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[1]张明天,陈结,姜德义,等.湿喷混凝土支护强度影响规律探究及改进*[J].中国安全生产科学技术,2021,17(9):25-31.[doi:10.11731/j.issn.1673-193x.2021.09.004]
　ZHANG Mingtian,CHEN Jie,JIANG Deyi,et al.Research on influence laws for support strength of wet shotcrete and improvement[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(9):25-31.[doi:10.11731/j.issn.1673-193x.2021.09.004]
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湿喷混凝土支护强度影响规律探究及改进*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年9期
页码:
25-31
栏目:
学术论著
出版日期:
2021-09-30

文章信息/Info

Title:
Research on influence laws for support strength of wet shotcrete and improvement
文章编号:
1673-193X(2021)-09-0025-07
作者:
张明天; 陈结; 姜德义; 侯克鹏; 孙伟; 刘磊
（1.重庆大学 资源与安全学院，重庆 400044；
2.昆明理工大学 国土资源工程学院，云南 昆明 650093；
3.云南省中-德蓝色矿山与特殊地下空间开发利用重点实验室，云南 昆明 650093）
Author(s):
ZHANG Mingtian;  CHEN Jie;  JIANG Deyi;  HOU Kepeng;  SUN Wei;  LIU Lei
(1.School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China;
2.School of Land and Resources Engineering,Kunming University of Technology,Kunming Yunnan 650093,China;
3.Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space,Kunming Yunnan 650093,China)
关键词:
湿喷混凝土; 抗压强度; 微观形貌; 水化产物; XRD
Keywords:
wet shotcrete;  compressive strength;  micro morphology;  hydration products;  XRD
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2021.09.004
文献标志码:
A
摘要:
为探究普朗铜矿湿喷混凝土技术应用中出现的喷层强度低、易开裂等问题原因，针对水灰比、养护温度2个因素对湿喷混凝土强度发展规律展开研究，采用扫描电子显微镜（SEM）观察湿喷混凝土的微观形貌、EDS和XRD进行物相分析。结果表明：温度是影响湿喷混凝土强度增长关键因素；水灰比越大，硬化水泥石浆体内孔隙越多，混凝土强度越低；温度和水灰比通过影响水化反应造成界面过渡区不同程度微缺陷，是影响混凝土强度根本原因。通过提高养护温度、优化配比及改进施工工艺，改进后喷层28 d强度提高约30%，生产效率提高约8%。
Abstract:
In order to explore the reasons for the low strength and easy cracking of the sprayed layer in the application of wet shotcrete technology in Pulang copper mine,the strength development of wet shotcrete was studied based on the two factors of water-cement ratio and curing temperature,and the scanning electron microscope ( SEM) was used to observe the micro morphology of wet shotcrete,as well as the EDS and XRD for the phase analysis.The results showed that the temperature was the key factor affecting the strength growth of wet shotcrete.The larger the water-cement ratio,the more pores in the hardened cement paste,and the lower the strength of concrete.The temperature and water-cement ratio were the fundamental factors affecting the strength of concrete by affecting the hydration reaction,resulting in different degrees of micro-defect in the interface transition zone.Through increasing the curing temperature,optimizing the proportion and improving the construction technology,the strength of improved spray layer was increased by about 40% after 28 days,and the production efficiency was increased by about 8%.

参考文献/References:

［1］刘勇，宋玉香.聚丙烯纤维网湿喷混凝土隧道衬砌的应用研究［J］.中国铁道科学，2006(5)：83-86. LIU Yong，SONG Yuxiang.Application research on tunnel lining of polypropylene net fiber shotcrete［J］.China Railway Science，2006(5)：83-86.
［2］邓宗伟，冷伍明，李志勇，等.喷混凝土边坡温度场与应力场耦合的有限元时效分析［J］.岩土力学，2009，30(4)：1153-1158. DENG Zongwei，LENG Wuming，LI Zhiyong，et al.Finite element analysis of time effect for coupled problem of temperature and stress fields in slope supported by shotcrete［J］.Rock and Soil Mechanics，2009，30(4)：1153-1158.
［3］DAVID S，BORIS W,SHIMON B.Principles of monitoring hardening and strengthening of shotcrete［J］.Journal of the Chinese Ceramic Society，2014，42(5)：568-573.
［4］王家滨，牛荻涛，马蕊，等.弯曲应力作用下喷射混凝土抗碳化性能研究［J］.四川大学学报(工程科学版)，2015，47(S1)：84-90. WANG Jiabin，NIU Ditao，MA Rui，et al.Influence of shotcrete carbonation resistance under bending stress［j］.Journal of Sichuan University (Advanced Engineering Sciences)，2015，47(S1)：84-90.
［5］曾鲁平，乔敏，王伟，等.速凝剂种类对钢纤维喷射混凝土力学及界面性能影响［J］.硅酸盐学报，2020，48(5)：659-664. ZENG Luping，QIAO Min，WANG Wei，et al.Mechanical and interface properties of steel fiber reinforced shotcrete containing different setting accelerators［J］.Journal of the Chinese Ceramic Society，2020，48(5)：659-664.
［6］CUI S A,LIU P,CUI E Q,et al.Experimental study on mechanical property and pore structure of concrete for shotcrete use in a hot-dry environment of high geothermal tunnels［J］.Construction and Building Materials，2018，173：124-135.
［7］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)：2381-2385. 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)：2381-2385.
［8］吴中伟.混凝土科学技术的反思［J］.混凝土及加筋混凝土，1988(6)：4-6. WU Zhongwei.Reflection on concrete science and technology［J］.Concrete，1988(6)：4-6.
［9］吴爱祥，孙伟，韩斌，等.温度对寒冷矿区湿喷支护强度影响及工程应用研究［J］.采矿与安全工程学报，2015，32(5)：697-705. WU Aixiang，SUN Wei，HAN Bin，et al.Study on the influence of temperature on the strength of wet shotcreting in cold mining areas＆its application［J］.Journal of Mining ＆ Safety Engineering，2015，32(5)：697-705.
［10］王巧，王祖琦，宋普涛，等.高强湿喷混凝土强度降低的原因探析与改进［J］.材料导报，2018，32(S2)：460-465，470. WANG Qiao，WANG Zuqi，SONG Putao，et al.Analysis on the strength reduction of high strength wet-mix shotcrete and modification［J］.Materials Reports，2018，32(S2)：460-465，470.
［11］姚松，韩斌，吴爱祥，等.温度对高寒矿山湿喷混凝土强度影响规律及工程应用研究［J］.采矿与安全工程学报，2017，34(2)：384-390. YAO Song，HAN Bin，WU Aixiang，et al.The effect of temperature on strength of wet shotcrete in cold mining areas and its engineering application［J］.Journal of Mining and Safety Engineering，2017，34(2)：384-390.
［12］赵金田，朱清云，石勇，等.高寒矿区湿喷混凝土支护应用研究［J］.金属矿山，2016(10)：21-25. ZHAO Jintian，ZHU Qingyun，SHI Yong，et al.Application research of wet shotcrete support in cold mining areas［J］.Metal Mine，2016(10)：21-25.
［13］胡玉琴，王殿生，赵洪磊，等.基于鱼骨图和层次分析法的石油静电事故影响因素分析［J］.中国安全生产科学技术，2015，11(1)：133-137. HU Yuqin,WANG Diansheng,ZHAO Honglei,et al.Analysis on influence factors of electrostatic accidents in oil industry based on fishbone diagram and AHP［J］.Journal of Safety Science and Technology,2015,11(1):133-137.
［14］管学茂，杨雷.混凝土材料学［M］.北京：化学工业出版社，2019.
［15］CHANG C S，YIN Z Y.Micromechanical modeling for inherent anisotropy in granular materials［J］.Journal of Engineering Mechanics，2010，136(7)：830-839.

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备注/Memo

备注/Memo:
收稿日期： 2020-11-18
* 基金项目： 国家自然科学基金项目（51964023）
作者简介： 张明天，博士研究生，主要研究方向为岩石力学及采矿。
通信作者： 侯克鹏，博士，教授，主要研究方向为岩石力学及采矿。
更新日期/Last Update: 2021-10-02