基于改进力学等效的岩体关键节理倾角特征试验研究

doi:10.13722/j.cnki.jrme.2022.0603

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Abstract In order to identify the key joints that have significant influence on the mechanical properties of rock mass from the complex random joint network，and to realize reasonable simplification of the joint network. The characteristics of the random joint network were studied by taking the dip angle as a variable. A random joint network was constructed based on Monte Carlo theory，and 7 kinds of joint specimens were prepared by 3D printing technology after eliminating a certain inclination angle. The uniaxial compression test was carried out. The variation coefficient method was used to improve the mechanical equivalent analysis method，and the dip angle characteristics of key joints were analyzed comprehensively based on the strength，deformation and energy characteristics of specimens. The results show that：(1) with increasing the joint removal angle，the peak stress and elastic modulus increase and then decrease，but the peak strain decreases and then increases. (2) The prepeak elastic energy density of the specimens increases with the joint removal angle，and the dissipation energy density shows a decrease-stabilize-increase trend. (3) The weights of 7 mechanical parameters are determined based on coefficient of variation method. It is considered that every dip angles has significant influence on specimens by comprehensive analysis of mechanical properties. The 90° and 45° dip angles have the most significant effect，while the 15° dip angle has minimal effect.

Key words： rock mechanics discrete fracture network joint angle coefficient of variation method weight of mechanical parameters mechanical equivalent analysis

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	Articles by authors
	JIN Aibing1
	2
	LU Tong1
	2
	WANG Benxin1
	2
	CHEN Shuaijun1
	2
	ZHANG Jinghui1
	2
	SU Nan1
	2

Cite this article:

JIN Aibing1,2,LU Tong1, et al. Experimental study on the dip characteristics of key joints in rock mass based on improved mechanical equivalence[J]. , 2023, 42(1): 76-87.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0603 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/I1/76

[1]	陈卫忠，王鲁瑀，谭贤君，等. 裂隙岩体地下工程稳定性研究发展趋势[J]. 岩石力学与工程学报，2021，40(10)：1 945–1 961.(CHEN Weizhong，WANG Luyu，TAN Xianjun，et al. State-of-the-art and development tendency of the underground engineering stability of fractured rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(10)：1 945–1 961.(in Chinese))
[2]	金爱兵，陆通，王本鑫，等. 基于力学等效的岩体关键节理迹长阈值研究[J]. 岩石力学与工程学报，2022，41(5)：904–915.(JIN Aibing，LU Tong，WANG Benxin，et al. Study on the length threshold of key joint trace in rock mass based on mechanical equivalence[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(5)：904–915.(in Chinese))
[3]	马芹永，苏晴晴，马冬冬，等. 含不同节理倾角深部巷道砂岩SHPB动态力学破坏特性试验研究[J]. 岩石力学与工程学报，2020，39(6)：1 104–1 116.(MA Qinyong，SU Qingqing，MA Dongdong，et al. SHPB experimental study on dynamic characteristics and failure behaviors of sandstone containing weakly filled joints with various angles in deep roadways[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(6)：1 104–1 116.(in Chinese))
[4]	卢运虎，金衍，陈勉，等. 高温高压耦合下含不同倾角充填缝砂岩的强度实验研究[J]. 岩石力学与工程学报，2019，38(增1)：2 668–2 679.(LU Yunhu，JIN Yan，CHEN Mian，et al. Experimental study on strength of sandstone with different fracture angles and different filling methods under high-temperature and high-pressure coupling[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.1)：2 668–2 679.(in Chinese))
[5]	SU Q Q，MA Q Y，MA D D，et al. Dynamic mechanical characteristic and fracture evolution mechanism of deep roadway sandstone containing weakly filled joints with various angles[J]. International Journal of Rock Mechanics and Mining Sciences，2021，137：104552.
[6]	LI D Y，HAN Z Y，ZHU Q Q，et al. Stress wave propagation and dynamic behavior of red sandstone with single bonded planar joint at various angles[J]. International Journal of Rock Mechanics and Mining Sciences，2019，117：162–170.
[7]	CAO R H，YAO R B，MENG J J，et al. Failure mechanism of non-persistent jointed rock-like specimens under uniaxial loading：Laboratory testing[J]. International Journal of Rock Mechanics and Mining Sciences，2020，132：104341.
[8]	MALAVIKA V，MAJI V B，BOOMINATHAN A. Influence of rock joints on longitudinal wave velocity using experimental and numerical techniques[J]. International Journal of Rock Mechanics and Mining Sciences，2021，141：104699.
[9]	QIAN R P，FENG G R，GUO J，et al. Experimental investigation of mechanical characteristics and cracking behaviors of coal specimens with various fissure angles and water-bearing states[J]. Theoretical and Applied Fracture Mechanics，2022，120：103406.
[10]	金爱兵，王树亮，王本鑫，等. 基于DIC技术的3D打印节理试件破裂机制研究[J]. 岩土力学，2020，41(10)：3 214–3 224.(JIN Aibing，WANG Shuliang，WANG Benxin，et al. Study on the fracture mechanism of 3D-printed-joint specimens based on DIC technology[J]. Rock and Soil Mechanics，2020，41(10)：3 214–3 224.(in Chinese))
[11]	何满潮，李杰宇，任富强，等. 不同层理倾角砂岩单向双面卸荷岩爆弹射速度实验研究[J]. 岩石力学与工程学报，2021，40(3)：433–447.(HE Manchao，LI Jieyu，REN Fuqiang，et al. Experimental investigation on rockburst ejection velocity of unidirectional double-face unloading of sandstone with different bedding angles[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(3)：433–447.(in Chinese))
[12]	CHEN Y A，XU J，PENG S J，et al. Experimental study on the acoustic emission and fracture propagation characteristics of sandstone with variable angle joints[J]. Engineering Geology，2021，292：106247.
[13]	WANG X Y，ZHU Z M，ZHOU L，et al. Study on the effects of joints orientation and strength on failure behavior in shale specimen under impact loads[J]. International Journal of Impact Engineering，2022，163：104162.
[14]	LIU X J，ZHU W C，ZHANG P H，et al. Failure in rock with intersecting rough joints under uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2021，146：104832.
[15]	LIN Q B，CAO P，WEN G P，et al. Crack coalescence in rock-like specimens with two dissimilar layers and pre-existing double parallel joints under uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2021，139：104621.
[16]	王本鑫，金爱兵，孙浩，等. 基于DIC的含不同角度3D打印粗糙交叉节理试样破裂机制研究[J]. 岩土力学，2021，42(2)：439–450.(WANG Benxin，JIN Ai-bing，SUN Hao，et al. Study on fracture mechanism of specimens with 3D printed rough cross joints at different angles based on DIC[J]. Rock and Soil Mechanics，2021，42(2)：439–450.(in Chinese))
[17]	王本鑫，金爱兵，王树亮，等. 3D打印交叉节理试件力学破裂特性研究[J]. 岩土力学，2021，42(1)：39–49.(WANG Benxin，JIN Aibing，WANG Shuliang，et al. Mechanical characteristics and fracture mechanism of 3D printed rock samples with cross joints[J]. Rock and Soil Mechanics，2021，42(1)：39–49.(in Chinese))
[18]	金爱兵，王树亮，王本鑫，等. 基于DIC的3D打印交叉节理试件破裂机制研究[J]. 岩土力学，2020，41(12)：3 862–3 872.(JIN Aibing，WANG Shuliang，WANG Benxin，et al. Fracture mechanism of specimens with 3D printing cross joint based on DIC technology[J]. Rock and Soil Mechanics，2020，41(12)：3 862–3 872.(in Chinese))
[19]	王同旭，马文强，曲孔典. 随机节理岩体巷道再生顶板失稳机制与控制研究[J]. 采矿与安全工程学报，2016，33(2)：265–270.(WANG Tongxu，MA Wenqiang，QU Kongdian. Study of instability mechanism and control of roadway regenerated roof in random joint rock[J]. Journal of Mining and Safety Engineering，2016，33(2)：265–270.(in Chinese))
[20]	江权，宋磊博. 3D打印技术在岩体物理模型力学试验研究中的应用研究与展望[J]. 岩石力学与工程学报，2018，37(1)：23–37.(JIANG Quan，SONG Leibo. Study on application of 3D printing technology for physical modeling in rock mechanics and outlook[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(1)：23–37.(in Chinese))
[21]	宋宇，刘保国，刘浩，等. 基于变形与脆性特性的类岩石材料配比正交试验研究[J]. 岩土力学，2020，41(8)：2 675–2 684.(SONG Yu，LIU Baoguo，LIU Hao，et al. Orthogonal test method for determination of the proportion of rock-like material based on properties of deformation and brittleness[J]. Rock and Soil Mechanics，2020，41(8)：2 675–2 684.(in Chinese))
[22]	陈国庆，吴家尘，蒋万增，等. 基于弹性能演化全过程的岩石脆性评价方法[J]. 岩石力学与工程学报，2020，39(5)：901–911.(CHEN Guoqing，WU Jiachen，JIANG Wanzeng，et al. An evaluation method of rock brittleness based on the whole process of elastic energy evolution[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(5)：901–911.(in Chinese))
[23]	时光耀，李理. 基于能量组成及应变能理论的裂缝密度定量预测[J]. 岩石力学与工程学报，2021，40(增1)：2 826–2 833.(SHI Guangyao，LI Li. Quantitative fracture density prediction based on energy composition and strain energy theory[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(Supp.1)：2 826–2 833.(in Chinese))
[24]	王桂林，文兴祥，张亮. 单轴压缩下节理砂岩能量演化机制倾角效应[J]. 中南大学学报：自然科学版，2020，51(7)：1 913–1 923. (WANG Guilin，WEN Xingxiang，ZHANG Liang. Dip effect of energy evolution mechanism of jointed sandstone under uniaxial compression[J]. Journal of Central South University：Science and Technology，2020，51(7)：1 913–1 923.(in Chinese))
[25]	温韬，张馨，孙金山，等. 基于峰前和峰后能量演化特征的岩石脆性评价[J]. 地球科学，2021，46(9)：3 385–3 396.(WEN Tao，ZHANG Xin，SUN Jinshan，et al. Brittle evaluation based on energy evolution at pre-peak and post-peak stage[J]. Earth Science，2021，46(9)：3 385–3 396.(in Chinese))
[26]	白洁，蒋华彬，张小飞，等. 基于变异系数法对气流膨化处理马铃薯方便粥品质的评价[J]. 食品科学，2021，42(15)：81–88.(BAI Jie，JIANG Huabin，ZHANG Xiaofei，et al. Quality evaluation of instant potato congee treated by air puffing based on variation coefficients[J]. Food Science，2021，42(15)：81–88.(in Chinese))
[27]	陶志富，葛璐璐，陈华友. 基于滑动窗口的一类非负可变权组合预测方法[J]. 控制与决策，2020，35(6)：1 446–1 452.(TAO Zhifu，GE Lulu，CHEN Huayou，et al. Non-negative variable weight combination forecasting method based on sliding window[J]. Control and Decision，2020，35(6)：1 446–1 452.(in Chinese))
[28]	陈继明，王元皓，李其莹，等. 基于低电压穿越能力评价的双馈风电机组风电场无功出力控制[J]. 太阳能学报，2021，42(4)：466–472.(CHEN Jiming，WANG Yuanhao，LI Qiying，et al. Reactive power output control of doubly-fed wind turbines in wind farms based on low voltage ride-through capability evaluation[J]. Acta Energiae Solaris Sinica，2021，42(4)：466–472.(in Chinese))
[29]	徐云飞，程琦，魏祥平，等. 变异系数法结合优化神经网络的无人机冬小麦长势监测[J]. 农业工程学报，2021，37(20)：71–80.(XU Yunfei，CHENG Qi，WEI Xiangping，et al. Monitoring of winter wheat growth by unmanned aerial vehicle based on coefficient of variation method combined with optimized neural network[J]. Transactions of the Chinese Society of Agricultural Engineering，2021，37(20)：71–80.(in Chinese))
[30]	王鹤，余中枢，李筱婧，等. 基于主成分分析方法的多类型电动汽车接入配电网的综合风险评估[J]. 电力自动化设备，2021，41(11)：57–65.(WANG He，YU Zhongshu，LI Xiaojing，et al. Comprehensive risk assessment of multiple types of electric vehiclesconnected to distribution network based on principal component analysis method[J]. Electric Power Automation Equipment，2021，41(11)：57–65.(in Chinese))