全固廢膏體關鍵性能指標的多目標優化

阮竹恩; 吳愛祥; 王貽明; 王少勇; 王建棟

doi:10.13374/j.issn2095-9389.2021.08.15.001

全固廢膏體關鍵性能指標的多目標優化

doi: 10.13374/j.issn2095-9389.2021.08.15.001

阮竹恩^{1, 2},
吳愛祥^{1, 3, ,},
王貽明^{1, 3},
王少勇^{1, 3},
王建棟^{1, 3}

1.
北京科技大學土木與資源工程學院，北京 100083
2.
北京科技大學順德研究生院，佛山 528399
3.
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

基金項目: 國家自然科學基金重點資助項目（52130404）；中國博士后科學基金資助項目（2021M690011）；北京市自然科學基金資助項目（8192029）；廣東省基礎與應用基礎研究基金資助項目（2021A1515110161）；北京科技大學順德研究生院博士后科研經費資助項目（2021BH011）

詳細信息

通訊作者:
E-mail: wuaixiang@126.com

中圖分類號: TD853
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- HTML全文瀏覽量: 263
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- 被引次數: 0
出版歷程
- 收稿日期: 2021-08-15
- 網絡出版日期: 2021-10-19
- 刊出日期: 2022-04-02

Multiple response optimization of key performance indicators of cemented paste backfill of total solid waste

RUAN Zhu-en^{1, 2},
WU Ai-xiang^{1, 3
, ,},
WANG Yi-ming^{1, 3},
WANG Shao-yong^{1, 3},
WANG Jian-dong^{1, 3}

1.
School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China
3.
Key Laboratory of High Efficient Mining and Safety of Metal Mines (Ministry of Education), University of Science and Technology Beijing, Beijing 100083, China

More Information

Corresponding author: E-mail: wuaixiang@126.com

摘要

摘要: 在全尾砂膏體充填的基礎上提出了全固廢膏體充填，將全尾砂、廢石、水淬渣等固廢制備成膏體料漿充填至井下采空區，實現采空區垮塌、尾礦庫潰壩和廢石場滑坡的協同治理，達到“全廢治三害”的效果。為此，研究了固體質量分數、廢石摻量和膠固粉耗量對全固廢膏體的塌落度、屈服應力、單軸抗壓強度和泌水率的影響。根據國家標準規定的技術指標范圍，對全固廢膏體的關鍵性能指標進行了多目標優化。研究發現，全固廢膏體的關鍵性能指標和全尾砂膏體相似，具有良好的流動性、輸送性能與力學性能，并具有一定的泌水性。固體質量分數、廢石摻量和膠固粉耗量對全固廢膏體的關鍵性能指標具有顯著的影響，其中固體質量分數對塌落度和屈服應力影響最大，膠固粉耗量對單軸抗壓強度和泌水率的影響最大。通過研究，最終多目標優化所得最優參數是固體質量分數為79.31%、廢石摻量為18.86%（質量分數）、膠固粉耗量（膠固粉質量與全尾砂和廢石質量之和的比值）為3∶20，對應的塌落度為25.45 cm、屈服應力為100.49 Pa、單軸抗壓強度為3.55 MPa、泌水率為1.50%。多目標優化結果可為實際應用提供參考，而總評歸一值模型也可應用于其他礦山膏體的多目標優化。
- 全固廢膏體充填 /
- 總評歸一值 /
- 塌落度 /
- 屈服應力 /
- 單軸抗壓強度 /
- 泌水率
Abstract: Tailings and waste rock produced in metal mines are the most common industrial solid wastes all over the world, resulting in serious environmental and safety issues. Cemented paste backfill (CPB) is widely used for tailings management and stope treatment. CPB of total solid waste (TSW-CPB) was proposed on the basis of CPB of full-tailings. In the TSW-CPB process, thickened full-tailings, waste rock, and slag are mixed to prepare a paste that is filled into the stope. TSW-CPB can avoid the collapse of a stope, failure of the tailings storage facility, and landslide of a waste-rock yard, achieving the goal of “total waste to cure three harms.” The effects of solid fraction (SF), waste rock dosage (WRD), and glue powder dosage (GPD) on the slump (S), yield stress (τ₀), uniaxial compressive strength (UCS), and bleeding rate (BR) were investigated through orthogonal experiments. According to the scope of technical indicators specified in the National Standard of the People’s Republic of China “Technical specification for the total tailings paste backfill (GB/T 39489—2020),” the overall desirability function approach was used to conduct multiple response optimization of key TSW-CPB performance indicators. TSW-CPB was shown to have similar fluidity, transportation performance, mechanical properties, and bleeding performance to the CPB of full-tailings. The SF, WRD, and GPD affect the S, τ₀, UCS, and BR of TSW-CPB considerably. The SF has the most important influence on S and τ₀, while GPD has the most substantial impact on UCS and BR. Multiple response optimization yielded SF = 79.31%, WRD = 18.86%, and GPD = 3:20, with S = 25.45 cm, τ₀ = 100.49 Pa, UCS = 3.55 MPa, and BR = 1.50% as the corresponding responses. The optimal results can provide references for practical application, and the overall desirability function approach can be used in other mines to optimize multi objective CPB.
- cemented paste backfill of total solid waste /
- overall desirability /
- slump /
- yield stress /
- uniaxial compressive strength /
- bleeding rate

HTML全文

圖 1 全尾砂和膠固粉粒徑分布

Figure 1. Particle size distribution of full-tailings and glue powder

下載: 全尺寸圖片幻燈片

圖 2 正交實驗結果的變化規律

Figure 2. Evolution of orthogonal experiment results

下載: 全尺寸圖片幻燈片

圖 3 基于極差分析的各響應目標隨參數（a）SF,（b）WRD,（c）GPD的變化規律

Figure 3. Evolution of each response with (a) SF, (b) WRD, and (c) GPD by range analysis

下載: 全尺寸圖片幻燈片

表 1 廢石粒級分布

Table 1. Particle-size distribution of waste rock

Particle size/cm	Volume fraction/%
?0.5	1.10
0.5?0.6	12.71
0.6?0.7	8.87
0.7?0.8	6.80
0.8?0.9	14.83
0.9?1.0	55.69

下載: 導出CSV

表 2 L₁₆(4³)正交實驗表及實驗結果

Table 2. Parameters and results of the L₁₆(4³) orthogonal experiment

Experiment number	Factors			Responses
Experiment number	SF/%	WRD/%	GPD	S/cm	τ₀/Pa	UCS/MPa	BR/%
1	77 (Level 1)	5 (Level 1)	1∶10 (Level 1)	28.1	59.439	1.4	13.69
2	77	10 (Level 2)	1∶8 (Level 2)	27.9	62.236	1.6	11.83
3	77	15 (Level 3)	1∶6 (Level 3)	28.0	82.282	2.7	5.60
4	77	20 (Level 4)	1∶4 (Level 4)	28.3	91.606	2.6	0.44
5	78 (Level 2)	5	1∶8	26.9	170.860	2.1	6.24
6	78	10	1∶10	27.8	160.138	0.6	11.98
7	78	15	1∶4	27.6	105.192	3.9	0.43
8	78	20	1∶6	26.8	62.935	3.4	2.68
9	80 (Level 3)	5	1∶6	25.4	269.683	5.1	0.21
10	80	10	1∶4	25.7	224.236	6.3	0.42
11	80	15	1∶10	26.5	149.413	1.5	5.12
12	80	20	1∶8	26.1	116.081	3.6	1.48
13	81 (Level 4)	5	1∶4	24.7	321.436	10.6	0.32
14	81	10	1∶6	25.8	241.718	6.1	0.14
15	81	15	1∶8	25.9	168.060	4.0	0.94
16	81	20	1∶10	26.3	166.429	3.1	0.88

下載: 導出CSV

表 3 全尾砂膏體的性能指標范圍

Table 3. Property range of full-tailings paste

S/cm	τ₀/Pa	UCS/MPa	BR/%
18?26	100?200	0.2?5	1.5?5

下載: 導出CSV

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