• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

煤体注浆材料优选及加固煤体单轴压缩试验

张保勇, 高橙, 吴强, 于跃, 高霞, 张强, 吴琼

张保勇, 高橙, 吴强, 于跃, 高霞, 张强, 吴琼. 煤体注浆材料优选及加固煤体单轴压缩试验[J]. 煤矿安全, 2017, 48(2): 28-32.
引用本文: 张保勇, 高橙, 吴强, 于跃, 高霞, 张强, 吴琼. 煤体注浆材料优选及加固煤体单轴压缩试验[J]. 煤矿安全, 2017, 48(2): 28-32.
ZHANG Baoyong, GAO Cheng, WU Qiang, YU Yue, GAO Xia, ZHANG Qiang, WU Qiong. Optimization of Coal Grouting Materials and Uniaxial Compression Test of Reinforced Coal[J]. Safety in Coal Mines, 2017, 48(2): 28-32.
Citation: ZHANG Baoyong, GAO Cheng, WU Qiang, YU Yue, GAO Xia, ZHANG Qiang, WU Qiong. Optimization of Coal Grouting Materials and Uniaxial Compression Test of Reinforced Coal[J]. Safety in Coal Mines, 2017, 48(2): 28-32.

煤体注浆材料优选及加固煤体单轴压缩试验

Optimization of Coal Grouting Materials and Uniaxial Compression Test of Reinforced Coal

  • 摘要: 为了在瓦斯抽采钻孔施工过程中对帷幕注浆加固材料进行优选,通过黏度和抗压强度,确定高延性水泥基复合材料的基本水灰比。采用粉煤灰、微硅粉以及聚乙烯醇作为掺合剂,研究了不同掺合剂配比对注浆加固材料性能的影响,包括浆液黏度、凝结时间及固结煤体渗透率和抗压强度。试验结果表明:高延性水泥基复合材料的基本水灰比为0.75∶1;水灰比对注浆材料的黏度和抗压强度影响显著,注浆材料黏度与固结煤体渗透率、抗压强度、弹性模量受掺合剂配比影响明显;与其它体系相比,体系1(粉煤灰、微硅粉以及聚乙烯配比分别为(5%、15%、3%)注浆材料黏度适中,固结煤体渗透率较低,抗压强度最高,其注浆效果最优。
    Abstract: This paper focuses on the reinforcement material optimization using curtain grouting method during drilling construction for gas extraction. First, the basic water cement ratio of cement based composite material with high ductility is determined based on the viscosity and the compressive strength. Then, the fly ash, silica fume, and polyvinyl alcohol are added to the composite material to investigate the effect of composition ratio on such performances as the viscosity, the setting time, the permeability and the compressive strength. The results show that: the basic water cement ratio is 0.75:1; the water-cement ratio obviously influences the viscosity and compressive strength. The admixture compositions have notable effect on the viscosity of grouting materials, consolidated coal permeability, compressive strength and elasticity modulus;system 1 (fly ash, silica fume and polyvinyl alcohol, 5:15:3 mass fraction) has the optimum grouting effect due to the highest compressive strength, low viscosity and medium viscosity, compared with other systems.
  • [1] 王彦凯,张超,林柏泉.基于PD密封材料的本煤层瓦斯抽采钻孔密封技术[J].煤矿安全,2013,44(5):80-82.
    [2] 周福宝,王鑫鑫,夏同强.瓦斯安全抽采及其建模[J].煤炭学报,2014,39(8):1659-1666.
    [3] 王振峰,周英,孙玉宁,等.新型瓦斯抽采钻孔注浆封孔方法及封堵机理[J].煤炭学报,2015,40(3):588-595.
    [4] 王兆丰,李杰,杨宏民,等.抽采钻孔封孔技术失效的二次处理措施[J].煤矿安全,2012,43(5):86-88.
    [5] 翟成,向贤伟,余旭,等.瓦斯抽采钻孔膏体封孔材料封孔性能研究[J].中国矿业大学学报,2013,42(6):982-988.
    [6] 张超,林柏泉,周延,等.本煤层近水平瓦斯抽采钻孔“强弱强”带压封孔技术研究[J].采矿与安全工程学报,2013,30(6):935-939.
    [7] 周福宝,夏同强,刘应科,等.二次封孔粉料颗粒输运特性的气固耦合模型研究[J].煤炭学报,2011,36(6):953-958.
    [8] 张国华,微光平,侯凤才.穿层钻孔起裂注水压力与起裂位置理论[J].煤炭学报,2007,32(1):52-55.
    [9] 欧阳振华,齐庆新,张寅,等.水力压裂预防冲击地压的机理与试验[J].煤炭学报,2011,36(增2):321-325.
    [10] 倪冠华,林柏泉,翟成,等.脉动水力压裂钻孔密封参数的测定及分析[J].中国矿业大学学报,2013,42(2):177-182.
    [11] 葛兆龙,梅绪东,卢义玉,等.煤矿井下水力压裂钻孔封孔力学模型及试验研究[J].岩土力学,2014,35(7):1907-1914.
    [12] 葛兆龙,梅绪东,卢义玉,等.煤矿井下新型水力压裂封孔材料优化及封孔参数研究[J].应用基础与工程科学学报,2014,22(6):1128-1139.
    [13] YANG Yingzi, GAO Xiaojian, DENG Hongwei, et al. Effects of Water/Binder Ratio on the Properties of Engineered Cementitious Composites[J].Journal of Wuhan University of Technology-Mater,2010,25(2): 298.
    [14] YANG Yingzi,YAO Yan,GAO Xiaojian,et al.Shrinkage Reducing Measures for Engineering Cementitious Composites[J].Journal of Wuhan University of Technology-Mater,2008,23(6): 907-911.
    [15] CHEN Zhitao,YANG Yingzi,YAO Yan.Impact Properties of Engineered Cementitious Composites with High Volume Fly Ash Using SHPB Test[J].Journal of Wuhan University of Technology-Mater,2012,27(3):590-596.
    [16] Yu S W,Page C L.Diffusion in cementitious materials:Ⅰ.Comparative study of chloride and oxygen diffusion in hydrated cement pastes[J].Cement and Concrete Research,1991,21(91): 581-588.
    [17] Yu S W,Page C L.Diffusion in cementitious materials:Ⅱ.Further investigations of chloride and oxygen diffusion in well-cured OPC and OPC/30%PFA pastes[J].Cement and Concrete Research,1995,25(4):819-826.
    [18] 沈华章,王水林,刘泉声.模拟应变软化岩石三轴试验过程曲线[J].岩土力学,2014,35(6):1647-1653.
计量
  • 文章访问数:  228
  • HTML全文浏览量:  0
  • PDF下载量:  0
  • 被引次数: 0
出版历程
  • 发布日期:  2017-02-19

目录

    /

    返回文章
    返回