Strength distribution of cemented waste rock backfill: a similarity simulation experiment

被引:2
|
作者
Gao, Zhong [1 ]
Huang, Mingqing [2 ]
Zhan, Shulin [1 ]
Tan, Wei [1 ]
机构
[1] Zijin Min Grp Co Ltd, State Key Lab Comprehens Utilizat Low Grade Refrac, Longyan, Peoples R China
[2] Fuzhou Univ, Zijin Sch Geol & Min, Fuzhou, Peoples R China
基金
中国国家自然科学基金;
关键词
backfill strength; similarity simulation experiment; neural network; OpenCV; spatial distribution law; PASTE BACKFILL; SELF-DESICCATION; MODEL;
D O I
10.3389/feart.2023.1328421
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Backfill of cemented waste rock into underground mined-out areas is an effective way to eliminate solid wastes and potential hazards in mines. To understand the backfill strength distribution law throughout the stope, similarity simulation experiments were conducted for direct-irrigating cemented waste rock backfill, and OpenCV and neural network were employed to analyze particle segregation and the spatial distribution of backfill strength. Results show that distinct gravitational segregation leads to an uneven and heterogeneous distribution of natural graded waste rocks in a similar model. Backfill strength near sidewalls and bottom of the model surpasses that of other areas. In the vertical direction, the average backfill strength increases with depth, ranging from 1.15 MPa at the topmost layer to 1.91 MPa at the bottommost layer. Horizontally, the average backfill strength near model boundaries is consistently higher than that at the model center, irrespective of the layer depth and orientation. Neural network prediction on spatial backfill strength proves reliable, exhibiting an average relative error of 4.12%, compared to the traditional surface fitting with a 10.20% error. Verification tests affirm the capability of the neural network model to accurately predict the anisotropic and nonlinear distribution of backfill strength in a large stope.
引用
收藏
页数:16
相关论文
共 50 条
  • [41] Meso-scale modeling of the influence of waste rock content on mechanical behavior of cemented tailings backfill
    Xin, Liwei
    CONSTRUCTION AND BUILDING MATERIALS, 2021, 307
  • [42] Experimental study on mechanical and microstructure properties of cemented tailings-waste rock backfill with continuous gradation
    Wang, Bingwen
    Kang, Mingchao
    Liu, Chenyi
    Yang, Lei
    Li, Qianlong
    Zhou, Senlin
    JOURNAL OF BUILDING ENGINEERING, 2024, 95
  • [43] The study of strength behaviour of zeolite in cemented paste backfill
    Eker, Hasan
    Bascetin, Atac
    GEOMECHANICS AND ENGINEERING, 2022, 29 (04) : 421 - 434
  • [44] Influence Factors of High Cemented Gangue Backfill Strength
    Chen, Lei
    Zhao, Jian
    Zhao, Ming
    PROCEEDINGS OF THE 2016 2ND INTERNATIONAL CONFERENCE ON ARCHITECTURAL, CIVIL AND HYDRAULICS ENGINEERING (ICACHE 2016), 2016, 99 : 122 - 127
  • [45] Impact of Temperature on the Strength Development of the Tailing-Waste Rock Backfill of a Gold Mine
    Han, Bin
    Zhang, Shengyou
    Sun, Wei
    ADVANCES IN CIVIL ENGINEERING, 2019, 2019
  • [46] Effect of curing temperature on the mechanical properties and pore structure of cemented backfill materials with waste rock-tailings
    Gao, Rugao
    Wang, Weijun
    Xiong, Xin
    Li, Jingjing
    Xu, Chun
    CONSTRUCTION AND BUILDING MATERIALS, 2023, 409
  • [47] Crack resistance of cemented waste rock tailings backfill under splitting tensile load: Experimental and numerical investigations
    Zhu, Tianyu
    Chen, Zhonghui
    Cao, Jian
    Wang, Zhongyu
    Hao, Jianshuai
    Zhou, Zihan
    JOURNAL OF BUILDING ENGINEERING, 2025, 99
  • [48] Energy damage evolution and mesoscopic failure mechanism of cemented waste rock tailing backfill under axial compression
    Zhu, Tianyu
    Chen, Zhonghui
    Wang, Zhongyu
    Cao, Jian
    Hao, Jianshuai
    Zhou, Zihan
    STRUCTURES, 2025, 71
  • [49] Deformation failure and acoustic emission characteristics of continuous graded waste rock cemented backfill under uniaxial compression
    Guan Chen
    Yicheng Ye
    Nan Yao
    Fanghui Fu
    Nanyan Hu
    Zhen Zhang
    Environmental Science and Pollution Research, 2022, 29 : 80109 - 80122
  • [50] Damage constitutive models and damage evolution of cemented tailings and waste-rock backfill under impact loading
    Yin, Shenghua
    Zeng, Jialu
    Yan, Zepeng
    Wang, Leiming
    Chen, Wei
    Chen, Dapeng
    Yang, Jian
    CONSTRUCTION AND BUILDING MATERIALS, 2025, 460