Numerical simulation of stress-structural rockburst based on GDEM software
MA Chunchi1,2, CHEN Kezhu3, LI Tianbin1,2*, ZENG Jun1,2, MA Jiaji1,2
1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 2. College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 3. Sichuan Communication Surveying Design Institute Co., Ltd., Chengdu 610017, Sichuan, China
Abstract: With the start of a series of major underground projects in western China, more and more rockburst disasters bring serious harm to the safety of construction personnel and machinery. However, rockburst has complex failure types and fracture surface characteristics in the specific geological structure. Therefore, a correct understanding of the characteristics of rockburst failure process has become an urgent problem to be solved. GDEM software was used to simulate and reproduce three typical stress-structure rockburst, and the rockburst gestation process, rockburst block movement characteristics and rockburst system energy characteristics were discussed. The study showed that there were great differences in the failure form and energy evolution of bending-bulging, cracking-sliping and splitting-dumping rockburst under different rock mass structures. In addition, the numerical simulation directly showed that the rock burst would not only produce block ejection phenomenon, but also lead to rock mass damage and fragmentation in a certain depth of the rockburst pit. The research results can provide some reference basis for the gestation mechanism of stress-structure rockburst, as well as the macroscopic understanding of rockburst failure phenomenon and the design of rockburst protection measures in construction.
马春驰, 陈柯竹, 李天斌, 曾俊, 马佳骥. 基于GDEM的应力-结构型岩爆数值模拟研究[J]. 隧道与地下工程灾害防治, 2020, 2(3): 85-94.
MA Chunchi, CHEN Kezhu, LI Tianbin, ZENG Jun, MA Jiaji. Numerical simulation of stress-structural rockburst based on GDEM software. Hazard Control in Tunnelling and Underground Engineering, 2020, 2(3): 85-94.
[1] 李天斌, 孟陆波, 王兰生. 高地应力隧道稳定性及岩爆、大变形灾害防治[M]. 北京: 科学出版社, 2016. [2] 田四明,赵勇,石少帅,等.中国铁路隧道建设期典型灾害防控方法现状、问题与对策[J].隧道与地下工程灾害防治,2019,1(2):24-48. TIAN Siming, ZHAO Yong, SHI Shaoshuai, et al. The status, problems and countermeasures of typical disaster prevention and control methods during the construction period of Chinese railway tunnels[J].Tunnel and Underground Engineering Disaster Prevention, 2019, 1(2):24-48. [3] LI T B, MA C C, ZHU M L, et al. Geomechanical types and mechanical analyses of rockbursts[J]. Engineering Geology, 2017, 222: 72-83. [4] 冯春,李世海,郝卫红.基于CDEM的钻地弹侵彻爆炸全过程数值模拟研究[J].振动与冲击,2017, 36(13): 11-18. FENG Chun, LI Shihai, HAO Weihong. Numerical simulation research on the whole process of penetration and explosion of earth penetrating projectile based on CDEM[J]. Journal of Vibration and Shock, 2017, 36(13): 11-18. [5] 陈锣增.易贡高速远程滑坡运动颗粒流数值分析[D].成都:西南交通大学,2016. CHEN Luozeng. Three-dimensional numericalsimulation ofyigong rock avalancheusing particle flow code[D].Chengdu: Southwest Jiaotong University, 2016. [6] 李玉成.裂隙岩体力学特性的三维颗粒流离散元分析[J].中国水运(下半月), 2019,19(4): 253-254. LI Yucheng.Three-dimensional particle flow discrete element analysis of mechanical properties of fractured rock mass[J]. China Water Transport(2nd Half of the Month), 2019, 19(4):253-254. [7] 王猛.边坡-隧道动力相互作用及影响因素分析[D].兰州: 兰州交通大学,2019. WANG Meng. Analysis of the slope-tunnel dynamic interaction and its influencing factors[D].Lanzhou: Lanzhou Jiaotong University, 2019. [8] 王源琳.基于长春市南部新城乙六路综合管廊工程的基坑施工技术研究[D].吉林:吉林大学,2018. WANG Yuanlin. Research on foundation pit construction technology of Yiliulu Utility Tunnel project in southern new town of Changchun[D]. Jilin:Jilin University, 2018. [9] 袁安营.采场围岩力链演化特征及其关键物理量研究[D].北京: 中国矿业大学(北京),2017. YUAN Anying. Research on force chain evolution characteristics of surrounding rock and it's key physical[D]. Beijing:China University of Mining & Technology, Beijing, 2017. [10] FENG C, LI S H, LIU X Y, et al. A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2014, 6(1): 26-35. [11] 于永军,朱万成,李连崇,等.深地层煤岩组合体水力压裂裂缝扩展模拟研究[J].隧道与地下工程灾害防治,2019,1(3):96-108. YU Yongjun, ZHU Wancheng, LI Lianchong, et al. Simulation study on hydraulic fracturing crack propagation in deep coal and rock combination[J]. Tunnel and Underground Engineering Disaster Prevention, 2019, 1(3):96-108. [12] 郭汝坤,冯春,李战军,等.岩体强度对牙轮单齿作用下破碎坑的体积及形态影响研究[J].岩土力学, 2016, 37(10): 2971-2978. GUO Rukun, FENG Chun, LI Zhanjun, et al. Influence of rock mass strength on volume and shape of fragmental pit generated by a single tooth of roller bit[J]. Rock and Soil Mechanics, 2016, 37(10): 2971-2978. [13] 冯春,李世海,周东,等.爆炸载荷作用下岩石损伤破裂过程的数值分析[J].岩土工程学报, 2014, 36(7): 1262-1270. FENG Chun, LI Shihai, ZHOU Dong, et al. Numerical analysis of damage and crack process of rock under explosive loading[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(7): 1262-1270. [14] 赵小平,左建平,裴建良.锦屏层状大理岩断裂机制的细观试验研究[J].岩石力学与工程学报,2012,31(3):534-542. ZHAO Xiaoping, ZUO Jianping, PEI Jianliang.Meso-experimental study on the fracture mechanism of Jinping layered marble[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(3):534-542. [15] 周辉,杨鑫,胡其志,等. 绿泥石片岩遇水软化的强度试验及机理研究[J].土工基础, 2011, 25(1): 45-48. ZHOU Hui, YANG Xin, HU Qi zhi, et al. Strength test and mechanism of softening of chlorite schist[J]. Soil Engineering and Foundation, 2011, 25(1): 45-48.
2020, Vol. 2 
