不同注浆材料填充双裂隙类岩石试样力学特性研究

doi:10.13722/j.cnki.jrme.2023.1021

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (8765 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要注浆是裂隙岩体稳定性控制的主要技术之一，不同注浆材料对裂隙岩体的注浆加固效果存在较大差异。选取硫铝酸盐水泥(SAC)、普通硅酸盐水泥(OPC)和环氧树脂(EPR)3种注浆材料，对预制平行双裂隙类岩石试样进行充填，开展单轴压缩试验、声发射以及扫描电镜试验。结果表明：EPR填充对裂隙试样强度最大，OPC水泥次之，SAC水泥最小。试样破坏模式则受填充材料影响突出，EPR填充试样不受预制裂纹控制，而SAC和OPC填充试样则主要由于裂隙扩展贯通发生的拉剪混合破坏。扫描电镜结果表明上述差异主要受控于不同浆液类型的浆–岩胶结特征，SAC和OPC填充浆–岩界面为覆盖型，而EPR填充则为融合型。在上述试验结果基础上，采用颗粒流程序(PFC)建立表征不同胶结模式的数值模型，分析不同注浆填充材料加固机制。数值模拟结果表明，试样加载过程中拉剪微裂纹比例、微裂纹倾角分布以及颗粒位移方向均受填充材料影响。因此，对于不同注浆材料，其自身强度和胶结性能改变了浆–岩胶结模式，影响了裂隙充填试样的受力状态，进而造成加载过程中浆液和周围岩体颗粒运动和微破裂的差异，最终影响了宏观强度特性和破坏模式。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	刘学伟1
	2
	王赛1
	2
	刘滨1
	刘泉声3
	姚文杰1
	贾闯1
	陈海啸1
	2

关键词 ：岩石力学, 注浆材料, 浆岩胶结, 强度特征, 数值模拟, 破坏特征

Abstract：Grouting is one of the main technologies for controlling the stability of fractured rock masses，and different grouting materials have significant differences in their reinforcement effects on fractured rock masses. In this study，three grouting materials，sulfate-aluminate cement(SAC)，ordinary Portland cement(OPC)，and epoxy resin(EPR)，were selected to fill pre-existing parallel double-cracks rock samples，and uniaxial compression tests、AE and SEM tests were conducted on these samples. The results showed that epoxy resin filling had the highest strength for the fissured samples，followed by OPC cement，and SAC cement had the lowest strength. The failure mode of the samples was significantly influenced by the filling material，with EPR-filled samples not being controlled by pre-existing cracks，while SAC and OPC-filled samples mainly exhibited a tensile-shear mixed failure caused by crack extension and breakthrough. Electron microscopy scans indicated that the differences were primarily due to the bonding characteristics between the different grout types and the rock. The interfaces of SAC and OPC filling were of the cover type，while EPR filling belonged to the fusion type. Based on these experimental results，a numerical model representing different bonding patterns was established using the Particle Flow Code(PFC)，and the reinforcement mechanisms of different grouting materials were analyzed. The numerical simulation results showed that the proportion of tensile-shear microcracks，the distribution of microcrack inclination angles，and particle displacement vectors during the sample loading process were significantly influenced by the grouting material. Due to differences in the strength and bonding performance of the grout itself，the bonding pattern between the grout and the rock was altered，leading to changes in the movement of grout and rock particles and microcrack formation during the loading process，ultimately resulting in differences in macroscopic strength and failure modes.

Key words： rock mechanics grouting materials grout-rock bonding strength property numerical simulation failure mechanism

引用本文:

刘学伟1，2，王赛1，2，刘滨1，刘泉声3，姚文杰1，贾闯1，陈海啸1，2. 不同注浆材料填充双裂隙类岩石试样力学特性研究[J]. 岩石力学与工程学报, 2024, 43(3): 623-638.
LIU Xuewei1，2，WANG Sai1，2，LIU Bin1，LIU Quansheng3，YAO Wenjie1，JIA Chuang1，CHEN Haixiao1，2. Effect of filling grouting material on mechanical properties and mechanism of rock-like samples with double?crack. , 2024, 43(3): 623-638.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.1021 或 http://rockmech.whrsm.ac.cn/CN/Y2024/V43/I3/623

[9]	XU R，ZHAO Y，HU Y，et al. Experimental investigation on the effect of preexisting orthogonal cross flaws on cracking behaviors and acoustic emission characteristics of red sandstone[J]. Theoretical and Applied Fracture Mechanics，2022，122：103634.
[18]	黄彦华，杨圣奇. 非共面双裂隙红砂岩宏细观力学行为颗粒流模拟[J]. 岩石力学与工程学报，2014，33(8)：1 644-1 653.(HUANG Yanhua，YANG Shengqi. Particle flow simulation of macro-and meso-mechanical behavior of red sandstone containing two pre-existing non-coplanar fissures[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(8)：1 644-1 653.(in Chinese))
[27]	LUO X，CAO P，LIN Q，et al. Mechanical behaviour of fracture-filled rock-like specimens under compression-shear loads：an experimental and numerical study[J]. Theoretical and Applied Fracture Mechanics，2021，113：102935.
[32]	卢海峰，朱晨东，刘泉声. 不同注浆材料作用下结构面剪切力学特性研究[J]. 岩石力学与工程学报，2021，40(9)：1 803-1 811.(LU Haifeng，ZHU Chendong，LIU Quansheng. Study on shear mechanical properties of structural planes grouted with different materials[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(9)：1 803-1 811.(in Chinese))
[34]	WANG Y，ZHANG H，LIN H，et al. Fracture behaviour of central-flawed rock plate under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics，2020，106(22)：1 025-1 043.
[35]	肖福坤，刘刚，秦涛，等. 拉-压-剪应力下细砂岩和粗砂岩破裂过程声发射特性研究[J]. 岩石力学与工程学报，2016，35(增2)：3 458-3 472.(XIAO Fukun，LIU Gang，QIN Tao，et al. Acoustic emission(AE) characteristics of fine sandstone and coarse sandstone fracture process under tension-compression-shear stress[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 458-3 472.(in Chinese))
[36]	王伟，赵毅鑫，高艺瑞，等. 层理和预制裂纹方向对煤断裂力学性质影响规律试验研究[J]. 岩石力学与工程学报，2022，41(3)：433-445.(WANG Wei，ZHAO Yixin，GAO Yirui，et al. Experimental research of influences of bedding and pre-crack directions on fracture characteristics of coal[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(3)：433-445.(in Chinese))
[5]	张付涛. 裂隙岩体注浆材料研究及应用[硕士学位论文][D]. 青岛：山东科技大学，2012.(ZHANG Futao. The Study and application of Grouting materials in rock mass of the fissures[M. S. Thesis][D]. Qingdao：Shandong University of Science and Technology，2012.(in Chinese))
[28]	ZHUANG X，ZHOU S. An experimental and numerical study on the influence of filling materials on double-crack propagation[J]. Rock Mechanics and Rock Engineering，2020，53(12)：5 571-5 591.
[30]	申艳军，荣腾龙，杨更社，等. 类砂岩相似材料配合比方案试验研究[J]. 水利水电科技进展，2016，36(4)：75-79.(SHEN Yanjun，RONG Tenglong，YANG Gengshe，et al. Experimental study on ratio of quasi-sandstone similar material[J]. Advances in Science and Technology of Water Resources，2016，36(4)：75-79.(in Chinese))
[6]	张波，李术才，杨学英，等. 含交叉多裂隙类岩石材料单轴压缩力学性能研究[J]. 岩石力学与工程学报，2015，34(9)：1 777-1 785. (ZHANG Bo，LI Shucai，YANG Xueying，et al. Mechanical property of rock-like material with intersecting multi-flaws under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(9)：1 777-1 785.(in Chinese))
[15]	NIU Y，ZHOU X P，BERTO F. Evaluation of fracture mode classification in flawed red sandstone under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics，2020，107：102528.
[24]	张波，李术才，张敦福，等. 含充填节理岩体相似材料试件单轴压缩试验及断裂损伤研究[J]. 岩土力学，2012，33(6)：1 647-1 652. (ZHANG Bo，LI Shucai，ZHANG Dunfu，et al．Uniaxial compression mechanical property test，fracture and damage analysis of similar material of jointed rock mass with filled cracks[J]. Rock and Soil Mechanics，2012，33(6)：1 647-1 652.(in Chinese))
[33]	陈臣. 基于声发射的岩石内部裂纹扩展特性研究[硕士学位论文][D]. 重庆：重庆交通大学，2021.(CHEN Chen. Study on propagation characteristics of rock internal crack based on acoustic emission[M. S. Thesis][D]. Chongqing：Chongqing Jiaotong University，2021.(in Chinese))
[37]	LI W S，SHAIKH F U A，WANG L G，et al. Experimental study on shear property and rheological characteristic of superfine cement grouts with nano-SiO2 addition[J]. Construction and Building Materials，2019，228：117046.
[39]	PARK J W，SONG J J. Numerical simulation of a direct shear test on a rock joint using a bonded-particle model[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(8)：1 315-1 328.
[1]	陈军涛，郭惟嘉，尹立明，等. 深部开采底板裂隙扩展演化规律试验研究[J]. 岩石力学与工程学报，2016，35(11)：2 298-2 306. (CHEN Juntao，GUO Weijia，YIN Liming，et al. Experimental study of floor cracking under deep mining[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(11)：2 298-2 306.(in Chinese))
[3]	李术才，张伟杰，张庆松，等 .富水断裂带优势劈裂注浆机制及注浆控制方法研究[J]. 岩土力学，2014，35(3)：744-752.(LI Shucai，ZHANG Weijie，ZHANG Qingsong，et al. Research on advantage-fracture grouting mechanism and controlled grouting method in water-rich fault zone[J]. Rock and Soil Mechanics，2014，35(3)：744-752. (in Chinese))
[4]	刘学伟，刘泉声，刘建平，等. 复杂应力条件下裂隙网络扩展机制试验研究[J]. 岩石力学与工程学报，2016，35(增2)：3 662-3 670. (LIU Xuewei，LIU Quansheng，LIU JIanping，et al. Experimental study on mechanism for fracture network initiation under complex stress conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 662-3 670.(in Chinese))
[13]	YANG S Q. Experimental investigation on strength failure and crack evolution behavior of brittle sandstone containing a single fissure[J]. Strength Failure and Crack Evolution Behavior of Rock Materials Containing Pre-existing Fissures，2015，(1)：15-43.
[22]	ZHAO Y，GAO Y，WU S，et al. Experimental and numerical study of failure characteristics of brittle rocks with single internal 3D open-type flaw[J]. Acta Geotechnica，2021，16(10)：3 087-3 113.
[31]	康永水，耿志，刘泉声，等. 我国软岩大变形灾害控制技术与方法研究进展[J]. 岩土力学，2022，43(8)：2 035-2 059.(KANG Yongshui，GENG Zhi，LIU Quansheng，et al. Research progress on support technology and methods for soft rock with large deformation hazards in China[J]. Rock and Soil Mechanics，2022，43(8)：2 035-2 059.(in Chinese))
[2]	钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报，2012，31(10)：1 945-1 956.(QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)： 1 945-1 956.(in Chinese))
[11]	YU L，YAO Q，XU Q，et al. Experimental and numerical simulation study on crack propagation of fractured fine sandstone under the influence of loading rate[J]. Journal of China Coal Society，2021，46(11)：3 488-3 501.
[20]	BAHAADDINI M，SHARROCK G，HEBBLEWHITE B K. Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression[J]. Computers and Geotechnics，2013，49：206-225.
[29]	路亚妮，李新平，吴兴宏. 三轴压缩条件下冻融单裂隙岩样裂缝贯通机制[J]. 岩土力学，2014，35(6)：1 579-1 584.(LU Yani，LI Xinping，WU Xinghong. Fracture coalescence mechanism of single flaw rock specimen due to freeze-thaw under triaxial compression[J]. Rock and Soil Mechanics，2014，35(6)：1 579-1 584.(in Chinese))
[38]	ASADI M S，RASOULI V，BARLA V. A bonded particle model simulation of shear strength and asperity degradation for rough rock fractures[J]. Rock Mechanics and Rock Engineering，2012，45(5)： 649-675.
[7]	张科，刘享华，李昆，等. 含孔多裂隙岩石力学特性与破裂分形维数相关性研究[J]. 岩石力学与工程学报，2018，37(12)：2 785-2 794.(ZHANG Ke，LIU Xianghua，LI Kun，et al. Investigation on the correlation between mechanical characteristics and fracturing fractal dimension of rocks containing a hole and multi-flaws[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(12)：2 785-2 794.(in Chinese))
[8]	陈卫忠，李术才，邱祥波，等. 岩石裂纹扩展的实验与数值分析研究[J]. 岩石力学与工程学报，2003，22(1)：18-23.(CHEN Weizhong，LI Shucai，QIU Xiangbo，et al. Experimental and numerical research on crack propagation in rock under compression[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(1)：18-23.(in Chinese))
[10]	XU L，GONG F，LUO S. Effects of pre-existing single crack angle on mechanical behaviors and energy storage characteristics of red sandstone under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics，2021，113：102933.
[12]	刘学伟，刘泉声，陈元，等. 裂隙形式对岩体强度特征及破坏模式影响的试验研究[J]. 岩土力学，2015，36(增 2)：208-214.(LIU Xuewei，LIU Quansheng，CHEN Yuan，et al. Experimental study of effects of fracture type on strength characteristics and failure modes of fractured rock mass[J]. Rock and Soil Mechanics，2015，36(Supp. 2)：208-214.(in Chinese))
[14]	WANG Y Q，PENG K，SHANG X Y，et al. Experimental and numerical simulation study of crack coalescence modes and microcrack propagation law of fissured sandstone under uniaxial compression[J]. Theoretical and Applied Fracture Mechanics，2021，115：103060.
[16]	ZHANG X P，WONG L. Crack Initiation，Propagation and coalescence in rocklike material containing two flaws：a numerical study based on bonded-particle model approach[J]. Rock Mechanics and Rock Engineering，2013，46(5)：1 001-1 021.
[17]	ZHANG X P，WONG L. Cracking processes in rock-like material containing a single flaw under uniaxial compression：a numerical study based on parallel bonded-particle model approach[J]. Rock Mechanics and Rock Engineering，2012，45(5)：711-737.
[19]	田文岭，杨圣奇，黄彦华. 不同围压下共面双裂隙脆性砂岩裂纹演化特性颗粒流模拟研究[J]. 采矿与安全工程学报，2017，34(6)：1 207-1 215.(TIAN Wenling，YANG Shengqi，HUANG Yanhua. PFC2D simulation on crack evolution behavior of brittle sandstone containing two coplanar fissures under different confining pressures [J]. Journal of Mining and Safety Engineering，2017，34(6)：1 207-1 215. (in Chinese))
[21]	CAI M. Influence of intermediate principal stress on rock fracturing and strength near excavation boundaries-Insight from numerical modeling[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(5)：763-772.
[23]	HUANG Y H，YANG S Q，TIAN W L. Crack coalescence behavior of sandstone specimen containing two pre-existing flaws under different confining pressures[J]. Theoretical and Applied Fracture Mechanics，2019，99：118-130.
[25]	SHARAFISAFA M，ALIABADIAN Z，TAHMASEBINIA F，et al. A comparative study on the crack development in rock-like specimens containing unfilled and filled flaws[J]. Engineering Fracture Mechanics，2021，241：107405.
[26]	ZHOU X，NIU Y，CHENG H，et al. Cracking behaviors and chaotic characteristics of sandstone with unfilled and filled dentate flaw[J]. Theoretical and Applied Fracture Mechanics，2021，112：102876.