硅酸盐学报

纳米硅溶胶浆液胶凝时间的温度响应

作者：王鹏程李树忱赵世森李景龙李阳

单位：(山东大学齐鲁交通学院济南 250000)

分类号：TU94+3.1

出版年,卷(期):页码：2020,48(2):0-0

DOI：

摘要：

为研究纳米硅溶胶浆液在深部裂隙岩体注浆应用方面的基本特性，揭示材料胶凝时间的温度响应，开展了加速剂对胶凝时间的影响试验。结果表明，胶凝时间随加速剂浓度及温度的增长呈指数降低，得到了与温度相关的硅溶胶浆液胶凝时间公式，进一步推导了实时稠度与实时渗透长度公式，并给出了硅溶胶浆液的裂隙注浆设计思路：可先确定纳米硅溶胶浆液及加速剂掺量，再确定目标渗透长度及地层条件，最后根据渗透长度公式调节注浆压力并确定注浆时间。

基金项目：

“十三五”国家重点研发计划项目(2016YFC0600803)；国家自然科学基金资助项目(51879150)；国家自然科学基金资助项目(41831278)。

作者简介：

参考文献：

[1] Morris C A. Silica sol as a nanoglue: flexible synthesis of composite aerogels[J]. Science, 1999, 284(5414): 622–624.

[2] Henn R W, Soule N C. Ultrafine cement in pressure grouting[M]. Reston: American Society of Civil Engineers, 2010: 15.

[3] Persoff P, Finsterle S, Moridis G J, et al. Injectable barriers for waste isolation[R]. California: Office of Scientific & Technical Information Technical Reports, 1995.

[4] Bolisetti T, Reitsma S, Balachandar R. Experimental investigations of colloidal silica grouting in porous media[J]. J Geotech Geoenviron Eng, 2009, 135(5): 697–700.

[5] Gallagher P M, Conlee C T, Rollins K. Full-scale field testing of colloidal silica grouting for mitigation of liquefaction risk[J]. J Geotech Geoenviron Eng, 2007, 133(2): 186–196

[6] CHRISTIAN Butrón, GUSTAFSON G, ÅSA Fransson, et al. Drip sealing of tunnels in hard rock: a new concept for the design and evaluation of permeation grouting[J]. Tunnel Underground Space Tech, 2010, 25(2): 114–121.

[7] Funehag J, Fransson A. Sealing narrow fractures with a Newtonian fluid: Model prediction for grouting verified by field study[J]. Tunnel Underground Space Tech, 2006, 21(5): 492–498.

[8] Axelsson M. Mechanical tests on a new non-cementitious grout, silica sol: A laboratory study of the material characteristics[J]. Tunnel Underground Space Tech, 2006, 21(5): 554–560.

[9] FUNEHAG J, GUSTAFSON G. Design of grouting with silica sol in hard rock – New design criteria tested in the field, Part II[J]. Tunnel Underground Space Tech, 2008, 23(1): 9–17.

[10] EL TANI M, STILLE H. Grout spread and injection period of silica solution and cement mix in rock fractures[J]. Rock Mech Rock Eng, 2017, 50: 2365–2380.

[11] 赵海洋, 侍克斌. 化学灌浆在特殊地质中坝基防渗效果的试验研究[J]. 吉林水利, 2017(5): 9–11.

Zhao H Y, Shi K B. Jilin Water Resourc (in Chinese), 2017(5): 9–11.

[12] 卜思敏. 纳米硅溶胶固化黄土的强度特性及其固化机理[D]. 兰州市: 兰州大学, 2016.

BU S M. Strength characteristics and modification theory of loess modified by Nano silica sol [in Chinese, dissertation]. Lanzhou: Lanzhou University, 2016.

[13] 潘东江. 松散煤体的硅溶胶注浆渗透规律及长期固结稳定性研究[D]. 徐州市: 中国矿业大学, 2018.

PAN D J. Permeation law and long-term solidification stability evaluation in loose coal with silica sol grout [[in Chinese, dissertation]]. Xuzhou: China University of Mining and Technology, 2018.

[14] 谢和平. “深部岩体力学与开采理论”研究构想与预期成果展望[J]. 工程科学与技术, 2017, 49(2): 1–16.

Xie H P. Adv Eng Sci (in Chinese), 2017, 49(2): 1–16.

[15] Shen P, Hankins N, Jefferis S. Selection of colloidal silica grouts with respect to gelling and erosion behaviour[J]. Geosciences, 2017, 7(1): 1–12.

[16] Pedrotti M, Wong C, Mountassir G E, et al. An analytical model for the control of silica grout penetration in natural groundwater systems[J]. Tunnel Underground Space Tech, 2017, 70: 105–113.

[17] Dongjiang P, Nong Z, Chenghao Z, et al. Long-term mechanical behavior of nano silica sol grouting[J]. Nanomaterials, 2018, 8(46): 1–12.

[18] Funehag J, Gustafson G. Design of grouting with silica sol in hard rock–New methods for calculation of penetration length, Part I[J]. Tunnel Underground Space Tech, 2008, 23(1): 1–8.

[19] Tsuji M, Okihara M, Nakashima H, et al. Latest rock grouting technologies under sea water in Nordic countries and Japan[R]. Osaka:6th East Asia Forum on Radwaste Management Conference, 2017.

服务与反馈：

【文章下载】【加入收藏】