Comprehensive evaluation method of stope stability and its application in deep metal mine

Area of Science:

• Mining Engineering
• Geotechnical Engineering
• Rock Mechanics

Background:

• Deep metal mining faces significant challenges due to high stress conditions, increasing the difficulty and cost of maintaining stope stability.
• Existing rock stability assessment methods often rely on empirical and analytical approaches, leading to uncertain and potentially unreliable results.

Purpose of the Study:

• To develop a comprehensive evaluation method for stope stability in deep metal mines.
• To address the limitations of traditional single-factor assessment methods by incorporating multiple critical factors.
• To enhance the accuracy and reliability of stope stability assessments for improved safety and economic viability.

Main Methods:

• A comprehensive evaluation method was developed, integrating factors such as stope stability, self-stabilization time, maximum safety span, and support measures.
• The proposed method was validated through field application in the Jiaojia Gold Mine.

Main Results:

• The comprehensive evaluation method demonstrated accurate assessment of stope stability from multiple perspectives.
• Results showed superior performance compared to traditional single evaluation methods, providing more reliable outcomes.
• Field application confirmed the effectiveness of the integrated approach in real-world mining conditions.

Conclusions:

• The developed comprehensive evaluation method offers a more reliable and accurate approach to assessing stope stability in deep metal mines.
• This integrated method enhances safety and economic efficiency by providing a more thorough understanding of stope structural integrity.
• The findings support the adoption of multi-factor evaluation for critical decisions in underground mining operations.