滨海岩溶注浆充填体性能研究

doi:10.6040/j.issn.1672-3961.0.2022.058

摘要/Abstract

摘要： 为研究海水侵蚀作用下充填材料的服役性能,对试样进行单轴抗压强度和低场核磁测试,研究了质量分数为5%的SO^2-₄和质量分数为3.5%的Cl^-侵蚀下充填材料的变化规律,揭示不同侵蚀离子对石灰石尾矿基充填材料力学性能的影响。试验结果表明:Cl^-和SO^2-₄对石灰石尾矿基充填材料抗压强度具有提升作用,随着Cl^-和SO^2-₄质量分数的增加,充填材料孔径及孔隙率均呈现减小的趋势,结石体中少害孔的个数随着养护龄期的增加而逐渐增多,多害孔的个数减少。在侵蚀条件下SO^2-₄和Cl^-对充填材料中硅铝质组分的水化反应具有促进作用,C-S-A-H凝胶和N-C-S-A-H凝胶增多,生成的水化产物充填了孔隙,使结构更加密实;同时SO^2-₄可与水化产物C-S-A-H凝胶发生反应,生成钙矾石,充实孔隙,使孔隙率减小。研究成果对滨海岩溶充填工程服役性能评价具有一定指导作用。

关键词: 滨海岩溶, 石灰石尾矿基充填材料, 离子侵蚀, 力学性能, 微观结构

中图分类号:

TU52

周勇,李召峰,左志武,王川,林春金,张新,姚望. 滨海岩溶注浆充填体性能研究[J]. 山东大学学报 (工学版), 2022, 52(1): 103-110.

ZHOU Yong, LI Zhaofeng, ZUO Zhiwu, WANG Chuan, LIN Chunjin, ZHANG Xin, YAO Wang. Properties of limestone tailing based karst filling materials under coastal conditions[J]. Journal of Shandong University(Engineering Science), 2022, 52(1): 103-110.

参考文献

[1] 曹建华,蒋忠诚,袁道先,等. 岩溶动力系统与全球变化研究进展[J]. 中国地质,2017,44(5):874-900. CAO Jianhua, JIANG Zhongcheng, YUAN Daoxian, et al. Research progress of karst dynamic system and global change[J]. Geology of China, 2017, 44(5):874-900.
[2] 但新球,贺东北,吴协保,等. 中国岩溶地区生态特征与石漠化危害探讨[J]. 中南林业调查规划, 2018, 37(12): 62-66. DAN Xinqiu, HE Dongbei, WU Xiebao, et al. Ecological characteristics of karst areas in china and the hazard of rocky desertification [J]. Central South Forest Inventory and Planning, 2018, 37(12): 62-66.
[3] 陈鸿汉,邹胜章,朱远峰,等. 滨海岩溶区过渡带碳酸盐岩混合溶蚀作用试验研究[J]. 地质学报,2001(3): 313. CHEN Honghan, ZOU Shengzhang, ZHU Yuanfeng, et al. Experimental study on mixed dissolution of carbonate rocks in transition zone of coastal karst area[J]. Journal of Geological, 2001(3): 313.
[4] HAN D M, SONG X F, CURRELL M J. Identification of anthropogenic and natural inputs of sulfate into a karstic coastal groundwater system in northeast China: evidence from major ions, δ13CDIC and δ34SSO4[J]. Hydrology and Earth System Sciences, 2016, 20: 1983-1999.
[5] 钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报, 2012, 31(10): 1945-1956. QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(10): 1945-1956.
[6] 刘奇,陈卫忠,袁敬强,等. 基于渗流-侵蚀理论的岩溶充填介质注浆加固效果评价[J]. 岩石力学与工程学报, 2020, 39(3): 572-580. LIU Qi, CHEN Weizhong, YUAN Jingqiang, et al. Evaluation of grouting reinforcement effect for karst filling medium based on seepage-erosion theory[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(3): 572-580.
[7] 李术才,李晓昭,靖洪文,等. 深长隧道突水突泥重大灾害致灾机理及预测预警与控制理论研究进展[J]. 中国基础科学, 2017, 19(3):27-43. LI Shucai, LI Xiaozhao, JING Hongwen, et al. Research development of catastrophe mechanism and forecast controlling theory of water inrush and mud gushing in deep long tunnel[J]. Basic Science in China, 2017, 19(3): 27-43.
[8] LI Shucai, ZHANG Jian, LI Zhaofeng, et al. Investigation and practical application of a new cementitious anti-washout grouting material[J]. Construction and Building Materials, 2019, 224: 66-77.
[9] LI Shucai, LIU Rentai, ZHANG Qingsong, et al. Protection against water or mud inrush in tunnels by grouting: A review[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2016, 8(5): 753-766.
[10] 张聪,阳军生,张贵金,等. 水下岩溶浆液抗分散性质试验研究及工程应用[J]. 岩土工程学报, 2017, 39(10): 1859-1866. ZHANG Cong,YANG Junsheng,ZHANG Guijin,et al. Experimental study on anti-dispersion properties of underwater karst grout and its engineering application[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1859-1866.
[11] 李利平,李术才,崔金声. 岩溶突水治理浆材的试验研究[J]. 岩土力学, 2009, 30(12): 1859-1866. LI Liping, LI Shucai, CUI Jinsheng. Experimental study on slurry treatment of karst water inrush[J]. Rock and Soil Mechanics, 2009, 30(12): 1859-1866.
[12] ZHANG Cong, FU Jinyang, YANG Junsheng, et al. Formulation and performance of grouting materials for underwater shield tunnel construction in karst ground[J]. Construction and Building Materials, 2018, 187: 327-338.
[13] ZHANG Yijie, WANG S, LI Liping, et al. A preliminary study of the properties of potassium phosphate magnesium cement-based grouts admixed with metakaolin, sodium silicate and bentonite[J]. Construction and Building Materials, 2020, 262: 119893.
[14] 刘娟红,周在波,吴爱祥,等. 低浓度拜耳赤泥充填材料制备及水化机理[J]. 工程科学学报, 2020, 42(11): 1457-1464. LIU Juanhong, ZHOU Zaibo, WU Aixiang, et al. Preparation and hydration mechanism of low concentration Bayer red mud filling material[J]. Journal of Engineering Science, 2020, 42(11): 1457-1464.
[15] 赵康,宋宇峰,于祥,等. 不同纤维作用下尾砂胶结充填体早期力学特性及损伤本构模型研究[J]. 岩石力学与工程学报, 2022, 41(2): 282-291. ZHAO Kang, SONG Yufeng, YU Xiang, et al. Study on early mechanical properties and damage constitutive model of tailing-cemented backfill with different fibers [J]. Chinese Journal of Rock Mechanics and Engineering, 2022, 41(2): 282-291.
[16] 高萌,刘娟红,吴爱祥,等. 典型氯盐环境中富水充填材料腐蚀及劣化机理[J].中南大学学报(自然科学版), 2016, 47(8): 2776-2783. GAO Meng, LIU Juanhong, WU Aixiang, et al. Corrosion and deterioration mechanism of water-rich filling materials in typical chloride environment[J].Journal of Central South University(Science and Technology), 2016, 47(8): 2776-2783.
[17] 高萌,刘娟红,吴爱祥. 碳酸盐溶液中富水充填材料的腐蚀及劣化机理[J].工程科学学报, 2015, 37(8): 976-983. GAO Meng, LIU Juanhong, WU Aixiang. Corrosion and deterioration mechanism of water-rich filling materials in carbonate solution[J].Journal of Engineering Science, 2015, 37(8): 976-983.
[18] 王海龙,郭惟嘉,陈绍杰,等. 煤矿充填膏体力学性质试验研究[J].矿业研究与开发, 2012, 32(4): 8-10. WANG Hailong, GUO Weijia, CHEN Shaojie, et al. Experimental study on physical properties of filling paste in coal mine[J].Mining Research and Development, 2012, 32(4): 8-10.
[19] 杜兆文,陈绍杰,尹大伟,等. 氯盐侵蚀环境下膏体充填加固体稳定性试验研究[J].中国矿业大学学报, 2021, 50(3): 532-538. DU Zhaowen, CHEN Shaojie, YIN Dawei, et al. Experimental study on the stability of paste backfill under chloride erosion environment[J].Journal of China University of Mining and Technology, 2021, 50(3): 532-538.
[20] 吕擎峰,王子帅,陈臆,等. 氯化钠对碱激发地聚物强度影响机理研究[J].功能材料, 2020, 51(2): 2067-2071. LÜ Qingfeng, WANG Zishuai, CHEN Yi, et al. Mechanism of influence of sodium chloride on strength of alkali-excited geopolymer[J]. Journal of Functional Materials, 2020, 51(2): 2067-2071.
[21] 吴再海,纪洪广,姜海强,等. 尾砂胶结含盐冻结充填加固体力学特性研究[J].岩土力学, 2020, 41(6): 1874-1880. WU Zaihai, JI Hongguang, JIANG Haiqiang, et al. Study on mechanical properties of tailings cementation salt frozen filling[J].Rock and Soil Mechanics, 2020, 41(6): 1874-1880.
[22] HERBERT Pöllmann. Synthesis, properties and solid solution of ternary lamellar calcium aluminate hydroxi salts(AFm-phases)containing SO^2-₄, CO^2-₃ and OH^-[J]. Journal of Mineral Geochemistry, 2006, 182: 173-181.
[23] 肖鹏震,张戎令,胡锐鹏,等. 混凝土抗硫酸盐侵蚀性能及其离子扩散影响因素研究[J]. 中国材料进展, 2021, 40(5): 359-365. XIAO Pengzhen, ZHANG Rongling, HU Rupeng, et al. Study on sulfate resistance of concrete and factors affecting ion diffusion[J]. Material Progress in China, 2021, 40(5): 359-365.
[24] 王勇,吴爱祥,王洪江,等. 初始温度条件下全尾胶结膏体损伤本构模型[J]. 工程科学学报, 2017, 37(14): 44-45. WANG Yong, WU Aixiang, WANG Hongjiang, et al. Damage constitutive model of cemented tailing paste under initial temperature effect[J]. Chinese Journal of Engineering, 2017, 37(14): 44-45.
[25] 吴中伟,廉慧珍. 高性能混凝土[M]. 北京:中国铁道出版社, 1999: 22-27.

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed