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Impact of Near-Surface Ore Body Mining on Stability of Overburden and Dangerous Rock Masses on Slopes
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Liang JIA1, Anmin JIANG1, 2, Feifei WANG3, 4, Changhui ZHENG3, Kuan WU3, 4, Qingyang REN5
Mining and Metallurgical Engineering | 2025, 45(4) : 28 - 32
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Mining and Metallurgical Engineering | 2025, 45(4): 28-32
• MINING •
Impact of Near-Surface Ore Body Mining on Stability of Overburden and Dangerous Rock Masses on Slopes
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Liang JIA1, Anmin JIANG1, 2, Feifei WANG3, 4, Changhui ZHENG3, Kuan WU3, 4, Qingyang REN5
Affiliations
  • 1.Department of Management Engineering, Hunan Urban Construction College, Xiangtan 411101, Hunan, China
  • 2.School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
  • 3.School of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China
  • 4.Key Laboratory of Green Building and Intelligent Construction in Higher Educational Institutions of Hunan Province, Hunan City University, Yiyang 413000, Hunan, China
  • 5.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.005
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To explore the impact of near-surface ore body mining on the stability of overburden and dangerous rock masses of slopes, a phosphate mine was taken as an engineering project in the study. The stability of the dangerous rock mass of the slopes was determined by on-site investigation, and the evolution of deformation, stress and plastic zone of overburden under different mining schemes were simulated with FLAC3D software. The research results indicate that structural planes between layers of surrounding rock on the roof of stope are well-developed, probably causing falling debris in blocks or flakes. The strata are hard and brittle in lithology and have developed rock fractures. Under unloading effect of high and steep slopes, dangerous rocks are prone to be separated along the combination of fractures and strata plane, forming dangerous rock masses. The response law of the maximum stress in the overburden is similar to the law of the unbalanced force in numerical calculation. There is relatively small disturbance generated during mining process, which brings a little impact to the stability of adjacent stopes and surface. It is found that the ground surface is less affected by underground mining, with the deformation within the maximum limit value specified in the standard. If Ph2# ore body is mined after Ph1# ore body, the overburden can have relatively small displacement, and no connectivity in the plastic zones is occurred in the mining pillars, stopes and overlying strata.

shallow resource  /  near-surface ore body  /  overlying stratum  /  dangerous rock mass  /  surface subsidence  /  stratum collapse  /  stratum stability
Liang JIA, Anmin JIANG, Feifei WANG, Changhui ZHENG, Kuan WU, Qingyang REN. Impact of Near-Surface Ore Body Mining on Stability of Overburden and Dangerous Rock Masses on Slopes[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 28 -32 . DOI: 10.3969/j.issn.0253-6099.2025.04.005
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Year 2025 volume 45 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.04.005
  • Receive Date：2025-02-16
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-02-16
Funding
Affiliations
    1.Department of Management Engineering, Hunan Urban Construction College, Xiangtan 411101, Hunan, China
    2.School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
    3.School of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China
    4.Key Laboratory of Green Building and Intelligent Construction in Higher Educational Institutions of Hunan Province, Hunan City University, Yiyang 413000, Hunan, China
    5.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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