隧道围岩喷护速凝增强效应试验研究及工程应用

doi:10.13722/j.cnki.jrme.2016.0049

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Abstract In tunnel construction，sprayed concrete as a necessary means of primary support plays an important role on the stability of tunnel surrounding rock control，and the quality and dosage of accelerator directly affect the shotcrete strength and the construction environment. Based on the accelerating mechanism of aluminate accelerator，a new high performance and low dosage of liquid accelerator is developed，The accelerator has good properties. for examples，the caustic ratio is less than 1.2，pH value is 9–1，the amount of solid is 65% and the solution is stable without precipitation. Through the analysis of the XRD and SEM and the related performance tests，the accelerator can effectively improve the degree of hydration of cement，and in a short time，form a large number of calcium silicate，which overlap each other to form crystal structure，and hence reduces the setting time. The suitable dosage of the liquid accelerator is 1.5%–3% of cement quality，while the sprayed concrete late strength loss within 10%. In the field application，a high precision and small flow rate of liquid accelerator adding device is developed to ensure the precise control of the dosage of liquid accelerator. The corresponding matching spraying technology was improved，which can effectively improve the shotcrete strength，reduce the dust and rebound in the construction，and therefore have good popularization and application value.

Key words： tunneling engineering surrounding rock support shotcrete liquid accelerator

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	Articles by authors
	ZHANG Luchen1
	LI Shuchen1
	LU Wei1
	2
	LI Shucai1
	LI Yuhui1

Cite this article:

ZHANG Luchen1,LI Shuchen1,LU Wei1, et al. Experimental study of quick setting enhancement effect of shotcrete in tunnel surrounding rock and its engineering application[J]. , 2016, 35(10): 2106-2114.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0049 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I10/2106

[1] 李洪泉，杨成永，徐明新，等. 隧道格栅钢架喷混凝土支护安全性评价[J]. 岩石力学与工程学报，2009，28(2)：3 903–3 908.(LI Hongquan， YANG Chengyong， XU Mingxin， et al. Assessment on safety of lattice girder reinforced shotcrete support for tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(2)： 3 903–3 908.(in Chinese))
[2] 李树忱，冯丙阳，马腾飞，等. 隧道格栅拱架喷射混凝土支护力学特性[J]. 煤炭学报，2014，39(增1)：57–63.(LI Shuchen，FENG Bingyang，MA Tengfei，et al. Mechanics behavior of lattice girder reinforced shotcrete support for tunnels[J]. Journal of china coal society，2014，39(Supp.1)：57–63.(in Chinese))
[3] 徐帮树，杨为民，王者超，等. 公路隧道型钢喷射混凝土初期支护安全评价研究[J]. 岩土力学，2012，33(1)：248–254.(XU Bangshu，YANG Weimin，WANG Zhechao，et al. Study of initial support safety evaluation about shape steel reinforced shotcrete in highway tunnel[J]. Rock and Soil Mechanics，2012，33(1)：248–254.(in Chinese))
[4] 韩斌，王贤来，文有道. 不良岩体巷道的湿喷混凝土支护技术[J]. 中南大学学报：自然科学版，2010，41(6)：2 381–2 385.(HAN Bin，WANG Xianlai，WEN Youdao. Drift support technology with wet shotcrete method in weak rock mass[J]. Journal of Central South University：Science and Technology，2010，41(6)：2 381–2 385.(in Chinese))
[5] 李宁，刘乃飞，李国峰. 软岩及土质隧洞围岩稳定性评价新方法[J]. 岩石力学与工程学报，2014，33(9)：1 812–1 821.(LI Ning，LIU Naifei，LI Guofeng. New method for stability evaluation of soil and soft rock tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1 812–1 821.(in Chinese))
[6] 王克忠，李仲奎，王玉培，等. 大型地下洞室断层破碎带变形特征及强柔性支护机制研究[J]. 岩石力学与工程学报，2013，32(12)： 2 455–2 462.(WANG Kezhong，LI Zhongkui，WANG Yupei，et al. Study of strong flexible supporting mechanism and deformation characteristics for fracture zone in large underground caverns[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(12)：2 455–2 462.(in Chinese))
[7] 李鹏飞，田四明，赵勇，等. 高地应力软弱围岩隧道初期支护受力特性的现场监测研究[J]. 岩石力学与工程学报，2013，32(增2)：3 509–3 519.(LI Pengfei，TIAN Siming，ZHAO Yong，et al. In-situ monitoring study of mechanical characteristics of primary lining in weak rock tunnel with high grostress[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 509–3 519.(in Chinese))
[8] 程良奎. 喷射混凝土[M]. 北京：中国建筑工业出版社，1990：13–20.(CHENG Liangkui. Shotcrete[M]. Beijing：China Architecture and Building Press，1990：13–20.(in Chinese))
[9] 关宝树. 隧道及地下工程喷混凝土支护技术[M]. 北京：人民交通出版社，2009：104–108.(GUAN Baoshu. Technique of shotcrete support for tunnel and underground works[M]. Beijing：China Communications Press，2009：104–108.(in Chinese))
[10] 潘志华，李付刚，闾文. 低碱液态速凝剂的性能及其促凝机制[J]. 化学建材，2008，24(2)：39–43.(PAN Zhihua，LI Fugang，LU Wen. Properties of liquid state low alkaline accelerator for portland cement and its mechanism of acceleration[J]. Chemical Building Materials，2008，24(2)：39–43.(in Chinese))
[11] 马井雨，马忠诚，汪澜，等. 无碱无氯液体速凝剂的性能及其作用机制[J]. 武汉理工大学学报，2012，34(12)：14–18.(MA Jingyu，MA Zhongcheng，WANG Lan，et al. Performance and mechanism of a new alkali-free and chloride-free liquid accelerator[J]. Journal of Wuhan University of Technology，2012，34(12)：14–18.(in Chinese))
[12] 李国新，李春梅，周文英，等. 影响铝酸钠液体速凝剂作用效果因素的研究[J]. 混凝土，2005，(7)：54–58.(LI Guoxin，LI Chunmei，ZHOU Wenying，et al. Factors affecting the liquid sodium aluminate accelerated agent[J]. Concrete，2005，(7)：54–58.(in Chinese))
[13] 张勇，何廷树，李国新，等. 合成工艺参数对铝酸盐液体速凝剂性能的影响[J]. 混凝土，2005，(4)：38–41.(ZHANG Yong，HE Tingshu，LI Guoxin，et al. The influences of synthetic technology parameters on the properties of liquid aluminate accelerating additive[J]. Concrete，2005，(4)：38–41.(in Chinese))
[14] 赵苏，郭兴华，夏义兵，等. 铝酸钠液体速凝剂性能及作用机制[J]. 沈阳建筑大学学报：自然科学版，2009，25(6)：1 125–1 130.(ZHAO Su，GUO Xinghua，XIA Yibing，et al. Study on the performance and mechanism of the liquid sodium aluminate accelerated agent[J]. Journal of Shenyang Jianzhu University：Natural Science，2009，25(6)：1 125–1 130.(in Chinese))
[15] 李国新，宋学锋，周文英，等. 几种协同增效组分对铝酸钠液体速凝剂作用效果的影响[J]. 混凝土，2005，(4)：49–51.(LI Guoxin，SONG Xuefeng，ZHOU Wenying，et al. Synergistic effects of some other ingredients on liquid sodium aluminate accelerated agent[J]. Concrete，2005，(4)：49–51.(in Chinese))
[16] 杨仁树，肖同社，刘波. RSD速凝剂增强作用机制分析[J]. 中国矿业大学学报，2006，35(2)：153–156.(YANG Renshu，XIAO Tongshe，LIU Bo. Analysis of strengthening mechanism of RSD rapid setting admixture[J]. Journal of China University of Mining and Technology，2006，35(2)：153–156.(in Chinese))
[17] PARK H G，SUNG S K，PARK C G，et al. Influence of a C12A7 mineral-based accelerator on the strength and durability of shotcrete[J]. Cement and Concrete Research，2008，38(3)：379–385.
[18] WON J P，HWANG U J，KIM C K，et al. Mechanical performance of shotcrete made with a high-strength cement-based mineral accelerator[J]. Construction and Building Materials，2013，49(12)：175–183.