU Yuan-kun, et al. Regression analysis of in-situ stress field for Yangjiang Pumped Storage Plant[J]. Engineering Journal of Wuhan University, 2007, 40(4):69~73. http://www.cnki.com.cn/Article/CJFDTOTAL-WSDD200704016.htm