不同水灰比浆液加固节理面卸载诱发滑移试验研究

doi:10.13722/j.cnki.jrme.2024.0078

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Abstract In order to investigate the effect of different water-cement ratio slurry reinforcement on the slip characteristics of granite joint faces under unloading-induced slip conditions，this test was conducted on granite joint faces reinforced with various water-cement ratios of cement slurry to carry out constant axial pressure graded unloading of circumferential pressure-induced slip tests. The test results show that：(1) The three-dimensional morphology scanning of the unfilled joint surface revealed that the arithmetic mean height ，root-mean-square height and kurtosis coefficient of the joint surface were 5.744，7.554 and 11.106 before slip，and 13.999，17.586 and 5.431 after slip. The height difference of the surface of the joint surface increases，and stripe cuts gradually disappears. (2) Using SEM(scanning electron microscope) to observe the microstructural damage surface of the reinforced joint surface，it was found that with the increase of water-cement ratio，the strength of the cement skeleton decreased，the fluidity of the slurry increased，and the microscopic damage form of the cement-rock structural surface was changed. (3) The peak shear stresses under the same circumferential pressure were 28.067，15.609 and 8.863 MPa for 0.5，0.7 and 1.0 slurry-reinforced joints，and the shear displacements at the induced slip stage were 0.072，0.050 and 0.061 mm in that order. the shear strength and the ability of the joints to resist slip deformations were both improved. (4) The reinforced joint surface generates energy consumption through creep-slip，which improves the stick-slip phenomenon. According to the analysis of the test results：the smaller the water-cement ratio is，the more energy is dissipated through creep in the cement-rock interlocking structure. When the water-cement ratio is 0.7，the undisturbed creep sliding speed is the lowest，and the slip stability of the formed interlocking structure is stronger.

Key words： rock mechanics unloading-induced slip water-cement ratio slip characteristics grouting reinforcement

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	Articles by authors
	SUN Jinyuan1
	FENG Xianda1
	LIU Richeng2
	3
	LI Shuchen2
	3
	HU Minghui2
	LU Yingrui1

Cite this article:

SUN Jinyuan1,FENG Xianda1,LIU Richeng2, et al. Unloading-induced slip of jointed surfaces reinforced with slurries of different water-cement ratios experimental study#br#[J]. , 2024, 43(S2): 3792-3807.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2024.0078 OR https://rockmech.whrsm.ac.cn/EN/Y2024/V43/IS2/3792

[1]	CHEN M，YANG S Q，RANJITH P G，et al. Cracking behavior of rock containing non-persistent joints with various joints inclinations[J]. Theoretical and Applied Fracture Mechanics，2020，109：102701.
[2]	HU J，LI S C，LIU H L，et al. New modified model for estimating the peak shear strength of rock mass containing nonconsecutive joint based on a simulated experiment[J]. International Journal of Geomechanics，2020，20(7)：04020091.
[3]	LIANG J P，JING H Y，LI X R，et al. The deformation behavior and failure modes of surrounding rock after excavation：a experimental study[J]. Shock and Vibration，2023，(2)：1-19.
[4]	WU W，ZHAO Z H，DUAN K. Unloading-induced instability of a simulated granular fault and implications for excavation-induced seismicity[J]. Tunnelling and Underground Space Technology，2017，63：154-161.
[5]	ELLSWORTH W L. Injection-induced earthquakes[J]. Science，2013，341(6142)：1225942.
[6]	LIU R C，ZHU X J，ZHANG Y J，et al. Simultaneous unloading of shear and normal stresses induces activation of naturally rough-walled sandstone fractures[J]. International Journal of Rock Mechanics and Mining Sciences，2023，170：105488.
[7]	李术才，刘斌，孙怀凤，等. 隧道施工超前地质预报研究现状及发展趋势[J]. 岩石力学与工程学报，2014，33(6)：1 090-1 113.(LI Shucai，LIU Bin，SUN Huaifeng，et al. State of art and trends of advanced geological prediction in tunnel[J]. Chinese Journal of Rock Mechanics and Engineering construction，2014，33(6)：1 090-1 113. (in Chinese))
[8]	LI T，CAI M F，CAI M. A review of mining-induced seismicity in China[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(8)：1 149-1 171.
[9]	KENETI A，SAINSBURY B A. Review of published rockburst events and their contributing factors[J]. Engineering Geology，2018，246：361-373.
[10]	LI S C，LIU R T，ZHANG Q S，et al. Protection against water or mud inrush in tunnels by grouting：a review[J]. Journal of Rock Mechanics and Geotechnical Engineering，2016，8(5)：753-766.
[11]	IBRAGIMOV M N. Soil Stabilization with cement grouts[J]. Soil Mechanics and Foundation Engineering，2005，42(2)：67-72.
[12]	LI Z，LIU H X，DUN Z L，et al. Grouting effect on rock fracture using shear and seepage assessment[J]. Construction and Building Materials，2020，242：118131.
[13]	DU X M，FANG H Y，WANG S Y，et al. Experimental and practical investigation of the sealing efficiency of cement grouting in tortuous fractures with flowing water[J]. Tunnelling and Underground Space Technology，2021，108：103693.
[14]	STILLE H，GUSTAFSON G，HASSLER L. Application of new theories and technology for grouting of dams and foundations on rock[J]. Geotechnical and Geological Engineering，2012，30(3)：603-624.
[15]	KIM Y U，PARK J，CHUN Y W，et al. Evaluation and prediction of physical properties of pressure grouting using laboratory testing and elastic wave velocity[J]. KSCE Journal of Civil Engineering，2013，17(2)：364-367.
[16]	NGUYEN V H，REMOND S，GALLIAS J L. Influence of cement grouts composition on the rheological behaviour[J]. Cement and Concrete Research，2011，41(3)：292-300.
[17]	AXELSSON M，GUSTAFSON G. A robust method to determine the shear strength of cement-based injection grouts in the field[J]. Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research，2006，21(5)：499-503.
[18]	LIU Q S，LEI G F，PENG X X，et al. Rheological characteristics of cement grout and its effect on mechanical properties of a rock fracture[J]. Rock Mechanics and Rock Engineering，2018，51：613-625.
[19]	LU H F，ZHANG Q Z. Investigations on shear properties of soft rock joints under grouting[J]. Rock Mechanics and Rock Engineering，2021，54(4)：1 875-1 883.
[20]	LU Y L，WANG L G，LI Z L，et al. Experimental study on the shear behavior of regular sandstone joints filled with cement grout[J]. Rock Mechanics and Rock Engineering，2017，50：1 321-1 336.
[21]	沈君，刘保国，陈景，等. 辉绿岩裂隙注浆体力学特性试验研究[J]. 岩石力学与工程学报，2020，39(增1)：2 804-2 817.(SHEN Jun，LIU Baoguo，CHEN Jing，et al. Experimental study on mechanical properties of diabase fracture-grouting mass[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(Supp.1)：2 804-2 817.(in Chinese))
[22]	陆银龙，贺梦奇，李文帅，等. 岩石结构面注浆加固微观力学机制与浆-岩黏结界面结构优化[J]. 岩石力学与工程学报，2020，39(9)：1 808-1 818.(LU Yinlong，HE Mengqi，LI Wenshuai，et al. Micromechanical mechanisms of grouting reinforcement in rock joints and microstructure optimization of grout-rock bonding interfaces[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 808-1 818.(in Chinese))
[23]	BRADY B H G，BROWN E T. Rock mechanics for underground mining：Third edition[M]. Dordrecht；Springer Netherlands，2006：1-16.
[24]	李建林，王乐华，孙旭曙. 节理岩体卸荷各向异性力学特性试验研究[J]. 岩石力学与工程学报，2014，33(5)：892-900.(LI Jianlin，WANG Lehua，SUN Xushu. Experimental study on anisotropic mechanical characteristics of jointed rock masses under unloading condition[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(5)：892-900.(in Chinese))
[25]	肖维民，余欢，李锐，等. 薄层充填岩石节理抗剪强度特性试验研究[J]. 岩石力学与工程学报，2019，38(增2)：3 420-3 428. (XIAO Weimin，YU Huan，LI Rui，et al. Experimental research on the shear strength of thinly-infilled rock joints during shearing[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.2)：3 420-3 428.(in Chinese))
[26]	史玲，蔡美峰，赵坚. 充填节理破坏机制及试验[J]. 北京科技大学学报，2012，34(3)：253-259.(SHI Ling，CAI Meifeng，ZHAO Jian. Fracture mechanism and experiment of infilled rock joints[J]. Journal of University of Science and Technology Beijing，2012，34(3)：253-259.(in Chinese))
[27]	KOHLI A H，ZOBACK M D. Frictional properties of shale reservoir rocks[J]. Journal of Geophysical Research-solid Earth，2013，118(9)：5 109-5 125.
[28]	JI Y L，WU W，ZHAO Z H. Unloading-induced rock fracture activation and maximum seismic moment prediction[J]. Engineering Geology，2019，262：105352.
[29]	JI H Q，LIU R C，YU L Y，et al. Influence of joint inclination on mechanical behaviors of shales during unloading-induced slip processes[J]. International Journal of Rock Mechanics and Mining Sciences，2023，170：105487.
[30]	贾洪强. 岩石节理面表面形态与剪切破坏特性的试验研究[硕士学位论文][D]. 长沙：中南大学，2011.(JIA Hongqiang. Experimental research on joint surface state and the characteristics of shear failure[M. S. Thesis][D]. Changsha：Central South University，2011.(in Chinese))
[31]	BELEM T，HOMAND-ETIENNE F，SOULEY M. Quantitative parameters for rock joint surface roughness[J]. Rock Mechanics and Rock Engineering，2000，33(4)：217-242.
[32]	曹秋菊，王金安. 断裂岩石粗糙性与岩体抗剪强度和机制的试验研究[J]. 中国矿业，2012，21(5)：107-111.(CAO Qiuju，WANG jinan. Experimental study on roughness and long shear strength of fracture rock[J]. China Mining Magazine，2012，21(5)：107-111.(in Chinese))
[33]	阮文军. 注浆扩散与浆液若干基本性能研究[J]. 岩土工程学报，2005，27(1)：69-73.(RUAN Wenjun. Research on diffusion of grouting and basic properties of grouts[J]. Chinese Journal of Geotechnical Engineering，2005，27(1)：69-73.(in Chinese))
[34]	季浩奇，刘日成，蔚立元，等. 卸载速率对卸载诱发页岩滑移行为影响的试验研究[J]. 岩石力学与工程学报，2023，42(8)：1 959-1 972. (JI Haoqi，LIU Richeng，YU Liyuan，et al. Influence of unloading rate on mechanical behaviors of shales during unloading-induced slip processes[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(8)：1 959-1 972.(in Chinese))
[35]	朱泽奇，盛谦，肖培伟，等. 岩石卸围压破坏过程的能量耗散分析[J]. 岩石力学与工程学报，2011，30(增1)：2 675-2 681.(ZHU Zeqi，SHENG Qian，XIAO Peiwei，et al. Analysis of energy dissipation in process of unloading confining pressure failure of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：2 675-2 681.(in Chinese))
[36]	ZHANG F S，AN M K，ZHANG L Y，et al. The role of mineral composition on the frictional and stability properties of powdered reservoir rocks[J]. Journal of Geophysical Research：Solid Earth，2019，124(2)：1 480-1 497.
[37]	薛翊国，李术才，苏茂鑫. 青岛胶州湾海底隧道涌水断层注浆效果综合检验方法研究[J]. 岩石力学与工程学报，2011，30(7)：1 382-1 388.(XUE Yiguo，LI Shucai，SU Maoxin. Study of comprehensive test method for grouting effect of water filling fault in Qingdao Kiaochow bay subsea tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(7)：1 382-1 388.(in Chinese))