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[1]马敬凯,冯国瑞,李竹.不同水灰比水泥净浆流变参数测定及注浆扩散特征*[J].中国安全生产科学技术,2023,19(8):100-107.[doi:10.11731/j.issn.1673-193x.2023.08.015]
　MA Jingkai,FENG Guorui,LI Zhu.Rheological parameters measurement and grouting diffusion characteristics of cement slurry with different water cement ratios[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(8):100-107.[doi:10.11731/j.issn.1673-193x.2023.08.015]
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不同水灰比水泥净浆流变参数测定及注浆扩散特征*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年8期
页码:
100-107
栏目:
职业安全卫生管理与技术
出版日期:
2023-08-31

文章信息/Info

Title:
Rheological parameters measurement and grouting diffusion characteristics of cement slurry with different water cement ratios
文章编号:
1673-193X(2023)-08-0100-08
作者:
马敬凯1; 2; 3; 冯国瑞1; 2; 3; 4; 李竹1; 2; 3
（1.太原理工大学 矿业工程学院，山西 太原 030024；
2.矿山岩层控制及灾害防控山西省重点实验室，山西 太原 030024；
3.山西省煤基资源绿色高效开发工程中心，山西 太原 030024；
4.山西浙大新材料与化工研究院，山西 太原 030024）
Author(s):
MA Jingkai1; 2; 3;  FENG Guorui1; 2; 3; 4;  LI Zhu1; 2; 3
(1.College of Mining Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;
2.Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster Prevention,Taiyuan Shanxi 030024,China;
3.Shanxi Province Coal-based Resources Green and High-efficiency Development Engineering Center,Taiyuan Shanxi 030024,China;
4.Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan Shanxi 030024,China)
关键词:
宾汉姆流体; 注浆压力; 水灰比; 裂隙开度; 扩散半径
Keywords:
Bingham fluid;  grouting pressure;  water cement ratio;  fracture aperture;  diffusion radius
分类号:
X936；TD353
DOI:
10.11731/j.issn.1673-193x.2023.08.015
文献标志码:
A
摘要:
为了探究不同水灰比水泥净浆的流变参数及注浆扩散特征，采用流变试验和数值模拟等方法，分析不同水灰比水泥净浆的流变性能及流变参数，研究宾汉姆流体在破碎岩体中的注浆扩散特征。研究结果表明：根据水灰比(b)水泥净浆可分为幂律流体(0.4≤b≤0.8)和宾汉姆流体(0.9≤b≤1.3)，稠度系数、流变指数和浆液屈服应力随着水灰比的增大而降低；扩散半径与注浆压力、水灰比、裂隙开度分别呈幂函数、指数函数、线性增长关系，扩散范围为以注浆孔轴向为长轴、径向扩散半径为短轴的椭圆状；影响浆液扩散半径的主要因素依次为注浆压力、水灰比、裂隙开度。研究结果可为注浆工艺参数的确定提供参考。
Abstract:
In order to explore the rheological parameters and grouting diffusion characteristics of cement slurry with different water cement ratios,the methods of rheological tests and numerical simulation were used to analyze the rheological properties and rheological parameters of cement slurry with different water cement ratios,and the grouting diffusion characteristics of Bingham fluid in broken rock mass were studied.The results show that according to the water cement ratio (b),the cement slurry can be divided into power law fluid (0.4≤b≤0.8) and Bingham fluid (0.9≤b≤1.3).The consistency coefficient,rheological index and yield stress of slurry decrease with the increase of water cement ratio.The relationship between the diffusion radius and the grouting pressure,water cement ratio and fracture aperture are the power function,exponential function and linear growth,and the diffusion range is elliptic with the axial direction of grouting hole as the long axis and the radial diffusion radius as the short axis.The main factors affecting the slurry diffusion radius are successively the grouting pressure,water cement ratio and fracture aperture.The research results can provide reference for the determination of grouting technical parameters.

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备注/Memo

备注/Memo:
收稿日期： 2023-04-24
* 基金项目： 国家杰出青年科学基金项目（51925402）；山西省科技重大专项项目（20201102004）；山西省重点实验室建设项目（202104010910021）
作者简介： 马敬凯，硕士研究生，主要研究方向为岩体力学与岩层控制。
更新日期/Last Update: 2023-09-07