Seismic Dynamic Characteristic of Hydraulic Tunnel in Jointed Rock Based on UDEC

BAO Lei; CHEN Chun-wu; PAN Kun; LUO Xiao-qin; ZHANG Jin; LEI Jin-sheng

doi:10.11988/ckyyb.20140314

PDF(1942 KB)

Journal of Changjiang River Scientific Research Institute ›› 2015, Vol. 32 ›› Issue (10) : 78-84. DOI: 10.11988/ckyyb.20140314

ROCK-SOIL ENGINEERING

Seismic Dynamic Characteristic of Hydraulic Tunnel in Jointed Rock Based on UDEC

BAO Lei¹,CHEN Chun-wu¹,PAN Kun¹,LUO Xiao-qin¹,ZHANG Jin¹,LEI Jin-sheng²

Author information +

History +

Abstract

A model of analyzing the mechanics of hydraulic tunnel with gently dipped layered jointed rock with long span and high sidewall was established using UDEC based on the non-continum theory. The wave velocity characters, displacement distribution, stress distribution and plastic zone distribution, as well as the stability of surrounding rock at different positions of the tunnel under seismic action were analyzed. The response of surrounding rock during earthquake action was acquired. Results revealed that under sine shear seismic wave in vertical direction, the dynamic characteristic of monitoring points in vertical direction were more apparent than that in horizontal direction; in the initial stage of seismic wave action, the displacement of sidewall was larger than that of the roof, and the displacement of bottom surrounding rock was largely affected by seismic action as time went by; after the seismic action, the stress of monitoring points all increased slightly; and plastic zone in the tunnel’s sidewall and the bottom surrounding rock enlarged obviously. The results provide references for further analysis on the deformation and failure mechanism of surrounding rock under seismic load.

Key words

jointed rock / hydraulic tunnel / universal distinct element code / seismic load / dynamic characteristic

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

BAO Lei ,CHEN Chun-wu ,PAN Kun ,LUO Xiao-qin ,ZHANG Jin ,LEI Jin-sheng. Seismic Dynamic Characteristic of Hydraulic Tunnel in Jointed Rock Based on UDEC[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(10): 78-84 https://doi.org/10.11988/ckyyb.20140314

References

[1] GOODMAN R E. Methods of Geological Engineering in Discontinuous Rocks[J]. West Publishing, 1976,8(2): 135-140.
[2] 套炼金,常春.节理岩体的动力响应分析及工程应用[J]. 黑龙江矿业学院学报, 2000,10(4):6-10. (TAO Lian-jin, CHANG Chun. Dynamic Response Analysis of Jointed Rock Mass and Its Application in Engineering[J]. Journal of Heilongjiang Mining Institute, 2000, 10(4): 6-10. (in Chinese))
[3] 陶连金,张悼元,王泳嘉. 复杂工程岩休稳定性评价的方法与实践[M]. 成都:成都科技大学出版社,1998. (TAO Long-jin, ZHANG Dao-yuan, WANG Yong-jia. Stability Evaluation for Complex Engineering Rockmass: Methods and Practice[M]. Chengdu: Chengdu University of Science and Technology Press, 1988. (in Chinese))
[4] Itasca Consulting Group. UDEC (Universal Distinct Element Code) User’s Manual (Version 3.0)[M]. USA: Itasca Consulting Group, Inc., 1996.
[5] 王泳嘉,邢纪波. 离散元法及其在岩土力学中的应用[M]. 沈阳:东北工学院出版社, 1991. (WANG Yong-jia, XING Ji-bo. The Discrete Element Method and Its Application in Rock and Soil Mechanics[M]. Shenyang: Northeast Institute of Technology Press, 1991. (in Chinese))
[6] 王涛,熊将,郭武祥,等. 地震荷载作用下地下厂房围岩稳定的离散元计算方法研究[J]. raybet体育在线院报, 2009,26(12):58-61. (WANG Tao, XIONG Jiang, GUO Wu-xiang, et al. Research on Stability of Rock Mass around Underground Powerhouse Cavern by Discrete Element Method under Earthquake[J]. Journal of Yangtze River Scientific Research Institute, 2009, 26(12): 58-61.(in Chinese))
[7] 王鲁明,赵坚,华安增,等. 节理岩体中应力波传播规律研究的进展[J]. 岩土力学,2003,24(增):602-610. (WANG Lu-ming, ZHAO Jian, HUA An-zeng, et al. The Progress in Study of Regularity of a Stress Wave Propagation in the Jointed Rock Mass[J]. Rock and Soil Mechanics, 2003, 24(Sup.): 602-610. (in Chinese))
[8] 陶连金,张悼元,傅小敏.在地震载荷作用下的节理岩体地下洞室围岩稳定性分析[J]. 中国地质灾害与防治学报,1998,9(2):33-42. (TAO Lian-jin, ZHANG Zhuo-yuan, FU Xiao-min. Stability Analysis of Surrounding Rockmass of Underground Excavation Rock Mass Under Seismic Load[J]. The Chinese Journal of Geological Hazard and Control, 1988, 9(2): 33-42. (in Chinese))
[9] 郑颖人,肖强,叶海林,等.地震隧洞稳定性分析探讨[J]. 岩石力学与工程学报,2010,29(6):1081-1088. (ZHENG Ying-ren, XIAO Qiang, YE Hai-lin, et al. Study of Tunnel Stability Analysis with Seismic Load[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(6): 1081-1088. (in Chinese))
[10]王涛,陈晓玲,于利宏. 地下洞室群围岩稳定的离散元计算[J]. 岩土力学,2005,26(12):1936-1940. (WANG Tao, CHEN Xiao-ling, YU Li-hong. Discrete Element Calculation of Surrounding Rock Mass Stability of Underground Cavern Group[J]. Rock and Soil Mechanics, 2005, 26(12): 1936-1940. (in Chinese))
[11]夏祥,李俊如,李海波,等. 爆破荷载作用下岩体振动特征的数值模拟[J]. 岩土力学,2005,25(1):50-56. (XIA Xiang, LI Jun-ru, LI Hai-bo,et al. UDEC Modeling of Vibration Characteristics of Jointed Rock Mass Under Explosion[J]. Rock and Soil Mechanics, 2005, 25(1): 50-56. (in Chinese))
[12]赵坚,陈寿根,蔡军刚,等. 用UDEC模拟爆炸波在节理岩体中的传播[J]. 中国矿业大学学报,2002,31(2):111-115. (ZHAO Jian, CHEN Shou-gen, CAI Jun-gang, et al. Simulation of Blast Wave Propagation in Joined Rock Mass Using UDEC[J]. Rock and Soil Mechanics, 2002, 31(2): 111-115. (in Chinese))