摘要
本研究旨在精确评估赤城县某矿区深部采空区围岩的稳定性及其安全性。通过综合应用天然源音频大地电磁法(EH-4)、瞬变电磁测量(TEM)及PLAXIS有限元程序,对该矿区进行了深入探测和稳定性分析。研究区采空区的跨度范围10~30 m,研究发现顶板安全厚度5.0~25.98 m,典型剖面的地下采空区总位移最大值达到了2.295×10^(-3) m。计算结果表明,在考虑到采空区的深埋、顶板岩性的完整性及岩体的高抗压强度的条件下,该矿区的采空区整体及局部稳定性良好。本研究不仅为深部采空区的稳定性评估提供了一个综合分析方法,同时也对地下工程安全与环境保护具有重要的理论与实践意义。
This study aims to precisely evaluate the stability and safety of surrounding rocks in a deep goaf area of a mine located in Chicheng County.By integrating the application of Natural Source Audio-frequency Magnetotellurics(EH-4),Transient Electromagnetic Measurement(TEM),and the PLAXIS finite element program,an in-depth detection and stability analysis of the mine area was conducted.The span of the void area ranges from 10 meters to 30 meters,revealing that the safe thickness of the roof varies between 5.0 meters and 25.98 meters.The maximum total displacement of the typical section of the underground goaf reached 2.295×10^(-3) meters.These results indicate that the overall and local stability of the mine's void area is good,considering the deep burial,integrity of the roof lithology,and the high compressive strength of the rock mass.This research not only offers a comprehensive analysis method for the stability evaluation of deep goaf areas but also holds significant theoretical and practical implications for underground engineering safety and environmental protection.
作者
赵鹏
王铎道
刘仕刚
周凡超
曲为贵
ZHAO Peng;WANG Duodao;LIU Shigang;ZHOU Fanchao;QU Weigui(Tianjin North China Geological Exploration General Institute,Tianjin 300170,China;Tianjin North China Geological Explora-tion General Institute Co.,Ltd.,Tianjin 300170,China)
出处
《矿产勘查》
2025年第S1期267-273,共7页
Mineral Exploration
关键词
赤城县某矿区
地下采空区
地表沉降
稳定性评估
mine in Chicheng County
underground goaf
surface subsidence
stability evaluation
