全尾砂膏體流變學研究現狀與展望（下）：流變測量與展望

吳愛祥; 李紅; 程海勇; 王貽明; 李翠平; 阮竹恩

doi:10.13374/j.issn2095-9389.2019.10.29.002

全尾砂膏體流變學研究現狀與展望（下）：流變測量與展望

doi: 10.13374/j.issn2095-9389.2019.10.29.002

吳愛祥¹,
李紅¹,
程海勇^{1, 2, ,},
王貽明¹,
李翠平¹,
阮竹恩¹

1.
北京科技大學金屬礦山高效開采與安全教育部重點實驗室，北京 100083
2.
昆明理工大學國土資源工程學院，昆明 650093

基金項目: 中國博士后科學基金資助項目（2020T130272，2019M663576）；國家自然科學基金資助項目（52074137，51834001）；金屬礦山高效開采與安全教育部重點實驗室開放基金資助項目（ustbmslab201801）

詳細信息

通訊作者:
E-mail：haiker2007@163.com

中圖分類號: TD853
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出版歷程
- 收稿日期: 2019-10-29
- 刊出日期: 2021-04-26

Status and prospects of research on the rheology of paste backfill using unclassified tailings (Part 2): rheological measurement and prospects

1.
Key Laboratory of Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China
2.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

More Information

Corresponding author: E-maill: haiker2007@163.com

摘要

摘要: 膏體充填是推動金屬礦綠色開采發展的關鍵技術，并可為資源的深部開采提供安全、綠色、高效的技術支撐。全尾砂膏體流變學是膏體充填技術的基礎理論，本文在綜述膏體流變概念、特性與模型的基礎上，進一步對流變測量技術現狀進行了系統梳理，概述了現階段常用的漿式旋轉流變儀、坍落筒、L管、傾斜管及環管法進行流變測量的原理及應用，針對膏體這一屈服型非牛頓流體，重點分析了屈服應力的測量，并對以上方法的適用性進行了綜合論述。流變測量深刻地影響著膏體流變理論及膏體充填工藝的發展，為此，對測量技術的關鍵問題進行了探討，指出構建膏體流變測量標準及加強流變測量技術與充填工藝的結合是重點，并對膏體流變學研究的發展趨勢進行了展望。
- 全尾砂 /
- 膏體充填 /
- 流變測量 /
- 屈服應力 /
- 測量標準
Abstract: Cemented paste backfill (CPB) technology is a significant approach for the development of green mining in metal mines and can provide safe, environmentally friendly, and efficient technical support for deep underground mining. As the theoretical basis of paste backfill, the rheological concepts, characteristics, and models of paste had been systematically reviewed, and the rheological measurement methods were analyzed herein. Rheological measurement enables the quantitative characterization of the rheological behavior of paste, and on this basis, a series of studies, such as the rheological constitutive equations of paste, evaluation of the influence of both internal and external factors on paste rheology, and quality control of CPB, was conducted. Generally, the rheology of paste is influenced by certain constituents, including solids concentration, particle size distribution, density, and cement hydration, and various external conditions, such as shear stress and temperature. The rheological properties of paste differ significantly, and currently, a unified method is not yet available for the rheological measurement of paste. Hence, comprehensive knowledge of rheological measurement is essential to achieve a better combination of rheology and CPB engineering, particularly in consideration of the specific physical and chemical properties of tailings and the common practice in the mining field. Therefore, the principles and applications of commonly used approaches, including the vane rheometer, slump cone, L-shaped tube, inclined pipe, and loop facility, were summarized, with emphasis on the measurement of yield stress because of its influence on the paste, that is, a non-Newtonian fluid. Furthermore, the applicability of the aforementioned measurement methods was comprehensively discussed. Given that rheological measurement has a profound effect on the development of paste rheology theory and paste backfill technology, the key problems were discussed by emphasizing the importance of the establishment of rheological measurement standards and the application of rheological measurement to paste backfill processes in real time. The development trend of research on paste rheology was also explored.
- unclassified tailings /
- paste backfill /
- rheological measurement /
- yield stress /
- measurement standard

HTML全文

圖 1 槳式旋轉流變儀及測試原理

Figure 1. Vane method and its principle

下載: 全尺寸圖片幻燈片

圖 2 典型的膏體剪切應力–時間曲線

Figure 2. A typical shear stress–time curve of paste

下載: 全尺寸圖片幻燈片

圖 3 蠕變恢復試驗測得的典型應變–時間曲線

Figure 3. Typical strain –time curves obtained by the creep recovery method

下載: 全尺寸圖片幻燈片

圖 4 流變數據擬合法測量屈服應力

Figure 4. Yield stress determined by extrapolation

下載: 全尺寸圖片幻燈片

圖 5 坍落度測量原理

Figure 5. Theoretical analysis of the slump test

下載: 全尺寸圖片幻燈片

圖 6 L管流變實驗裝置示意圖

Figure 6. Schematic of the L-shaped tube

下載: 全尺寸圖片幻燈片

圖 7 傾斜管流變實驗裝置圖

Figure 7. Schematic of the inclined pipe

下載: 全尺寸圖片幻燈片

圖 8 環管實驗裝置圖

Figure 8. Schematic of the loop facility

下載: 全尺寸圖片幻燈片

圖 9 濃密機底流實時在線流變監測^[49]

Figure 9. Online rheological monitoring of a thickener underflow pump in real time^[49]

下載: 全尺寸圖片幻燈片

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