黄金科学技术 ›› 2019, Vol. 27 ›› Issue (5): 731-739.doi: 10.11872/j.issn.1005-2518.2019.05.731
Huazhe JIAO(),Xiangfei JIN,Xinming CHEN(),Yixuan YANG,Jinxing WANG
摘要:
浓密床层导水通道分布特征及通道内部的细观渗流机制是影响全尾砂重力浓密效果的关键因素。利用连续浓密试验与CT扫描技术相结合的方法研究剪切作用对床层孔隙分布特征的影响,将扫描结果导入COMSOL软件进行床层内部液体逆向渗流规律模拟,揭示剪切作用对排水过程的影响机理。结果表明:在给料浓度为10%,絮凝剂浓度为0.01%时,无/有剪切作用下连续浓密平均浓度分别为50.10%和55.82%;内部孔隙率分别为49.90%和44.18%。无/有剪切作用下导水通道数量分别为6和2,剪切作用使导水通道的数量降低了66.7%;流出通道数分别为6和1,流出通道数量降低了83.3%;通道内液体最大渗流速度分别为9.574×10-6 m/s和2.592×10-6 m/s,出口最大流速分别为5.372×10-6 m/s和1.468×10-6 m/s;孔隙表面最大压力值随着液体逆向渗流逐渐降低。剪切前导水通道呈开放连通状态,排水后孔隙体积减小,导水通道闭合,床层浓度进一步提高。导水通道数量的降低说明剪切作用实现了床层的强化排水,为膏体材料的制备奠定基础。
中图分类号:
1 | 杨超,郭利杰,王劼,等. 某金矿大倍线加压充填技术研究与应用[J]. 黄金科学技术,2019,27(1):89-96. |
YangChao,GuoLijie,WangJie,et al. Study and application of large fill-times-line pressure filling technology in a gold mine[J].Gold Science and Technology,2019,27(1):89-96. | |
2 | 单智勇,苏勇松. 膏体充填工作面底板破坏深度研究[J]. 河南理工大学学报(自然科学版),2012,31(1):35-38. |
ShanZhiyong,SuYongsong. Study on the broken depth of floor failure on the mining face with paste filling[J]. Journal of Henan Polytechnic University(Natural Science),2012,31(1):35-38. | |
3 | 吴爱祥,杨莹,程海勇,等. 中国膏体技术发展现状与趋势[J]. 工程科学学报,2018,40(5):517-525. |
WuAixiang,YangYing,ChengHaiyong,et al. Status and prospects of paste technology in China[J].Chinese Journal of Engineering,2018,40(5): 517-525. | |
4 | 李夕兵,刘冰. 硬岩矿山充填开采现状评述与探索[J]. 黄金科学技术,2018,26(4):492-502. |
LiXibing,LiuBing.Review and exploration on the current situation of filling mining in hard rock mines[J]. Gold Science and Technology,2018,26(4):492-502. | |
5 | 陈宏兵,王永成,胡世利. 高水固结尾砂充填工艺的充填材料及用量计算[J]. 黄金科学技术,2007,15(3):58-61. |
ChenHongbing,WangYongcheng,HuShili.Stuffing and dosage calculation of using high concentration to concrete tailings[J].Gold Science and Technology,2007,15(3):58-61. | |
6 | 卞继伟,王新民,肖崇春.全尾砂动态絮凝沉降试验研究[J].中南大学学报(自然科学版),2017,48(12):3278-3283. |
BianJiwei,WangXinmin,XiaoChongchun. Experimental study on dynamic flocculating sedimentation of unclassified tailings[J].Journal of Central South University(Science and Technology),2017,48(12):3278-3283. | |
7 | 焦华喆,王洪江,吴爱祥,等. 全尾砂絮凝沉降规律及其机理[J]. 北京科技大学学报,2010,32(6):702-707. |
JiaoHuazhe,WangHongjiang,WuAixiang,et al.Rule and mechanism of flocculation sedimentation of unclassified tailings[J].Journal of University of Science and Technology Beijing,2010,32(6):702-707. | |
8 | 尹升华,王雷鸣,陈勋,等. 不同堆体结构下矿岩散体内溶液渗流规律[J]. 中南大学学报(自然科学版),2018,49(4): 949-956. |
YinShenghua,WangLeiming,ChenXun,et al. Seepage law of solution inside ore granular under condition of different heap constructions[J].Journal of Central South University(Science and Technology),2018,49(4):949-956. | |
9 | 张钦礼,刘奇,赵建文. 全尾砂絮凝沉降参数预测模型研究[J]. 东北大学学报(自然科学版),2016,37(6):875-879. |
ZhangQinli,LiuQi,ZhaoJianwen. Study on the parameters prediction model of flocculating sedimentation of crude tailings[J].Journal of Northeastern University(Natural Science),2016,37(6):875-879. | |
10 | 王贻明,吴爱祥,左恒,等.微粒渗滤沉积作用对铜矿排土场渗流特性的影响[J]. 中国有色金属学报,2007(12):2074-2078. |
WangYiming,WuAixiang,ZuoHeng,et al. Effect of particles sedimentation during leaching on seepage characteristic of copper dumps[J]. The Chinese Journal of Nonferrous Metals,2007(12):2074-2078. | |
11 | BürgeraR,DamascenobJ R,KarlsencKH. A mathematical model for batch and continuous thickening of flocculated suspensions in vessels with varying cross section[J]. International Journal of Mineral Processing,2004,73(2/3/4):183-208. |
12 | 尹光志,敬小非,魏作安,等. 粗、细尾砂筑坝渗流特性模型试验及现场实测研究[J].岩石力学与工程学报,2010,29(增2):3710-3718. |
YinGuangzhi,JingXiaofei,WeiZuo’an,et al. Study of model test of seepage characteristics and field measurement of coarse and fine tailings dam[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(Supp.2):3710-3718. | |
13 | 高志勇,吴爱祥,焦华喆,等. 全尾砂动态浓密沉降规律研究[J]. 有色金属(矿山部分),2017,69(2):1-6. |
GaoZhiyong,WuAixiang,JiaoHuazhe,et al. Dynamic thickening sedimentation of unclassified tailings[J]. Nonferrous Metals(Mining Section),2017,69(2):1-6. | |
14 | 朱时廷,侯运炳,陈林林,等. 全尾砂沉降性能及其影响因素[J]. 地下空间与工程学报,2017,13(4):931-937. |
ZhuShiting,HouYunbing,ChenLinlin,et al.Settling performance of total tailings slurry and its influencing factors[J]. Chinese Journal of Underground Space and Engineering,2017,13(4): 931-937. | |
15 | 焦华喆,吴爱祥,王洪江,等. 全尾砂絮凝沉降特性实验研究[J]. 北京科技大学学报,2011,33(12):1437-1441. |
JiaoHuazhe,WuAixiang,WangHongjiang,et al.Experiment study on the flocculation settlement characteristic of unclassified tailings[J].Journal of University of Science and Technology Beijing,2011,33(12):1437-1441. | |
16 | 吴爱祥,周靓,尹升华,等. 全尾砂絮凝沉降的影响因素[J]. 中国有色金属学报,2016,26(2):439-446. |
WuAixiang,ZhouLiang,YinShenghua,et al. Factors affecting flocculation and settlement of tailings[J].The Chinese Journal of Nonferrous Metals,2016,26,(2):439-446. | |
17 | 徐祖新,张义杰,王居峰,等.渤海湾盆地沧东凹陷孔二段致密储层孔隙结构定量表征[J]. 天然气地球科学,2016,27(1):102-110. |
XuZuxin,ZhangYijie,WangJufeng,et al.Quantitative characterization of pore structure of the second member of Kongdian Formation tight reservoirs in Cangdong Sag[J]. Natural Gas Geoscience,2016,27(1):102-110. | |
18 | 赵岩,郑娇玉,郭鹏,等.ImageJ软件在泥石流固体颗粒分析中的应用[J].兰州大学学报(自然科学版),2015,51(6): 877-881. |
ZhaoYan,ZhengJiaoyu,GuoPeng,et al. Application of the ImageJ software in analysis of solid grains in a debris flow gully[J].Journal of Lanzhou University(Natural Science),2015,51(6): 877-881. | |
19 | 徐轶,徐青. 基于COMSOL Multiphysics的渗流有限元分析[J].武汉大学学报(工学版),2014,47(2): 165-170. |
XuYi,XuQing. Finite element analysis of seepage based on COMSOL Multiphysics[J].Engineering Journal of Wuhan University,2014,47(2): 165-170. | |
20 | NiX M,MiaoJ,LüR S,et al. Quantitative 3D spatial characterization and flow simulation of coal macropores based on μCT technology[J]. Fuel,2019,236:382-393. |
21 | 杨保华,吴爱祥,王贻明,等. 堆浸中矿岩散体介质孔隙结构三维可视化[J]. 矿冶工程,2008(2):6-9. |
YangBaohua,WuAixiang,WangYiming,et al. Three dimensional visualization of pore structure of ore granular media for heap leaching[J].Mining and Metallurgical Engineering,2008(2):6-9. | |
22 | 孟明.亭口反调节水库土石坝渗流与稳定数值分析研究[D]. 杨凌:西北农林科技大学,2016. |
MengMing. Research on Seepage and Stability Numerical Analysis of Tingkou Counter Reservoir Embankment Dam[D]. Yangling:Northwest A&F University,2016. | |
23 | 章丽莎. 滨海地区地下水位变化对地基及基坑渗流特性的影响研究[D]. 杭州:浙江大学,2017. |
ZhangLisha. Study on the Influence of Groundwater Table Variation on the Seepage Behavior of Foundation and Excavation in Coastal Area[D].Hangzhou:Zhejiang University,2017. | |
24 | 王瑞,沈振中,陈孝兵. 基于COMSOL Multiphysics的高拱坝渗流—应力全耦合分析[J]. 岩石力学与工程学报,2013,32(增2): 3197-3204. |
WangRui,ShenZhenzhong,ChenXiaobing.Full coupled analysis of seepage-stress fields for high aech dam based on COMSOL multiphysics[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(Supp.2):3197-3204. |
[1] | 张涛, 李德贤, 张鹏强, 赵国亮, 何宇, 牛猛, 俞军真. 镍渣—全尾砂混合骨料配比试验研究[J]. 黄金科学技术, 2024, 32(3): 437-444. |
[2] | 海龙,程同俊,徐博,赵鑫. 粉煤灰改良铁尾矿膏体充填材料试验研究[J]. 黄金科学技术, 2022, 30(5): 724-732. |
[3] | 李兆宇,孙伟,张盛友,李金鑫. 全尾砂物理特性对絮凝沉降性能影响规律的研究[J]. 黄金科学技术, 2022, 30(1): 64-71. |
[4] | 张美道,饶运章,徐文峰,王文涛. 全尾砂膏体充填配比优化正交试验[J]. 黄金科学技术, 2021, 29(5): 740-748. |
[5] | 赵鑫,海龙,徐博,程同俊. 电厂灰渣制备井下膏体充填材料试验研究[J]. 黄金科学技术, 2021, 29(4): 582-592. |
[6] | 康虔,王运敏,贺严,薛希龙,张楚旋. 固液两相耦合条件下全尾砂连续沉降规律研究[J]. 黄金科学技术, 2019, 27(6): 896-902. |
[7] | 江科,康瑞海,姚中亮,彭亮. 全尾砂最佳絮凝沉降浓度及调控方式研究[J]. 黄金科学技术, 2019, 27(3): 440-448. |
[8] | 徐文峰,饶运章,李尚辉,许威. 含膨润土充填料浆泌水特性分析[J]. 黄金科学技术, 2019, 27(3): 433-439. |
[9] | 陈鑫政,郭利杰,李文臣,李宗楠. 全尾砂沉降浓缩试验研究[J]. 黄金科学技术, 2019, 27(1): 105-111. |
[10] | 李夕兵,刘冰. 硬岩矿山充填开采现状评述与探索[J]. 黄金科学技术, 2018, 26(4): 492-502. |
[11] | 王新民, 赵茂阳, 荣帅, 王浩, 张云海. APAM对全尾砂胶结充填体早期强度影响研究[J]. 黄金科学技术, 2018, 26(3): 305-311. |
[12] | 赵国彦,侯俊,张小瑞,李地元,王涛. 磷石膏膏体充填体力学特性研究[J]. 黄金科学技术, 2016, 24(5): 7-12. |
[13] | 戴兴国,李岩,张碧肖. 深井膏体降压满管输送数值模拟研究[J]. 黄金科学技术, 2016, 24(3): 70-75. |
[14] | 王新民,胡一波,王石,刘吉祥,陈宇,卞继伟. 超细全尾砂充填配比优化正交试验研究[J]. 黄金科学技术, 2015, 23(3): 45-49. |
[15] | 戴兴国,方鑫,陈增剑,黄毅. 良山铁矿全尾砂胶结充填参数的合理选择[J]. 黄金科学技术, 2015, 23(1): 74-79. |
|