Abstract：To address the issue of potential secondary damage to the original rock mass caused by increased grouting pressure in traditional grouting methods, a negative-pressure-assisted grouting technique for reinforcing micro-fractures is proposed. This method, building upon conventional grouting practices, involves applying negative pressure to micro-fractures or distant ends, thereby increasing the pressure differential between the grouting end and the fracture end without raising the grouting pressure itself. This approach accelerates the grout flow rate and enhances the efficiency of grouting reinforcement. The research established planar and two-dimensional models and constructed a negative-pressure-assisted grouting experimental system. Additionally, numerical simulations were conducted using COMSOL Multiphysics software to investigate the mechanisms of grout diffusion and the dynamic response characteristics of internal pressure by comparing experimental results with simulation data. The findings indicate that applying negative pressure at specific locations results in a pressure reduction at those sites, thereby creating an enhanced pressure differential between the grouting end and the negative-pressure application end. This drives the rapid and efficient movement of grout towards the negatively pressured area, significantly accelerating the filling speed of grout within complex fracture networks and effectively expanding the filling range. Furthermore, it was discovered that maintaining a ratio of grouting pressure to negative pressure between 1:1 and 3:1 can effectively enlarge the grout diffusion range during injection. This strategy broadens the diffusion range of the grout throughout the grouting process, thereby further improving the effectiveness and quality of grouting. The study of negative-pressure-assisted technology in enhancing grout diffusion effectiveness will provide novel ideas and methods for grouting reinforcement in fractured rock masses.
卢海峰1，2，贺泽澳1，张 凯1，马名天1. 一种负压辅助注浆方法及其扩散规律研究[J]. 岩石力学与工程学报, 2025, 44(8): 1988-2006.
LU Haifeng1, 2, HE Zeao1, ZHANG Kai1, MA Mingtian1. A negative pressure assisted grouting method and its diffusion patterns. , 2025, 44(8): 1988-2006.
GUNTRAM I，RICHARD G，GUNTRAM I，et al. Pressure shafts of hydro power plants-Bridging a single fissure in the rock mass[J]. Geomechanics and Tunnelling，2022，15(6)：821-841.
[2]
ZHAO P Z，LIU X Y，ZUO J Q，et al. Research on the strength prediction for pervious concrete based on design porosity and water-to-cement ratio[J]. Reviews on Advanced Materials Science，2024，63(1)：20220335.
[3]
HU H X，GAN B Q，DENG C，et al. Experimental study on the effect of water-cement ratios on the diffusion behavior of sand soil grouting[J]. Bulletin of Engineering Geology and the Environment，2024，83(3)：80.
[4]
DONG H J，CHEN X，YANG G Y，et al. Rheological model of cement-based material slurry with different water-cement ratio and temperature[J]. Multidiscipline Modeling in Materials and Structures，2024，20(1)：159-177.
[5]
BAI W F，GENG Y，YUAN C Y，et al. Study on mechanical properties and mesoscopic damage mechanism of metakaolin modified recycled aggregate concrete[J]. Developments in the Built Environment，2024，17(1)：100332.
[6]
LI C X，GUO Z W，WANG P. Variation of negative vacuum pressure in vertical drains with time and depth under variable well resistance[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2024，48(5)：1 530-1 549.
[7]
JIANG H T，LU W，LUO W，et al. Basalt fiber as natural reinforcement to improve the performance of ecological grouting slurry for the conservation of earthen sites[J]. Reviews on Advanced Materials Science，2023，62(1)：20230139.
[8]
WU L J，WU Z J，WENG L，et al. Investigation on basic properties and microscopic mechanisms of polyacrylate latex modified cement grouting material for water blocking and reinforcement[J]. Construction and Building Materials，2023，409(1)：133872.
[9]
ZHU X，CHEN Z，GUAN Y F，et al. Field test on the mechanism of composite bucket foundation penetrating sandy silt overlying clay[J]. Ocean Engineering，2023，288(P2)：116102.
[10]
姜明伟，梁运涛，冯文彬，等. 弱动力扰动作用下岩石微裂隙演化特征及灾害防控[J]. 煤田地质与勘探，2024，52(10)：166-176.(JIANG Mingwei，LIANG Yunwei，FENG Wenbin，et al. Evolutionary characteristics of microcracks in rocks under weak dynamic disturbance and disaster prevention and control[J]. Coal Geology and Exlporation，2024，52(10)：166-176.(in Chinese))
[11]
WANG F，ZHANG J，QIN X，et al. Diffusion mechanism of fracture grouting in rock mass with flowing water[J]. Alexandria Engineering Journal，2024，105(1)：44-55.
[12]
XIANG Z，ZHANG N，PAN D J，et al. Development and performance characterization of a composite grouting material suitable for sealing and reinforcement of microcracked mudstone[J]. Journal of Materials Research and Technology，2023，26(1)：3 726-3 743.
[13]
张连震，黄长鑫，张庆松，等. 基于速凝浆液流-固相变特性的裂隙岩体注浆扩散机制[J]. 岩石力学与工程学报，2024，43(5)： 1 190-1 203.(ZHANG Lianzhen，HUANG Changxin，ZHANG Qinsong，et al. Rock fissure grouting diffusion mechanism of quick-setting grout considering fluid-solid phase transition characteristics[J]. Chinese Journal of Rock Mechanics and Engineering，2024，43(5)：1 190-1 203.(in Chinese))
[14]
黄献文，赵光明，黄顺杰，等. 基于堆积颗粒几何特征的多尺度渗透注浆扩散半径预测[J]. 岩石力学与工程学报，2023，42(8)： 2 028-2 040.(HUANG Xianwen，ZHAO Guangming，HUANG Shunjie，et al. Multiscale penetration grouting radius prediction based ongeometric characteristics of stacked particles[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(8)：2 028-2 040.(in Chinese))
[15]
LU H F，QIU J K，KONG X X，et al. Experimental study on temperature characterization during cement grouting reinforcement[J]. Case Studies in Thermal Engineering，2023，41(1)：102577.
[16]
张贵金，肖 通，张 聪，等. 松散地层脉动与稳压灌浆室内试验研究[J]. 水文地质工程地质，2016，43(5)：87-93.(ZHANG Guijin，XIAO Tong，ZHANG Cong，et al. An indoor experimental study of loose soil strata pulsating and regulated filling[J]. Hydrogeology and Engineering Geology，2016，43(5)：87-93.(in Chinese))
[17]
彭 劼，黄慕凡，谢高强，等. 微生物诱导碳酸钙沉积加固土体的注浆方法[J]. 河海大学学报：自然科学版，2019，47(3)：259-264.(PENG Jie，HUANG Mufan，XIE Gaoqiang，et al. Grouting method of MlCP-treated soil[J]. Journal of Hohai University：Natural Science，2019，47(3)：259-264.(in Chinese))
[18]
吕 鑫，杨 科，方珏静，等. 采空区破碎岩体负压注浆加固试验研究与机制分析[J]. 岩石力学与工程学报，2023，42(增2)： 4 174-4 188.(LYU Xin，YANG Ke，FANG Juejing，et al. Experimental study and mechanism analysis of negative pressure grouting reinforcement for broken rock mass in goaf[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(Supp.2)：4 174-4 188.(in Chinese))
[19]
邓洪亮，王守凡，李小鹏. 饱和承压水砂层排水诱导驱替注浆技术研究[J]. 隧道建设：中英文，2022，42(2)：215-223.(DENG Hongliang，WANG Shoufan，Ll Xiaopeng. Drainage-induced displacement grouting technology in saturated confined water sand layers[J]. Tunnel Construction，2022，42(2)：215-223.(in Chinese))
[20]
蔡 忍，何 宁，张桂荣，等. 北疆地区风积沙注浆加固技术研究[J]. 水利与建筑工程学报，2022，20(1)：85-90.(CAI Ren，HE Ning，ZHANG Guirong，et al. Experimental study and mechanism analysis of negative pressure grouting reinforcement for broken rock mass in goaf[J]. Journal of Water Resources and Architectural Engineering，2022，20(1)：85-90.(in Chinese))
张培森，李腾辉，赵成业，等. 裂隙岩体室内模拟注浆加固试验系统设计及应用[J]. 煤炭工程，2021，53(10)：122-125.(ZHANG Peisen，Ll Tenghui，ZHAO Chengye，et al. Design and application of indoor simulated grouting reinforcement test system for fractured rock mass[J]. Coal Engineering，2021，53(10)：122-125.(in Chinese))
[23]
张 聪，梁经纬，张 箭，等. 基于脉动注浆的宾汉流体渗透扩散机制研究[J]. 岩土力学，2018，39(8)：2 740-2 746.(ZHANG Cong，LIANG Jingwei，ZHANG Jian，et al. Mechanism of Bingham fluid permeation and diffusion based on pulse injection[J]. Rock and Soil Mechanics，2018，39(8)：2 740-2 746.(in Chinese))
[24]
张 聪，梁经纬，阳军生，等. 考虑区间分布的幂律流体脉动渗透注浆扩散机制研究[J]. 岩土工程学报，2018，40(11)：2 120- 2 128.(ZHANG Cong，LIANG Jinwei，YANG Junsheng，et al. Diffusion mechanism of pulsating seepage grouting slurry with power-law fluid considering interval distribution[J]. Chinese Journal of Geotechnical Engineering，2018，40(11)：2 120-2 128.(in Chinese))
[25]
LIU T，PENG X，DAI Q，et al. Role of the preferential flow at rock-soil interface in the water leaking process in near-surface fissures filled with soils in the karst rock desertification area[J]. Applied Water Science，2022，12(9)：208.
[26]
WANG W，LI Z，XU J，et al. Evolution mechanism of water-conducting fissures in overlying rock strata with karst caves under the influence of coal mining[J]. Geofluids，2022，2022(1)：4064759.
2025, Vol. 44 
