Simulation analysis of soil compacting effect by membrane bag polymer grouting
LI Xiaolong1, 2, WANG Ge1, 2, LI Lulu3, SHI Mingsheng1, 2, ZHONG Yanhui1, 2, ZHANG Bei1, 2, WANG Fuming1, 2
(1. School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, Henan 450001, China; 2. National Key Laboratory of Tunnel Boring Machine and Intelligent Operation and Maintenance, Zhengzhou, Henan 450001, China;
3. Yellow River Engineering Consulting Co., Ltd., Zhengzhou, Henan 450003, China)
Abstract：This study investigates the compaction mechanism of membrane bag polymer grouting in soil by establishing a two-dimensional simulation method that integrates the modified Cam-clay model with polymer chemical reaction theory and the finite element method. The reliability of this method is validated through comparisons of experimental results and simulated outcomes regarding the size, density, and soil squeezing pressure of pile-shaped solids under various conditions. Based on these comparisons, the time-history variations in volume, density, expansion pressure, and other parameters of the polymer solid are analyzed, along with the spatiotemporal characteristics of soil stress, density, and void ratio during soil compaction. Furthermore, the effects of grouting quantity, preheating temperature, and soil density on expansion and reinforcement outcomes are examined. The results indicate that upon injection into the bag, the polymer slurry reacts rapidly, expanding and compressing the surrounding soil, which enlarges the grouting hole. The stress and density of the soil adjacent to the hole progressively increase, while the void ratio decreases. Additionally, as the distance from the center of the grouting hole increases, the effect of soil compaction gradually diminishes, with soil parameters outside of approximately six times the pile diameter largely returning to their initial state. The final diameter and density of the polymer solid increase with the amount of grouting, thereby enhancing the soil reinforcement effect. An increase in preheating temperature accelerates both the expansion rate of the polymer and the compaction process; however, it does not significantly affect the final reinforcement outcome. Denser soil surrounding the hole results in a smaller final diameter and greater density of the polymer solid. Under varying working conditions, the expansion pressure of the grout is zero in the early stage, experiences approximately linear rapid growth in the middle stage, and subsequently shows a decreasing growth rate that stabilizes in the late stage. The work presented in this paper provides a reference for further research on the mechanisms of soil compaction through membrane bag polymer grouting.
周 攀，李镜培，李 亮，等. 结构性黄土排水柱孔扩张问题弹塑性解析[J]. 岩石力学与工程学报，2021，40(1)：175-186.(ZHOU Pan，LI Jingpei，LI Liang，et al. Elastic-plastic solution for drained cylindrical cavity expansion in structured loess[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(1)：175-186.(in Chinese))
[2]
张 聪，阳军生，谢亦朋，等. 非均质软弱围岩隧道注浆加固圈分布特性[J]. 交通运输工程学报，2019，19(3)：58-70.(ZHANG Cong，YANG Junheng，XIE Yipeng，et al. Distribution characteristics of grouting reinforcement ring for tunnel with heterogeneous weak surrounding rock[J]. Journal of Traffic and Transportation Engineering，2019，19(3)：58-70. (in Chinese))
[3]
石明生，王复明，刘 恒，等. 堤坝高聚物定向劈裂注浆试验与有限元模拟[J]. 水利学报，2016，47(8)：1 087-1 092.(SHI Mingsheng，WANG Fuming，LIU Heng，et al. Finite-element simulation and experiment on polymer directional fracturing and grouting for dykes and dams[J]. Journal of Hydraulic Engineering，2016，47(8)：1 087- 1 092.(in Chinese))
[4]
胡焕校，周 丁，李忠诚. 基于ANSYS的压密注浆桩半径与注浆压力关系的研究[J]. 水资源与水工程学报，2015，26(6)：197-201.(HU Huanxiao，ZHOU Ding，LI Zhongcheng，et al. Study on relationship between radius of compaction grouting pile and grouting pressure based on ANSYS[J]. Journal of Water Resources and Water Engineering，2015，26(6)：197-201.(in Chinese))
[5]
周子龙，赵云龙，陈 钊，等. 基于颗粒流方法的土体压密注浆细观机制[J]. 中南大学学报：自然科学版，2017，48(2)：465-472.(ZHOU Zilong，ZHAO Yunlong，CHEN Zhao，et al. Meso- mechanism of compaction grouting in soil based on particle flow method[J]. Journal of Central South University：Science and Technology，2017，48(2)：465-472.(in Chinese))
[6]
WU Y，ZHAO C，ZHAO C F，et al. Modeling of compaction grouting considering the soil unloading effect[J]. International Journal of Geomechanics，2022，22(6)：04022061.
[7]
邬 泽，顾福霖，付艳斌. 采用压密注浆定量纠偏运营地铁盾构隧道技术研究[J]. 现代隧道技术，2023，60(2)：185-193.(WU Ze，GU Fulin，FU Yanbin，et al. Quantitative deviation correction technologies for subway shield tunnels in operation through compaction grouting[J]. Modern Tunnelling Technology，2023， 60(2)：185-193.(in Chinese))
[8]
WANG L，ZHENG G. Numerical analysis of underground displacements stirred by compaction grouting during tunnel construction[J]. Tunnelling and Underground Space Technology，2024，152：105931.
[9]
邢海鹏，吴光华，王 格，等. 基于修正剑桥模型的土体压密注浆机制分析[J]. 郑州大学学报：工学版，2025，46(4)：121-128.(XING Haipeng，WU Guanghua，WANG Ge，et al. Mechanism analysis of soil compaction grouting based on modified Cam-Clay model[J]. Journal of Zhengzhou University：Engineering Science，2025，46(4)：121-128.(in Chinese))
[10]
唐 瑶，李碧清，肖先念，等. 高聚物注浆技术在城市污水管道修复中的应用[J]. 净水技术，2015，34(6)：90-93.(TANG Yao，LI Biqing，XIAO Xiannian，et al. Application of polymer grouting technology for urban sewage pipeline rehabilitation[J]. Water Purification Technology，2015，34(6)：90-93.(in Chinese))
[11]
王复明，李 嘉，石明生，等. 堤坝防渗加固新技术研究与应用[J]. 水力发电学报，2016，35(12)：1-11.(WANG Fuming，LI Jia，SHI Mingsheng，et al. New seepage-proof and reinforcing technologies for dikes and dams and their applications[J]. Journal of Hydroelectric Engineering，2016，35(12)：1-11.(in Chinese))
[12]
王复明，范永丰，郭成超，等. 非水反应类高聚物注浆渗漏水处治工程实践[J]. 水力发电学报，2018，37(10)：1-11.(WANG Fuming，FAN Yongfeng，GUO Chengchao，et al. Practice of non-water- reacting polymer grouting treatment to seepage[J]. Journal of Hydroelectric Engineering，2018，37(10)：1-11.(in Chinese))
[13]
LI B，WANG F M，FANG H Y，et al. Experimental and numerical study on polymer grouting pretreatment technology in void and corroded concrete pipes[J]. Tunnelling and Underground Space Technology，2021，113：103842.
[14]
石明生，李禄禄，夏洋洋，等. 高聚物布袋桩加固淤泥质软土地基模型试验[J]. 铁道科学与工程学报，2020，17(9)：2 235-2 242. (SHI Mingsheng，LI Lulu，XIA Yangyang，et al. Model test of reinforcing silty soft soil with polymer bag grouting pile[J]. Journal of Railway Science and Engineering，2020，17(9)：2 235-2 242.(in Chinese))
[15]
石明生，李禄禄，夏洋洋，等. 高聚物布袋注浆桩成桩规律试验研究[J]. 长江科学院院报，2021，38(5)：75-81.(SHI Mingsheng，LI Lulu，XIA Yangyang，et al. Experimental research on polymer grouting bag pile[J]. Journal of Changjiang River Scientific Research Institute，2021，38(5)：75-81.(in Chinese))
[16]
李启月，吴正宇，张电吉. 饱和软黏土路基中布袋注浆桩的挤土效应[J]. 西南交通大学学报，2018，53(5)：1 026-1 032.(LI Qiyue，WU Zhengyu，ZHANG Dianji，et al. Soil compaction effect of bagged grouting piles in saturated soft clay subgrade[J]. Journal of Southwest Jiaotong University，2018，53(5)：1 026-1 032.(in Chinese))
[17]
彭仪普，汤致远，邓湘洋，等. 布袋注浆桩复合地基固结方程解析解[J]. 沈阳建筑大学学报：自然科学版，2023，39(4)：604-614. (PENG Yipu，TANG Zhiyuan，DENG Xiangyang，et al. Analytical solution of consolidation equation of composite foundation considering bag grouting pile[J]. Journal of Shenyang Jianzhu University：Natural Science，2023，39(4)：604-614.(in Chinese))
[18]
李晓龙，陈 灿，贾赫扬，等. 考虑化学反应的聚氨酯高聚物浆液膨胀机制试验与数值模拟研究[J]. 铁道科学与工程学报，2023，20(11)：4 163-4 173.(LI Xiaolong，CHEN Can，JIA Heyang，et al. Expansion mechanism of polymer considering chemical reactions：Experiment and numerical simulation[J]. Journal of Railway Science and Engineering，2023，20(11)：4 163-4 173.(in Chinese))
[19]
BASER S A，KHAKHAR D V. Modeling of the dynamics of water and R-11 blown polyurethane foam formation[J]. Polymer Engineering and Science，1994，34(8)：642-649.
[20]
SEO D J，YOUN J R. Numerical analysis on reaction injection molding of polyurethane foam by using a finite volume method[J]. Polymer，2005，46(17)：6 482-6 493.
2025, Vol. 44 
