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动态瞬变电磁技术在甲玛铜多金属矿 隐蔽水害探查的研究与应用
米玛顿珠1，刘百祥2，李亚军1，殷建康1，李栋1，姚志忠1，李甫龙1
- 作者单位：
- （1. 西藏华泰龙矿业开发有限公司；2. 中煤科工集团重庆研究院有限公司）
基金项目：
- 重庆市科技计划项目（CSTB2024NSCQ-MSX0783）
详细信息：
- 作者简介：
- 米玛顿珠（1998—），男，助理工程师，研究方向为地质工程；E⁃mail：mmdz1123@163. com
- 通讯作者：
- PDF下载
Research and application of dynamic transient electromagnetic technology in detecting concealed water hazards at Jiama copper polymetallic mine
- English Author：
Mima Dunzhu¹, Liu Baixiang², Li Yajun¹, Yin Jiankang¹, Li Dong¹, Yao Zhizhong¹, Li Fulong¹
- Unit：
- （1. Xizang Huatailong Mining Development Co., Ltd.; 2. CCTEG Chongqing Research Institute）
- 摘要
- 在线预览
- 参考文献
摘要:
甲玛铜多金属矿作为国内海拔最高、规模最大的斑岩型铜矿之一，随着开采深度突破4 300 m，深部采掘工程面临隐伏导水构造与岩溶裂隙水的双重威胁。对动态瞬变电磁探测技术在甲玛铜多金属矿的应用进行优化，系统开展了隐蔽水害精准探测方法研究。通过分析隐蔽水害特点，建立典型含水体正演模型并进行三维数值模拟，分析感应电场传播规律与响应特征；改进动态瞬变电磁成像算法，实现井下瞬变电磁信号的高精度实时解译。通过开展不同线圈、发射电流、叠加次数及发射频率的参数试验，优选出适配甲玛铜多金属矿的最佳探测参数。现场试验表明，该技术实现了高阻围岩背景下低阻异常体（视电阻率<6 Ω·m）的精准提取，快速锁定隐蔽水害位置，为甲玛铜多金属矿安全开采筑牢地质保障，并为水害防治开拓新思路。
关键词:
隐蔽水害；瞬变电磁法；典型含水体；三维正演；参数试验；动态成像
Abstract:
The Jiama copper polymetallic mine, one of China’s highest⁃altitude and largest porphyry coppermines, faces dual threats of concealed water⁃conducting structures and karst fissure water as mining depths exceed4 300 m. This study optimizes the application of dynamic transient electromagnetic（TEM）detection technology for themine and systematically develops precise detection methods for concealed water hazards. By analyzing the characteristicsof concealed water hazards, forward models of typical aquifers were established, and 3D numerical simulations wereconducted to investigate induced electric field propagation and response characteristics. The dynamic TEM imagingalgorithm was improved to achieve high⁃precision, real⁃time interpretation of underground TEM signals. Parameter testsinvolving different coil configurations, transmitting currents, stacking numbers, and detection frequencies were carriedout to determine the optimal detection parameters for the Jiama copper polymetallic mine. Field tests demonstrated thatthe technology enabled accurate extraction of low⁃resistivity anomalies（apparent resistivity <6 Ω·m）within high⁃resistivitysurrounding rock backgrounds, rapidly locating concealed water hazards. The results provide a robust geological safeguardfor safemining operations at Jiama copper polymetallicmine and open new avenues for water hazard prevention and control.
Keywords:
concealed water hazard; transient electromagnetic method; typical water⁃bearing bodies; 3D forward modeling; parameter experiments; dynamic imaging
