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Safety-controlled Blasting Technology for High-steep Slopes in Open-pit Mines
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Jing-jing CHEN1, Wan-qing LIN2, Yi LIU1
Blasting | 2025, 42(2) : 105 - 110
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Blasting | 2025, 42(2): 105-110
• BLASTING IN ORE AND ROCK •
Safety-controlled Blasting Technology for High-steep Slopes in Open-pit Mines
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Jing-jing CHEN1, Wan-qing LIN2, Yi LIU1
Affiliations
  • 1.Hongda Blasting Engineering Group Co., Ltd., Guangzhou 510623, China
  • 2.Beijing CAS-Mechanics Blasting Co., Ltd., Beijing 100089, China
Published: 2025-06-01 doi: 10.3963/j.issn.1001-487X.2025.02.013
Outline
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The original stope benches of Dahuangshan Open-pit Mine were in disarray, with pumice between benchs and steep slope conditions. Following blasting operations, a crushing system was introduced to improve rock fragmentation efficiency, significantly increasing potential safety risks near high and steep slopes. This study researched safe blasting techniques and protective measures for slopes in open-pit mines to ensure slope safety during blasting construction. Active protection methods were proposed, including limiting instantaneous charge to 200 kg, aligning the blasting direction parallel to the slope, and preserving approximately 5 m of rock wall along the slope edge. Protective infrastructure was enhanced by installing two protective nets on a cleaning platform mid-slope, excavating a 7 m-deep and 20 m-wide stone protection ditch at the foot of the slope, building a 2 m-high stone protection wall using crushed stones outside of the ditch, and erecting a 2 m-high isolation net outside the protection wall. These safety measures were complemented by auxiliary monitoring methods to enhance the safety of blasting operations and protect the crushing system. Field inspections confirmed that the construction methods effectively ensured the stability of the high-steep slopes and minimized risks during blasting.

high-steep slope  /  mining blasting  /  safe construction  /  active protection and passive protection
Jing-jing CHEN, Wan-qing LIN, Yi LIU. Safety-controlled Blasting Technology for High-steep Slopes in Open-pit Mines[J]. Blasting, 2025 , 42 (2) : 105 -110 . DOI: 10.3963/j.issn.1001-487X.2025.02.013
Funding
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  • Open Fund of Key Laboratory of Safety Intelligent Mining in Non-coal Open-pit Mines, National Mine safety Administration (Accumulated Damage Characteristics and Buffering Loss Mechanism of Jointed High Steep Slopes in Non-coal Open-pit Mines During Blasting)(2024-K09)
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Year 2025 volume 42 Issue 2
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.02.013
  • Receive Date：2024-11-15
  • Online Date：2026-03-19
  • Published：2025-06-01
Article Data
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History
  • Received：2024-11-15
Funding
Open Fund of Key Laboratory of Safety Intelligent Mining in Non-coal Open-pit Mines, National Mine safety Administration (Accumulated Damage Characteristics and Buffering Loss Mechanism of Jointed High Steep Slopes in Non-coal Open-pit Mines During Blasting)(2024-K09)
Affiliations
    1.Hongda Blasting Engineering Group Co., Ltd., Guangzhou 510623, China
    2.Beijing CAS-Mechanics Blasting Co., Ltd., Beijing 100089, China

Corresponding:

LIU Yi (1974-), male, master's degree, senior engineer, mainly engaged in Mining blasting, (E-mail).
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Citations
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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