(1. School of Civil Engineering，Central South University，Changsha，Hunan 410075，China；2. School of Hydraulic Engineering，Changsha University of Science and Technology，Changsha，Hunan 410041，China；3. China Railway 14th Bureau Group Tunnel Engineering Co.，Ltd.，Jinan，Shandong 250000，China)
To evaluate the stability of filling grouting slurry，the slurry stability test device was designed. The slurry stability coefficient index was defined to quantitatively evaluate the stability of clay cement slurry and pure cement slurry under different grouting parameters. The influence of slurry stability on practical engineering was deduced，and the results were verified by practical engineering. The results show that the grouting parameters and strata conditions have significant impacts on the stability of pure cement slurry and clay cement slurry. Under the same condition，the stability of clay cement slurry is better than that of pure cement slurry. They are both negatively correlated with water solid ratio，and positively correlated with strata grouting pressure and drainage conditions. The slurry with better stability can provide a higher filling rate and its effective diffusion distance is relatively large，but its diffusion distance is relatively small. When the stability coefficient of the clay cement slurry is less than 83% or the stability coefficient of cement slurry is less than 71%，the shear failure along inclined plane occurseasily. In the practical filling grouting project，to ensure a better filling rate，it′s advised to choose slurry that with better stability and greatly match the relationship between hole spacing and slurry stability. Under critical strata condition，the slurry stability coefficients can be obtained by adjusting the slurry water-solid ratio and grouting pressure. The experimental results can provide some reference for filling grouting theory and practical engineering case.
童立元，刘松玉，方磊，等. 公路路基下伏煤矿采空区注浆处理设计计算方法探讨[J].岩土工程学报，2003，25(3)：374-376.(TONG Liyuan，LIU Songyu，FANG Lei，et al.Study on design and computation of grouting method applied to treat mined-out region under highway[J].Chinese Journal of Geotechnical Engineering，2003，25(3)：374-376.(in Chinese))
[2]
倪宏革，孙峰华，杨秀竹，等.采用黏土固化浆液进行岩溶路基注浆加固试验研究[J].岩石力学与工程学报，2005，24(7)：1242- 1247.(NI Hongge，SUN Fenghua，YANG Xiouzhu，et al. Experimental study of clay hardening grouts for Roadbed reinforcements[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(7)：1242-1247.(in Chinese))
[3]
KOYAMA Y，SATO Y，OKANO N，et al.Back-fill grouting model test for shield tunnel[J].Quarterly Reportof PTRI，1998，39(1)：35-39.
[4]
杨晓东.锚固与注浆技术手册[M].北京：中国电力出版社，2009：376.(YANG Xiaodong. Handbook of anchoring and grouting technology[M]. Beijing：China Electric Power Press，2009：376.(in Chinese))
[5]
张景秀.坝基防渗及灌浆技术[M].2版. 北京：中国水利水电出版社，2002：109.(ZHANG Jingxiu. Dam foundation seepage prevention and grouting technology[M].2nded. Beijing：China Water Conservancy and Hydropower Press，2002：109.(in Chinese))
[6]
纪午生，陈 伟，张应文，等.常用建筑材料试验手册[M].2版. 北京：中国建筑工业出版社，1986：35.(JI Wusheng，CHEN Wei，ZHANG Yingwen，etal. Commonly used building materials test manual[M].2nded. Beijing：China Building Industry Press，1986：35. (in Chinese))
[7]
田华祥，孙克栋，姜苏阳，等.小浪底大坝GIN法灌浆浆液的稳定性和流动性分析[J]. 广西水利水电，2001，2(10)：33-35.(TIAN Huaxiang，SUN Kedong，JIANG Suyang，et al.Stability and liquidity analysis of the grouting liquid by the GIN method in the Xiaolangdi main dam[J].GuangxiWater Resources and Hydropower Engineering，2001，2(10)：33-35.(in Chinese))
[8]
薛晓峰，马春晓. 湖泥-水泥混合浆液配比及其稳定性研究[J].现代矿业，2015，1(1)：180-182.(XUE Xiaofeng，MA Chunxiao. Study on mixing ratio and stability of mud and cement slurry[J].Modern Mining，2015，1(1)：180-182.(in Chinese))
[9]
RICKSTAL FV.Grout injection of masonry，scientific approach and modeling[Ph. D.Thesis][D]. Leuven：Katholieke Universiteit；2000.
[10]
BALTAZAR L G，HENRIQUES F M A，JORNE F. Optimisation of flow behaviour and stability of superplasticized fresh hydraulic lime grouts through design of experiments[J]. Construction andBuilding Materials，2012，35(10)：838-845.
[11]
姜玉松，陈丽华.利用废弃钻井泥浆作为注浆浆液的试验研究[J]. 安徽理工大学学报：自然科学版，2011，31(4)：28-32.(JANG Yusong，CHEN Lihua. Test of using waste drilling slurry as grouting slurry[J].Journal of Anhui University：Science and Technology，2011，31(4)：28-32.(in Chinese))
[12]
聂琼，姜玉松. 纯水泥浆液稳定性试验研究[C]// 2009年地基基础工程与锚固注浆技术研讨会论文集. [S. l.]：[s. n.]，2009：4.(NIE Qiong，JIANG Yusong. Experimental study on stability of pure cement slurry[C]//Proceedingsof 2009 Foundation Engineering and Anchoring Grouting Technology Symposium. [S. l.]：[s. n.]，2009：4.(in Chinese))
[13]
单光炎，葛黎明，徐向前，等. 一种预应力压浆浆液稳定性的检测工具及其使用方法[P].中国：201110298654.3，2011-09-28.(Dan Guang Yan，Ge liming，Xu Xiang，et al. A detection tool for the stability of prestressed grouting slurry and its application method[P]. China：201110298654.3，2011-09-28.(in Chinese))
[14]
REDDI L N，BONALA M V S. Analytical solution for fine particle accumulation in soil filters[J].Journal of Geotechnical and Geo-environmental Engineering，ASCE ，1997，123(12)：1143-1152.
[15]
房 凯，夏唐代，包柳青，等. 考虑滤过效应的卵砾石层浆液扩散研究[J]. 岩石力学与工程学报，2013，32(7)：1 443-1 448.(FANG Kai，XIA Tangdai，BAO Liuqing，et al. Cement grout dispersion considering filtration in gravel[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(7)：1 443-1 448.(in Chinese))
[16]
徐润，左永江. 黏土水泥浆性能及其堵水机制的研究[J]. 煤炭学报，1996，21(6)：54-58.(XU Run，ZUO Yongjiang. Properties of clay-cement grout and mechanism of water control[J]. Journal of China Coal Society，1996，21(6)：54-58.(in Chinese))
[17]
阮文军，张恒志.水泥-黏土稳定浆液的试验研究[J]. 长春工程学院学报：自然科学版，2003，4(4)：5-7.(RUAN Wenjun，ZHANG Hengzhi. Experimental research on cement-bentonite stable grout[J].
Jouranl of Changchun Institute of Technology：Natural Science，2003，4(4)：5-7.(in Chinese))
[18]
王星华. 黏土固化浆液固结过程的SEM研究[J].岩土工程学报，1999，21(1)：34-40.(WANG Xinghua.SEM study of hardening processes of clay-hardening grout[J]. Chinese Journal of GeotechnicalEngineering，1999，21(1)：34-40.(in Chinese))
2018, Vol. 37 
