云南冶金2025，Vol.54Issue(3)：19-24,6.
基于中长期微震时空特征的采动地压灾害风险分析
Risk Analysis of Mining-Induced Ground Pressure Disasters Based on Spatiotemporal Characteristics of Medium-and Long-Term Microseismic Activity
摘要
Abstract
Dynamic assessment and analysis of ground pressure disaster risks is one of the key technologies for safe and efficient mining in deep mines.Aiming at the current situation of rock pressure disasters in mining at depths exceeding 1 000 meters in the Maoping Lead-zinc Mine,a microseismic monitoring system for deep-seated rock pressure disaster risks was established by analyzing mining technical conditions.Blast positioning calibration tests were conducted,the velocity model of the system in key monitoring areas was optimized,and the medium-to long-term spatiotemporal distribution patterns of mine microseismic events were investigated.Finally,the risk distribution characteristics of rock pressure disasters based on microseismic monitoring were proposed.The research results indicate that by adopting a P-wave velocity of 5 400 m/s and an S-wave velocity of 3 200 m/s,the comprehensive positioning error in key monitoring areas is less than 7.4 m,meeting the monitoring requirements for rock pressure disaster risks in deep mine sections.Microseismic events are primarily distributed in excavation and stoping zones as well as barrier pillar areas,showing a positive correlation with mining activity.The Ⅱ-1# ore zone exhibits higher rock pressure risks,while the Hongjianshan area is prone to sudden,high-intensity rock pressure events.关键词
金属矿/深井开采/地压灾害/微震Key words
metallic ore/deep mining/rock pressure disaster/microquake分类
矿业与冶金引用本文复制引用
陈青,蒋合国..基于中长期微震时空特征的采动地压灾害风险分析[J].云南冶金,2025,54(3):19-24,6.基金项目
云南省基础研究专项面上项目"深部高应力节理岩体巷道垮冒机制及靶向支护技术研究"(202501CF070050) （202501CF070050）
