温度和围压影响下裂隙砂岩渗透注浆过程的实时核磁共振试验研究

doi:10.13722/j.cnki.jrme.2021.0743

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摘要注浆技术作为常用的岩体加固手段已被广泛应用于地下工程中，但注浆加固效果常常受到地下工程所处地层高温、高地应力等环境因素的显著影响。因此，开展不同外界条件下(如温度、围压等)岩体浆液流动扩散机制的研究，对于提高深部软弱围岩的注浆加固效果及保障施工安全有着重要的工程实际意义。本文基于低场核磁共振技术对裂隙砂岩试样开展渗透注浆试验研究，对注浆过程中浆液的核磁信号特征进行实时跟踪测试，分析不同温度、不同围压、不同浆液流速和不同裂隙数量下岩石的浆液注入量、有效注浆时间和浆液充填速率的变化规律。试验结果表明：超细水泥浆液的潜伏期随温度升高而缩短，且浆液的黏度具有显著的时变性和温度相依性。裂隙岩石的浆液最终注入量随着温度和围压的升高而减小。有效注浆时间与浆液流速的增大成反比，与温度的升高成正比。浆液充填速率随着围压的升高而降低，且对围压变化的敏感程度逐渐降低。多裂隙试样中浆液注入量较单裂隙更高，有效注浆时间更短，浆液充填速率更大。在较高浆液流速和较高围压下，微孔隙中浆液充填速率占比明显增大，浆液优先向微孔隙中运移扩散，当微孔隙内浆液达到一定充填度后才向细孔隙和大孔隙中扩散；而温度和裂隙数量对浆液在孔隙中的扩散机制影响较小，各尺寸下浆液充填速率占比变化很小。研究结果为深部软弱岩体的注浆参数设计和选择提供必要指导。

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	吴志军1
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	张锶浪1
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	翁磊1
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	刘泉声1
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	周原1
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关键词 ：岩石力学, 裂隙岩体, 核磁共振, T2谱曲线, 浆液扩散

Abstract：As a common rock reinforcement method，grouting technology has been widely used in underground engineering，while the reinforcement performance is largely affected by the external environmental factors such as high temperature and high geo-stresses. Therefore，it is of great practical significance to study the flow and diffusion mechanism of slurry in fractured rock under different external conditions to enhance the grouting reinforcement effects of deep soft rocks and to ensure the construction safety. In this paper，infiltration grouting tests on fractured sandstone samples were carried out using the low-field NMR technology. During the grouting process，the NMR signal characteristics of the slurry were monitored in real time，and the parameters such as the slurry injection volume，the effective grouting time and the slurry-filling rate were analyzed under the conditions of different temperatures，different confining pressures，different slurry flow rates and different numbers of fractures. The results show that the incubation period of the superfine cement slurry decreases with increasing the temperature and that the slurry viscosity performs significant time-dependent and temperature-dependent characteristics. The final slurry injection volume of the fractured rock decreases with increasing the temperature and the confining pressure. The effective grouting time is inversely proportional to the slurry flow rate while positively proportional to the temperature. The slurry filling rate decreases as the confining pressure increases，accompanying with a decreased sensitivity to the confining pressure. Compared to the samples with single fracture，multi-fractured samples show higher slurry injection volume，shorter effective grouting time and larger slurry filling rate. Under a higher slurry flow rate and a higher confining pressure，the percentage of the slurry filling rate in the micro-pores increases significantly，and the slurry preferentially transports into the micro-pores. When the micro-pores reach a certain filling level，the slurry transports into the meso-pores and macro-pores. However，the temperature and the number of fractures have insignificant effects on the diffusion mechanism of the slurry in the rock pores，and the percentage of the slurry filling rate varies a little in each type of pores. The findings in this study can provide necessary guidance for the optimal design and selection of grouting parameters for deep soft rock mass.

Key words： rock mechanics fractured rock nuclear magnetic resonance(NMR) T2 distribution curve slurry diffusion

引用本文:

吴志军1，2，3，张锶浪1，2，翁磊1，2，刘泉声1，2，周原1，2. 温度和围压影响下裂隙砂岩渗透注浆过程的实时核磁共振试验研究[J]. 岩石力学与工程学报, 2022, 41(4): 660-675.
WU Zhijun1，2，3，ZHANG Silang1，2，WENG Lei1，2，LIU Quansheng1，2，ZHOU Yuan1，2. Real-time NMR tests on fractured sandstones during the infiltration grouting process under different temperatures and confining pressures. , 2022, 41(4): 660-675.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0743 或 http://rockmech.whrsm.ac.cn/CN/Y2022/V41/I4/660

[18]	刘滨，桑昊旻，康永水，等. 岩体裂隙网络注浆模拟试验系统研制及应用[J]. 岩石力学与工程学报，2020，39(3)：540-549.(LIU Bin，SANG Haomin，KANG Yongshui，et al. Development of grouting simulation test system for rock mass fracture network and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(3)：540-549.(in Chinese))
[28]	BOHLOLI B，SKJØLSVOLD O，JUSTNES H，et al. Cements for tunnel grouting-Rheology and flow properties tested at different temperatures[J]. Tunnelling and Underground Space Technology，2019，91：103011.
[38]	ALESIANI M，PIRAZZOLI I，MARAVIGLIA B. Factors affecting early-age hydration of ordinary portland cement studied by NMR：fineness，water-to-cement ratio and curing temperature[J]. Applied Magnetic Resonance，2007，32(3)：385-394.
[48]	李佩. 奥灰岩溶裂隙含水层水平注浆孔浆液扩散规律研究[硕士学位论文][D]. 北京：煤炭科学研究总院，2018.(LI Pei. Research on slurry diffusion law of horizontal grouting hole in Ordovician karst fissure aquifer[M. S. Thesis][D]. Beijing：China Coal Research Institute，2018.(in Chinese))
[19]	湛铠瑜，隋旺华，王文学. 裂隙动水注浆渗流压力与注浆堵水效果的相关分析[J]. 岩土力学，2012，33(9)：2 650-2 655.(ZHAN Kaiyu，SUI Wanghua，WANG Wenxue. Correlation analysis of seepage pressure and water plugging effect during grouting into a fracture with flowing water[J]. Rock and Soil Mechanics，2012，33(9)：2 650-2 655.(in Chinese))
[26]	FU H，JIANG H，QIU X，et al. Seepage characteristics of a fractured silty mudstone under different confining pressures and temperatures[J]. Journal of Central South University，2020，27(7)：1 907-1 916.
[29]	荣驰，陈卫忠，袁敬强，等. 新型水玻璃-酯类注浆材料及其固沙体特性研究[J]. 岩土力学，2020，41(6)：2 034-2 042.(RONG Chi，CHEN Weizhong，YUAN Jingqiang，et al. Rock and soil mechanics study on new sodium silicate-ester grouting material and its properties of grouted-sand[J]. Rock and Soil Mechanics，2020，41(6)：2 034-2 042.(in Chinese))
[36]	佘安明，姚武. 质子核磁共振技术研究水泥早期水化过程[J]. 建筑材料学报，2010，13(3)：376-379.(SHE Anming，YAO Wu. Research on hydration of cement at early age by proton NMR[J]. Journal of Building Materials，2010，13(3)：376-379.(in Chinese))
[39]	刘泉声，卢超波，刘滨，等. 考虑温度及水化时间效应的水泥浆液流变特性研究[J]. 岩石力学与工程学报，2014，33(增2)：3 730- 3 740.(LIU Quansheng，LU Chaobo，LIU Bin，et al. Research on rheological behavior for cement grout considering temperature and hydration time effects[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.2)：3 730-3 740.(in Chinese))
[46]	杨华阳. 黏度时变浆液流变特性与裂隙岩体平面注浆扩散研究[硕士学位论文][D]. 成都：成都理工大学，2016.(YANG Huayang. Rheology of Viscosity changes with time grout material and research of diffusion mechanism of grouting in rock mass fissures[M. S. Thesis][D]. Chengdu：Chengdu University of Technology，2016.(in Chinese))
[22]	孙小康. 深部裂隙岩体注浆浆液扩散机制研究[博士学位论文][D].徐州：中国矿业大学，2019.(SUN Xiaokang. Study on the Diffusion Mechanisms of Grouting within Fractured Rock Mass Under Deep Ground[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2019.(in Chinese))
[24]	王丽娟，李凯，张金接，等. 膏浆平面裂隙动水注浆扩散模型研究[J]. 岩石力学与工程学报，2019，38(增2)：3 404-3 411.(WANG Lijuan，LI Kai，ZHANG Jinjie，et al. Paste slurry planar fracture dynamic water grouting diffusion model research[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.2)：3 404-3 411. (in Chinese))
[32]	GAO H，WANG C，CAO J，et al. Quantitative study on the stress sensitivity of pores in tight sandstone reservoirs of Ordos basin using NMR technique[J]. Journal of Petroleum Science and Engineering，2019，172：401-410.
[34]	程毅翀. 基于低场核磁共振成像技术的岩心内流体分布可视化研究[硕士学位论文][D]. 上海：上海大学，2014.(CHENG Yichong. Visualization study on fluid distribution in core based on low-field MRI method[M. S. Thesis][D]. Shanghai：Shanghai University，2014.(in Chinese))
[42]	JIA H，ZI F，YANG G，et al. Influence of pore water(ice) content on the strength and deformability of frozen argillaceous siltstone[J]. Rock Mechanics and Rock Engineering，2020，53(2)：967-974.
[44]	秦军令. 深井围岩微裂隙超细水泥注浆模拟试验研究[硕士学位论文][D]. 青岛：山东科技大学，2020.(QIN Junling. Experimental study on superfine cement grouting of micro-fracture of surrounding rock in deep mine[[M. S. Thesis][D]. Qingdao：Shandong University of Science and Technology，2020.(in Chinese))
[25]	ZHOU Y，WU Z，WENG L，et al. Seepage characteristics of chemical grout flow in porous sandstone with a fracture under different temperature conditions：An NMR based experimental investigation[J]. International Journal of Rock Mechanics and Mining Sciences，2021，142：104762.
[35]	郭玉. 高流态超早强注浆材料及其浆液扩散规律试验研究[博士学位论文][D]. 徐州：中国矿业大学，2019.(GUO Yu. Experimental study on the high flowability and super early strength grouting material and its slurry diffusion rule[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2019.(in Chinese))
[45]	李建，郑恺丹，轩大洋，等. 覆岩隔离注浆充填浆液无压阶段扩散规律实验研究[J]. 煤炭学报，2020，45(增1)：78-86.(LI Jian，ZHENG Kaidan，XUAN Dayang. Experimental study on slurry diffusion law during the non-pressure stage in overburden isolated grouting[J]. Journal of China Coal Society，2020，45(Supp.1)：78-86.(in Chinese))
[1]	薛翊国，孔凡猛，杨为民，等. 川藏铁路沿线主要不良地质条件与工程地质问题[J]. 岩石力学与工程学报，2020，39(3)：445-468. (XUE Yiguo，KONG Fanmeng，YANG Weimin，et al. Main unfavorable geological conditions and engineering geological problems along Sichuan—Tibet railway[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(3)：445-468.(in Chinese))
[3]	ZHANG J，LI S，LI Z，et al. Properties of red mud blended with magnesium phosphate cement paste：feasibility of grouting material preparation[J]. Construction and Building Materials，2020，260：119704.
[5]	ZHOU D，ZHAO Z，LI B，et al. Permeability evolution of grout infilled fractures subjected to triaxial compression with low confining pressure[J]. Tunnelling and Underground Space Technology，2020，104：103539.
[8]	张连震，张庆松，刘人太，等. 基于浆液-岩体耦合效应的微裂隙岩体注浆理论研究[J]. 岩土工程学报，2018，40(11)：2 003-2 011. (ZHANG Lianzhen，ZHANG Qingsong，LIU Rentai，et al. Grouting mechanism in fractured rock considering slurry-rock stress coupling effects[J]. Chinese Journal of Geotechnical Engineering，2018，40(11)：2 003-2 011.(in Chinese))
[9]	张庆松，张连震，张霄，等. 基于浆液黏度时空变化的水平裂隙岩体注浆扩散机制[J]. 岩石力学与工程学报，2015，34(6)：1 198-1 210.(ZHANG Qingsong，ZHANG Lianzhen，ZHANG Xiao，et al. Grouting diffusion in a horizontal crack considering temporal and spatial variation of viscosity[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(6)：1 198-1 210.(in Chinese))
[2]	ZHANG G，HUI S，LI W，et al. Experimental investigation on pouring aggregate to plug horizontal tunnel with flow water[J]. Water，2020，12(6)：1 763.
[4]	JORNE F，HENRIQUES F M A，BALTAZAR L G. Influence of super plasticizer，temperature，resting time and injection pressure on hydraulic lime grout injectability. Correlation analysis between fresh grout parameters and grout injectability[J]. Journal of Building Engineering，2015，4：140-151.
[6]	NIU J D，WANG B，FENG C，et al. Experimental research on viscosity characteristics of grouting slurry in a high ground temperature environment[J]. Materials，2020，13(14)：3 221.
[10]	阮文军. 基于浆液黏度时变性的岩体裂隙注浆扩散模型[J]. 岩石力学与工程学报，2005，24(15)：2 709-2 714.(RUAN Wenjun. Spreading model of grouting in rock mass fissures based on time-dependent behavior of viscosity of cement-based grouts[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(15)：2 709-2 714.(in Chinese))
[12]	罗平平，朱岳明，赵咏梅，等. 岩体灌浆的数值模拟[J]. 岩土工程学报，2005，27(8)：918-921.(LUO Pingping，ZHU Yueming，ZHAO Yongmei，et al. Numerical simulation of grouting in rock mass[J]. Chinese Journal of Geotechnical Engineering，2005，27(8)：918-921.(in Chinese))
[14]	宋国壮. 高速铁路岩溶地基复合注浆强化理论与路基稳定性研究[博士学位论文][D]. 北京：北京交通大学，2019.(SONG Guozhuang. Research on composite grouting reinforcement theory of Karst foundation and subgrade stability on high-speed railway[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2019.(in Chinese))
[7]	XU Z，MIAO Y，WU H，et al. Estimation of viscosity and yield stress of cement grouts at true ground temperatures based on the flow spread test[J]. Materials，2020，13(13)：2 939.
[16]	李术才，张霄，张庆松，等. 地下工程涌突水注浆止水浆液扩散机制和封堵方法研究[J]. 岩石力学与工程学报，2011，30(12)：2 377- 2 396.(LI Shucai，ZHANG Xiao，ZHANG Qingsong，et al. Research on mechanism of grout diffusion of dynamic grouting and plugging method in water inrush of underground engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(12)：2 377-2 396.(in Chinese))
[17]	张霄. 地下工程动水注浆过程中浆液扩散与封堵机制研究及应用[博士学位论文][D]. 济南：山东大学，2011.(ZHANG Xiao. Study on mechanism of slurry diffusion and sealing at the process of underground engineering moving water grouting and its application[Ph. D. Thesis][D]. Jinan：Shandong University，2011.(in Chinese))
[20]	张改玲，湛铠瑜，隋旺华. 水流速度对单裂隙化学注浆浆液扩散影响的试验研究[J]. 煤炭学报，2011，36(3)：403-406.(ZHANG Gailing，ZHAN Kaiyu，SUI Wanghua. Experimental investigation of the impact of flow velocity on grout propagation during chemical grouting into a fracture with flowing water[J]. Journal of China Coal Society，2011，36(3)：403-406.(in Chinese))
[27]	BOHLOLI B，MORGAN E K，GRØV E，et al. Strength and filtration stability of cement grouts at room and true tunnelling temperatures[J]. Tunnelling and Underground Space Technology，2018，71：193-200.
[30]	GUMMERSON R J，HALL C，HOFF W D，et al. Unsaturated water flow within porous materials observed by NMR imaging[J]. Nature，1979，281(5726)：56-57.
[37]	LI J，LIU H，AI K，et al. An NMR-based experimental study on the pore structure of the hydration process of mine filling slurry[J]. Advances in Civil Engineering，2018，2018：1-12.
[40]	刘浩杰. 水泥浆液颗粒絮凝效应及多孔介质可注性研究[硕士学位论文][D]. 济南：山东大学，2019.(LIU Haojie. Study on particles flocculation effect of cement slurry and injectability of porous media[M. S. Thesis][D]. Jinan：Shandong University，2019.(in Chinese))
[47]	杨红鲁. 裂隙岩体注浆作用下变形与加固机制及应用[硕士学位论文][D]. 济南：山东大学，2019.(YANG Honglu. Deformation and reinforcement mechanism of fractured rock mass under grouting and its application [M. S. Thesis][D]. Jinan：Shandong University，2019.(in Chinese))
[11]	郝哲，王介强，何修仁. 岩体裂隙注浆的计算机模拟研究[J]. 岩土工程学报，1999，21(6)：727-730.(HAO Zhe，WANG Jieqiang，HE Xiuren. Computerized simulation of crack grouting in rock mass[J]. Chinese Journal of Geotechnical Engineering，1999，21(6)：727-730.(in Chinese))
[13]	魏久传，韩承豪，张伟杰，等. 基于步进式算法的裂隙注浆扩散机制研究[J]. 岩土力学，2019，40(3)：913-925.(WEI Jiuchuan，HAN Chenghao，ZHANG Weijie，et al. Mechanism of fissure grouting based on step-wise calculation method[J]. Rock and Soil Mechanics，2019，40(3)：913-925.(in Chinese))
[15]	王强. 潞安矿区破碎煤岩体注浆加固技术研究及工程应用[博士学位论文][D]. 北京：煤炭科学研究总院，2018.(WANG Qiang. Grouting reinforcement technical study and engineering application of broken coal-rock mass in Lu¢an mining district[Ph. D. Thesis][D]. Beijing：China Coal Research Institute，2018.(in Chinese))
[21]	张庆松，张连震，刘人太，等. 水泥-水玻璃浆液裂隙注浆扩散的室内试验研究[J]. 岩土力学，2015，36(8)：2 159-2 168.(ZHANG Qingsong，ZHANG Lianzhen，LIU Rentai，et al. Laboratory experimental study of cement-silicate slurry diffusion law of crack grouting with dynamic water[J]. Rock and Soil Mechanics，2015，36(8)：2 159-2 168.(in Chinese))
[23]	王晓晨，刘人太，杨为民，等. 考虑水泥浆液析水作用的水平裂隙注浆扩散机制研究[J]. 岩石力学与工程学报，2019，38(5)：1 005-1 017.(WANG Xiaochen，LIU Rentai，YANG Weimin，et al. Study on grouting mechanism of horizontal fractures considering the bleeding of cement slurry[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(5)：1 005-1 017.(in Chinese))
[31]	吴志军，卢槐，翁磊，等. 基于核磁共振实时成像技术的裂隙砂岩渗流特性研究[J]. 岩石力学与工程学报，2021，40(2)：263-275.(WU Zhijun，LU Huai，WENG Lei，et al. Investigations on the seepage characteristics of fractured sandstone based on NMR real-time imaging[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：263-275.(in Chinese))
[33]	WENG L，WU Z，LIU Q. Evolutions of the unfrozen water content of saturated sandstones during freezing process and the freeze-induced damage characteristics[J]. International Journal of Rock Mechanics and Mining Sciences，2021，142：104757.
[41]	JIA H，DING S，WANG Y，et al. An NMR-based investigation of pore water freezing process in sandstone[J]. Cold Regions Science and Technology，2019，168：102893.
[43]	严健，何川，汪波，等. 雅鲁藏布江缝合带深埋长大隧道群岩爆孕育及特征[J]. 岩石力学与工程学报，2019，38(4)：769-781. (YAN Jian，HE Chuan，WANG Bo，et al. Inoculation and characters of rockbursts in extra-long and deep-lying tunnels located on Yarlung Zangbo suture[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(4)：769-781.(in Chinese))