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板壁式充填结构支护下下行开采巷道围岩稳定性评价

Stability assessment of surrounding rock in downward mining route supported by slab-wall backfill structure.

作者信息

Yin Yu, Yang Shijiao, He Yan, Pan Jian, Guo Zhenpeng, Fan Junwei, Wang Zhipeng

机构信息

School of Resources Environment and Safety Engineering, University of South China, Hengyang, 421001, Hunan, People's Republic of China.

Sinosteel Maanshan General Lnstitute of Mining Research Co., Ltd, Maanshan, 243000, Anhui, People's Republic of China.

出版信息

Sci Rep. 2024 Jun 14;14(1):13706. doi: 10.1038/s41598-024-64620-5.

DOI:10.1038/s41598-024-64620-5
PMID:38877175
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11178809/
Abstract

Characteristic of ground pressure in surrounding rock is generally considered as the theoretical basis of parameter optimization for stope structure and technology. To explore the feasibility of efficient method for the second-step downward route backfill stopes in Shanjin gold mine, various numerical simulation methods were used to investigate the effect of slab-wall backfill structure on stability of surrounding rock in downward route mining system. The maximum principal stress, artificial false roof stress, and displacement were analyzed to evaluate the level of ground pressure in different mining areas. These results indicate the optimized structural parameters for backfill stopes, which may also provide a low-cost way to achieve a high safety for downward route mining system.

摘要

围岩地压特征通常被视为采场结构与工艺参数优化的理论基础。为探究三山岛金矿第二步下行进路式充填采场高效采矿方法的可行性，采用多种数值模拟方法研究了板壁充填结构对下行进路采矿系统中围岩稳定性的影响。分析了最大主应力、人工假顶应力和位移，以评估不同采区的地压水平。这些结果给出了充填采场的优化结构参数，也可能为实现下行进路采矿系统的高安全性提供一种低成本方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/a312d9b215ff/41598_2024_64620_Fig13_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/78f325371f17/41598_2024_64620_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/a312d9b215ff/41598_2024_64620_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/340242441750/41598_2024_64620_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/1ae42f1a01b9/41598_2024_64620_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/1c7b31dd1489/41598_2024_64620_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/5ed234c873ff/41598_2024_64620_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/4d74f469ea50/41598_2024_64620_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/5bbe8088ed9e/41598_2024_64620_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/a5421436afef/41598_2024_64620_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/83ce1cee237d/41598_2024_64620_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/e6caa7e66301/41598_2024_64620_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/ef2260897e7f/41598_2024_64620_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/7367349e2bf6/41598_2024_64620_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/78f325371f17/41598_2024_64620_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c1bf/11178809/a312d9b215ff/41598_2024_64620_Fig13_HTML.jpg

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