|
|
|
| Hydraulic fracturing characteristics of water resisting rock mass with layered joints based on CDEM |
| HOU Fujin1, ZHANG Li2*, JIANG Qing1, FENG Chun2, LI Shihai2
|
1. Shandong Hi-speed Construction Management Group Co., Ltd., Jinan 250014, Shandong, China;
2. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China |
|
|
|
|
Abstract In order to study the hydraulic fracturing characteristics of water resisting rock mass with layered joints in karst tunnels, an analysis model of water resisting rock mass was established, the key factors affecting the critical hydraulic pressure of rock column was obtained through dimensional analysis, and the rock strength properties of single joint element was analyzed. With the help of continuum-discontinuum element method to observe the fracture crack and penetration process,the failure mode and critical water pressure of the water resisting rock mass with different joint inclination angles were obtained, as well as the evolution law of the rock mass fracture degree and damage degree. The numerical results showed that the failure modes of water resisting rock mass with layered jointed included bedrock failure, interlayer failure and composite failure; influenced by the weight of overlying strata, the critical water pressure of water resisting rock column had an obvious obliquity effect, which first decreased and then increased; the fracture degree and damage degree of interlayer penetrating failure were much less than that of bedrock penetrating failure.
|
|
Received: 09 April 2021
Published: 20 September 2021
|
|
|
|
|
| [1] |
YANG Zihan, ZHANG Jiahua. Minimum safe thickness of rock plug in Karst tunnel according to upper bound theorem[J]. Journal of Central South University, 2016, 23: 2346-2353.
|
| [2] |
李术才,王康,李利平,等. 岩溶隧道突水灾害形成机理及发展趋势[J].力学学报,2017,9(1):22-30. LI Shucai, WANG Kang, LI Liping, et al. Mechanical mechanism and development trend of water-inrush disasters in Karst tunnels[J]. Chinese Journal of Theoretical and Applied Mechanics, 2017, 9(1):22-30.
|
| [3] |
曹洁,左宇军,李伟,等.充水溶洞对隧道围岩稳定性影响的数值模拟[J]. 工业安全与环保,2016,42(11):5-7. CAO Jie, ZUO Yujun, LI Wei, et al. Numerical simulation on the influences of water filling cave on the stability of tunnel surrounding rock[J]. Industrial Safety and Environmental Protection, 2016, 42(11):5-7.
|
| [4] |
田兴朝,刘远明,马智理,等.基于颗粒流数值模拟的层状节理对隧道围岩变形影响分析[J].煤矿安全,2019,50(10):235-238. TIAN Xingchao, LIU Yuanming, MA Zhili, et al. Influence of layered joints on deformation of tunnel surrounding rock based on particle flow numerical simulation[J].Safety in Coal Mines, 2019, 50(10):235-238.
|
| [5] |
周宗青,李利平,石少帅,等.隧道突涌水机制与渗透破坏灾变过程模拟研究[J].岩土力学,2020,41(11):3621-3631. ZHOU Zongqing, LI Liping, SHI Shaoshuai, et al. Study on tunnel water inrush mechanism and simulation of seepage failure process[J]. Rock and Soil Mechanics, 2020, 41(11):3621-3631.
|
| [6] |
孙谋,刘维宁.高风险岩溶隧道掌子面突水机制研究[J].岩土力学,2011,32(4):1175-1180. SUN Mou, LIU Weining. Research on water inrush mechanism induced by Karst tunnel face with high risk[J].Rock and Soil Mechanics, 2011, 32(4):1175-1180.
|
| [7] |
BAI Haibo, MA Dan, CHEN Zhanqing. Mechanical behavior of groundwater seepage in Karst collapse pillars[J]. Engineering Geology, 2013, 164:101-106.
|
| [8] |
李利平,李术才,张庆松. 岩溶地区隧道裂隙水突出力学机制研究[J].岩土力学,2010,31(2): 523-528. LI Liping, LI Shucai, ZHANG Qingsong. Study of mechanism of water inrush induced by hydraulic fracturing in Karst tunnels[J]. Rock and Soil Mechanics, 2010, 31(2): 523-528.
|
| [9] |
刘招伟,何满潮,王树仁.圆梁山隧道岩溶突水机理及防治对策研究[J].岩土力学,2006,27(2):228-232. LIU Zhaowei, HE Manchao, WANG Shuren. Study on Karst water burst mechanism and prevention counter measures in Yuanliangshan Tunnel[J]. Rock and Soil Mechanics, 2006, 27(2):228-232.
|
| [10] |
张玉军,刘谊平.层状岩体抗剪强度的方向性及剪切破坏面的确定[J].岩土力学,2001(3):254-257. ZHANG Yujun, LIU Yiping. Anistropy of shear strength of layered rocks and determination of shear failure plane[J]. Rock and Mechanics, 2001(3):254-257.
|
| [11] |
黄书岭,徐劲松,丁秀丽,等.考虑结构面特性的层状岩体复合材料模型与应用研究[J].岩石力学与工程学报,2010,29(4):743-756. HUANG Shuling, XU Jinsong, DING Xiuli, et al. Study of layered rock mass composite model based on characteristics of structural plane and its application[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(4):743-756.
|
| [12] |
夏彬伟.深埋隧道层状岩体破坏失稳机理实验研究[D].重庆:重庆大学,2009. XIA Binwei. Experimental study on the mechanism of instability of layered rock mass in deep buried lunnel[D]. Chongqing:Chongqing University, 2009.
|
| [13] |
张学民.岩石材料各向异性特征及其对隧道围岩稳定性影响研究[D].长沙:中南大学,2007. ZHANG Xuemin. Anisotropic characteristic of rock material and its effect on stability of tunnel surrounding rock[D]. Changsha: Central South University, 2007.
|
| [14] |
冯春,李世海,姚再兴.基于连续介质力学的块体单元离散弹簧法研究[J].岩石力学与工程学报,2010,29(增刊1):2690-2704. FENG Chun, LI Shihai, YAO Zaixing. Study of block-discrete-spring method based on continuum mechanics[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(Suppl.1): 2690-2704.
|
| [15] |
王杰,李世海,周东,等.模拟岩石破裂过程的块体单元离散弹簧模型[J]. 岩土力学,2013,34(8): 2355-2362. WANG Jie, LI Shihai, ZHOU Dong, et al. A block-discrete-spring model to simulate failure process of rock[J]. Rock and Soil Mechanics, 2013, 34(8): 2355-2362.
|
| [16] |
贺振宇,郭佳奇,陈帆,等.隧道典型致灾构造及突水模式分析[J].中国地质灾害与防治学报,2017,28(2):97-107. HE Zhenyu, GUO Jiaqi, CHEN Fan, et al. Analysis of typical disaster-causing structure and water inrush model of tunnel[J]. Chinese Journal of Geological Hazard and Control, 2017, 28(2):97-107.
|
| [17] |
JAGER J C. Shear failure of anisotropic rocks[J]. Geology Magazine, 1960, 97(1):65-72.
|
| [18] |
JAGER J C. Friction of rocks and stability of rock slope[J]. Géotechnique, 1971, 21(2): 97-134.
|
| [19] |
黄书岭,丁秀丽,邬爱清,等.层状岩体多节理本构模型与试验验证[J].岩石力学与工程学报,2012,31(8):1627-1635. HUANG Shuling, DING Xiuli, WU Aiqing, et al.Study of multi-joint constitutive model of layered rockmass and experimental verification[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(8):1627-1635.
|
| [20] |
杨子汉,杨小礼,许敬叔,等.基于上限原理的两种岩溶隧道岩墙厚度计算方法[J].岩土力学,2017,38(3):801-809. YANG Zihan, YANG Xiaoli, XU Jingshu, et al. Two methods for rock wall thickness calculation in karst tunnels based on upper bound theorem[J].Rock and Soil Mechanics, 2017, 38(3):801-809.
|
|
|
|
