院报 ›› 2014, Vol. 31 ›› Issue (5): 84-86,101.DOI: 10.3969/j.issn.1001-5485.2014.05.017

• 岩土工程 • 上一篇    下一篇

砂砾石土灌浆浆液扩散半径试验研究

秦鹏飞1,2,符平1,2,王春1,2,王丽娟1,2   

  1. 1.中国水利水电科学研究院,北京 100038;
    2.北京中水科水电科技开发有限公司,北京 100038
  • 收稿日期:2013-08-26 修回日期:2014-05-12 出版日期:2014-05-12 发布日期:2014-05-12
  • 作者简介:秦鹏飞(1984-),男,河南鲁山人,博士研究生,从事水利岩土工程方面的学习、研究工作,(电话)15010397325(电子信箱)qinpengfei@emails.bjut.edu.cn。

Experimental Research on Diffusion Radius of Slurry in Sand and Gravel Layer Grouting

QIN Peng-fei1,2, FU Ping1,2, WANG Chun1,2, WANG Li-juan1,2   

  1. 1.China Institute of Water Resources and Hydropower Research, Beijing 100038, China;
    2. Beijing Zhongshuike Hydropower Technology Development Company Ltd., Beijing 100038, China
  • Received:2013-08-26 Revised:2014-05-12 Online:2014-05-12 Published:2014-05-12

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摘要： 砂砾石层灌浆施工中,水泥浆液的扩散半径决定着灌浆孔的布置和浆液消耗量,也是选择工艺参数、评价灌浆效果的重要依据,因此,水泥浆液的扩散半径是灌浆施工中非常重要的参数。通过设计正交试验,对影响水泥浆液扩散半径的几个因素(水灰比、孔隙比、灌浆压力)进行了试验研究。试验结果表明:水灰比是影响水泥浆液扩散半径最显著的因素,水泥浆液的水灰比越大,浆液中的多余水分越多,对水泥浆液流动性能的改善越显著。

关键词: 砂砾石层, 灌浆, 扩散半径, 试验研究

Abstract: The diffusion radius of cement slurry, as an important parameter of grouting, determines the layout of grouting holes and the quantity of slurry in sand and gravel layer grouting construction. It is also an important basis for selecting techniques and estimating grouting effects. By designing orthogonal tests, we analyzed several factors which affect the diffusion radius of cement slurry including water-cement ratio, void ratio, and grouting pressure. Research results indicate that water-cement ratio is the most significant factor affecting the diffusion radius. Slurry liquidity improves with the increase of water-cement ratio and excessive water content.

Key words: sand and gravel layer, grouting, diffusion radius, laboratory test

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