| Citation: |
HU Bin，CAO Jianjun，WANG Zeqi，et al. Shear creep test and creep damage model study of mud shale under impact disturbance[J]. Journal of China Coal Society，2024，49(S2)：900−910. DOI: 10.13225/j.cnki.jccs.2023.1018
|
The rock is in a creeping state for a long time under stress, and the impact disturbance effect generated during the mine blasting and mining process will accelerate the accumulation of rock damage, which seriously threatens the stability of the mine slope. Taking the shale in the soft interlayer of the slope of Huangshan limestone mine as the research object, the creep mechanical characteristics of the mud shale under the influence of impact disturbance were analyzed by carrying out shear creep tests under different impact energies and different impact times, and the secant modulus method was introduced to quantify the impact damage, and the evolution law of impact damage was analyzed. By introducing the Weibull distribution function to characterize the stress damage factor, and deriving the stress-impact coupling damage factor from the generalized damage theory, then introducing the impact damage degree and correction coefficient to improve the viscous element according to the change analysis of the viscosity coefficient, and finally substituting the coupled damage factor and impact damage improvement element into the Nishihara model, a new creep damage model is established. According to the experimental results, the differential evolution algorithm is used and the parameters of the model are identified by relying on the 1stopt global optimization software. Based on the above research, the following results are obtained: with the increase of impact energy and impact frequency, the long-term strength and total creep time of mud shale gradually decrease, the impact damage degree also increases, and its failure characteristics gradually change from brittle failure to typical plastic failure; under low shear stress level, the sensitivity of mud shale to impact disturbance is low, but with the increase of shear stress level, the sensitivity of shale to impact disturbance also increases, and the impact damage degree increases faster; the model fitting data matches the experimental data is high, and the creep damage model can better describe the creep characteristics of mud shale under impact disturbance. The research results can provide a theoretical basis for disaster prevention monitoring and stability analysis of mine slopes.
| [1] |
王波,高昌炎,陈学习,等. 岩石流变扰动特性单轴压缩试验研究[J]. 煤炭学报,2017,42(6):1443−1450.
WANG Bo, GAO Changyan, CHEN Xuexi, et al. Axial load test study on the perturbation properties of rock rheology[J]. Journal of China Coal Society,2017,42(6):1443−1450.
|
| [2] |
崔峰,张廷辉,来兴平,等. 冲击地压矿井不同采动强度下的开采扰动特征及其产能[J]. 煤炭学报,2021,46(12):3781−3793.
CUI Feng, ZHANG Tinghui, LAI Xingping, et al. Mining disturbance characteristics and productivity of rock burst mines under different mining intensities[J]. Journal of China Coal Society,2021,46(12):3781−3793.
|
| [3] |
祖国利,王俊,宁建国,等. 冲击载荷作用下预应力锚杆锚固阻裂效应试验研究[J]. 岩土工程学报,2023,45(8):1743−1753.
ZU Guoli, WANG Jun, NING Jianguo, et al. Experimental study on anchoring crack-resistance effects of prestressed anchor under impact loads[J]. Chinese Journal of Geotechnical Engineering,2023,45(8):1743−1753.
|
| [4] |
王波,陆长亮,刘重阳,等. 流变扰动效应引起岩石微观损伤演化试验研究[J]. 煤炭学报,2020,45(S1):247−254.
WANG Bo, LU Changliang, LIU Chongyang, et al. Experimental study on micro-damage evolution of rock caused by rheological disturbance effect[J]. Journal of China Coal Society,2020,45(S1):247−254.
|
| [5] |
王青元,刘杰,王培涛,等. 冲击扰动诱发蠕变岩石加速失稳破坏试验[J]. 岩土力学,2020,41(3):781−788,798.
WANG Qingyuan, LIU Jie, WANG Peitao, et al. Experimental investigation of accelerated failure of creep rock induced by impact disturbance[J]. Rock and Soil Mechanics,2020,41(3):781−788,798.
|
| [6] |
金解放,李夕兵,邱灿,等. 岩石循环冲击损伤演化模型及静载荷对损伤累积的影响[J]. 岩石力学与工程学报,2014,33(8):1662−1671.
JIN Jiefang, LI Xibing, QIU Can, et al. Evolution model for damage accumulation of rock under cyclic impact loadings and effect of static loads on damage evolution[J]. Chinese Journal of Rock Mechanics and Engineering,2014,33(8):1662−1671.
|
| [7] |
ZHU W C, LI S H, LI S, et al. Influence of dynamic disturbance on the creep of sandstone:An experimental study[J]. Rock Mechanics and Rock Engineering,2019,52(4):1023−1039. doi: 10.1007/s00603-018-1642-7
|
| [8] |
吉东亮,程辉,赵洪宝,等. 冲击扰动下岩石蠕变损伤演化与失稳诱发机制[J]. 煤炭学报,2024,49(S1):197−207.
JI Dongliang, CHENG Hui, ZHAO Hongbao, et al. Creep damage evolution and instability induced mechanism of rock under impact disturbance[J]. Journal of China Coal Society,2024,49(S1):197−207.
|
| [9] |
WHITTLES D N, KINGMAN S, LOWNDES I, et al. Laboratory and numerical investigation into the characteristics of rock fragmentation[J]. Minerals Engineering,2006,19(14):1418−1429. doi: 10.1016/j.mineng.2006.02.004
|
| [10] |
马利遥,胡斌,刘霁,等. 冲击扰动下泥页岩块剪切蠕变损伤特性研究[J]. 固体力学学报,2022,43(5):646−657.
MA Liyao, HU Bin, LIU Ji, et al. Study on shear creep damage characteristics of shale block under impact disturbance[J]. Chinese Journal of Solid Mechanics,2022,43(5):646−657.
|
| [11] |
苏荣华,刘晓林,沈洪爽. 周期冲击扰动下粉砂岩单轴蠕变特性研究[J]. 应用基础与工程科学学报,2018,26(6):1327−1337.
SU Ronghua, LIU Xiaolin, SHEN Hongshuang. Uniaxial creep characteristics of siltstone under cyclic shock disturbance[J]. Journal of Basic Science and Engineering,2018,26(6):1327−1337.
|
| [12] |
姜鹏. 基于黏弹塑性损伤耦合的非均质岩石蠕变破坏过程模拟[D]. 武汉:武汉理工大学,2019.
JIANG Peng. Simulation of creep failure process of heterogeneous rocks based on viscoelastic-plastic damage coupling[D]. Wuhan:Wuhan University of Technology, 2019.
|
| [13] |
GRADY D E, KIPP M E. Continuum modelling of explosive fracture in oil shale[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1980,17(3):147−157.
|
| [14] |
KUSZMAUL J S. A new constitution model for fragmentation of rock under dynamic loading[C]//Proceedings of the 2nd International Symposium on Rock Fragmentation by Blasting. Canada:Keystone,1987:412−423.
|
| [15] |
TAYLOR L M, CHEN E P, KUSZMAUL J S. Microcrack-induced damage accumulation in brittle rock under dynamic loading[J]. Computer Methods in Applied Mechanics and Engineering,1986,55(3):301−320. doi: 10.1016/0045-7825(86)90057-5
|
| [16] |
胡斌,盛建龙,李京,等. 黄山石灰石矿磨环凼滑坡治理分析与设计和800万吨/年技改上山公路周边潜在灾害分析及治理设计研究[R]. 武汉:武汉科技大学,2019.
HU Bin, SHENG Jianlong, LI Jing, et al. Analysis and design of landslide treatment design and treatment design of 8 million tons/year technical transformation of 8 million tons/year uphill highway in Huangshan limestone mine[R]. Wuhan:Wuhan University of Science and Technology, 2019.
|
| [17] |
赵骏,江梦飞,范晨,等. 真三轴应力下锦屏大理岩长期强度确定方法[J]. 岩石力学与工程学报,2023,42(S1):3324−3330.
ZHAO Jun, JIANG Mengfei, FAN Chen, et al. Long-term strength determination method of Jinping Dali rock under true triaxial stress[J]. Chinese Journal of Rock Mechanics and Engineering,2023,42(S1):3324−3330.
|
| [18] |
张龙云,张强勇,李术才,等. 硬脆性岩石卸荷流变试验及长期强度研究[J]. 煤炭学报,2015,40(10):2399−2407.
ZHANG Longyun, ZHANG Qiangyong, LI Shucai, et al. Unloading rheological tests of hard brittle rock and its long-term strength analysis[J]. Journal of China Coal Society,2015,40(10):2399−2407.
|
| [19] |
张晓平,王思敬,刘泉声. 一种测量岩石压缩裂纹扩展过程声波波速的连续测量方法[J]. 工程地质学报,2018,26(1):91−96.
ZHANG Xiaoping, WANG Sijing, LIU Quansheng. A continuing measure method for acoustic wave velocity measurement during cracking processes of rock[J]. Journal of Engineering Geology,2018,26(1):91−96.
|
| [20] |
王登科,董博文,魏建平,等. 不同冲击速度下含气砂岩损伤−渗流特性试验研究[J]. 煤炭学报,2023,48(5):2138−2152.
WANG Dengke, DONG Bowen, WEI Jianping, et al. Experimental study on damage and seepage features of gas bearing sandstone under different impact velocities loading[J]. Journal of China Coal Society,2023,48(5):2138−2152.
|
| [21] |
朱劲松,肖汝诚,宋玉普. 混凝土双轴抗压疲劳累积损伤规律试验研究[J]. 土木工程学报,2005,38(6):104−109.
ZHU Jinsong, XIAO Rucheng, SONG Yupu. Experimental study on the cumulative fatigue damage of plain concrete under biaxial compression[J]. China Civil Engineering Journal,2005,38(6):104−109.
|
| [22] |
HU B, WANG Z Q, LI J, et al. A new shear creep damage model for rock masses after considering initial damage[J]. PLoS One,2023,18(3):e0280793. doi: 10.1371/journal.pone.0280793
|
| [23] |
殷德顺,任俊娟,和成亮,等. 一种新的岩土流变模型元件[J]. 岩石力学与工程学报,2007,26(9):1899−1903.
YIN Deshun, REN Junjuan, HE Chengliang, et al. A new rheological model element for geomaterials[J]. Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1899−1903.
|
| [24] |
孙昌跃,刘德顺,段凯. 基于差分进化算法的钻头波阻辨识研究[J]. 煤炭学报,2012,37(2):350−354.
SUN Changyue, LIU Deshun, DUAN Kai. Identifying the characteristic impedance of the drill bit based on differential evolution algorithm[J]. Journal of China Coal Society,2012,37(2):350−354.
|
Website Copyright © Editorial Department of Coal Journal 京ICP备05086979号-14
Address：Coal Tower,Hepingjie District 13, Chaoyang,Beijing,China
Postal Code：100013
Tel：（010）87986411
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: