郭辉,吴斌平,王佳俊,殷亮,任炳昱,魏海宁

• 1:天津大学水利工程仿真与安全国家重点实验室
• 2:中国电建集团华东勘测设计研究院有限公司

摘要(Abstract)：

针对目前常见的裂隙岩体灌浆数值模拟研究多采用固定灌浆压力和水灰比与现有的变压变浆施工工艺不符,且现有研究中裂隙网络建模精度较低,导致数值模拟与实际灌浆结果存在较大差异的问题,提出了考虑变压变浆的三维精细裂隙网络灌浆数值模拟方法。通过引入相关一致性准则对拉丁超立方抽样进行改进,降低裂隙参数模拟过程的随机性,以提高裂隙网络的精度;进一步地,提出一种考虑变压变浆多孔分序灌浆模拟方法,通过实时统计模拟过程中灌浆孔内流量和累计注浆量的变化,根据规范对灌浆压力和浆液水灰比进行动态调节,实现灌浆过程精细化模拟。以杨房沟水电站帷幕灌浆工程为例进行案例分析,结果表明:与传统灌浆数值模拟相比,本文提出的模拟方法得到的浆液扩散半径更大,最终形成的灌浆帷幕范围更大更完整,且注灰量预测精度更高。相较于传统多孔分序灌浆模拟,该方法精度提高一倍以上,表明所提方法更具优越性。

关键词(KeyWords)： 灌浆工程;数值模拟;岩体裂隙网络建模;变压变浆;多孔分序灌浆

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2018YFC0406704)

作者(Author): 郭辉,吴斌平,王佳俊,殷亮,任炳昱,魏海宁

DOI: 10.13928/j.cnki.wrahe.2021.11.011

参考文献(References)：

• [1] 李玖芳，孙钊.大坝基础灌浆[M].北京：水利电力出版社，1976.LI Jiufang,SUN Zhao.Dam foundation grouting [M].Beijing:Water Conservancy and Electric Power Press,1976.
• [2] 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.
• [3] 杨米加，贺永年，陈明雄.裂隙岩体网络注浆渗流规律[J].水利学报，2001,32(7):41-46.YANG Mijia,HE Yongnian,CHEN Mingxiong.Law of grouting penetrating through fracture network of rock mass[J].Journal of Hydraulic Engineering,2001,32(7):41-46.
• [4] 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.
• [5] 李瑞金.三维随机裂隙坝基岩体灌浆数值模拟研究[D].天津：天津大学，2017.LI Ruijin.Three-dimensional numerical simulation of grouting in stochastic fracture network of dam bedrock[D].Tianjin:Tianjin University,2017.
• [6] 朱明听，张庆松，李术才，等.劈裂注浆加固土体的数值模拟和试验研究[J].中南大学学报(自然科学版),2018,49(5):1213-1220.ZHU Mingting,ZHANG Qingsong,LI Shucai,et al.Numerical simulation and experimental study on soil split grouting reinforcement mechanism [J].Journal of Central South University (Science and Technology),2018,49(5):1213-1220.
• [7] 刘人太，张连震，张庆松，等.速凝浆液裂隙动水注浆扩散数值模拟与试验验证[J].岩石力学与工程学报，2017,36(S1):3297-3306.LIU Rentai,ZHANG Lianzhen,ZHANG Qingsong,et al.Numerical simulation of crack grouting process of quick setting slurry with running water and its experimental verification[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(S1):3297-3306.
• [8] 周军霞，陆劲松，张玉，等.考虑浆液黏时变性渗透注浆理论计算公式[J].材料科学与工程学报，2019,37(5):758-762.ZHOU Junxia,LU Jinsong,ZHANG Yu,et al.Calculation formula of permeation grouting considering slurry variation[J].Journal of Materials Science and Engineering,2019,37(5):758-762.
• [9] 邓韶辉，王晓玲，敖雪菲，等.大坝基岩帷幕宾汉姆浆液灌浆的三维数值模拟[J].水利学报，2016,47(2):165-172.DENG Shaohui,WANG Xiaoling,AO Xuefei,et al.Three-dimensional numerical simulation of curtain grouting in the dam bedrock based on binghamian grouts[J].Journal of Hydraulic Engineering,2016,47(2):165-172.
• [10] YANG Ping,SUN Xueqing.Single fracture grouting numerical simulation based on fracture roughness in hydrodynamic environment [J].Electronic Journal of Geotechnical Engineering,2015,20(1):59-67.
• [11] LI Shucai,PAN Dongdong,XU Zhenhao,et al.Numerical simulation of dynamic water grouting using quick-setting slurry in rock fracture:the Sequential Diffusion and Solidification (SDS) method[J].Computers and Geotechnics,2020,122:103497.
• [12] 王东亮，郝兵元，梁晓敏.基于流固耦合的单一裂隙浆液扩散规律研究[J].采矿与岩层控制工程学报，2021(1):1-9.WANG Dongliang,HAO Bingyuan,LIANG Xiaomin.Slurry diffusion of single fracture based on fluid-solid coupling[J].Journal of Mining and Strata Control Engineering,2021(1):1-9.
• [13] OMID S,HAKAN S,SEYED R T.Numerical and analytical analyses of the effects of different joint and grout properties on the rock mass groutability [J].Tunneling and Undergroung Space Technology,2013,38:11-25.
• [14] 王晓玲，刘长欣，李瑞金，等.大坝基岩单裂隙灌浆流固耦合模拟研究[J].天津大学学报(自然科学与工程技术版),2017,50(10):1037-1046.WANG Xiaoling,LIU Changxin,LI Ruijin,et al.Fluid-solid coupling simulation of single fracture grouting in dam bedrock[J].Journal of Tianjin University (Natural Science and Engineering),2017,50(10):1037-1046.
• [15] ZHU Y,WANG X,DENG S,et al.Grouting process simulation based on 3D fracture network considering fluid-structure interaction[J].Applied Sciences,2019,9(4):667.
• [16] 刘鹏.基于改进拉丁超立方重要抽样方法的结构可靠性分析[D].广州：暨南大学，2016.LIU Peng.Structural reliability analysis (SRA) based on improved Latin hypercube important sampling[D].Guangzhou:Jinan University,2016.
• [17] 岳攀，钟登华，吴含，等.基于LHS的坝基岩体三维裂隙网络模拟[J].水力发电学报，2016,35(10):93-102.YUE Pan,ZHONG Denghua,WU Han,et al.Simulations of 3-D fracture networks in rock mass of dam foundation using Latin hypercube sampling[J].Journal of Hydroelectric Engineering,2016,35(10):93-102.
• [18] 中国水电基础局有限公司.水工建筑物水泥灌浆施工技术规范：DL/T 5148-2012[S].北京：中国电力出版社，2012.Sinohydro Foundation Engineering Co.,Ltd..Technical code for cement grouting construction of hydraulic structures:DL/T 5148-2012[S].Beijing:China Electric Power Press,2012.
• [19] 石崇，褚卫江，郑文棠.块体离散元数值模拟技术及工程应用[J].岩土力学，2017,38(S1):298.SHI Chong,CHU Weijiang,ZHENG Wentang.Block discrete element numerical simulation technology and engineering application[J].Rock and Soil Mechanics,2017,38(S1):298.
• [20] 李瑞金，赵梦琦，王晓玲，等.基于三维随机裂隙网络的坝基多孔分序灌浆数值模拟[J].水力发电，2017,43(5):64-69.LI Ruijin,ZHAO Mengqi,WANG Xiaoling,et al.Numerical simulation of multi-hole sequence grouting of dam bedrock based on three-dimensional stochastic fracture network [J].Hydropower,2017,43(5):64-69.