基于TEM的铁矿灰岩富水区探放水综合治理研究

Study on the Integrated Treatment of Exploration and Water-discharge in a Water-rich Area of Iron Mine Based on TEM

某铁矿为典型的岩浆岩侵蚀形成的矽卡岩型矿床,地层破碎形成富水区,积水量大,严重威胁了矿区安全生产。针对该铁矿富水区水量大、范围广、威胁大、探测难、探放水复杂等难题,提出了一套适用于金属矿山富水区积水疏放的综合探放水技术。将等效参数法运用于大功率瞬变电磁探测中,用以区分传统瞬变电磁法难以区分的矿体和水体。根据大功率瞬变电磁法探测结果,并与地质资料和实际钻探数据相互验证、补充,确定富水区空间位置及大小,进而进行探放水设计,确定探放水方案。在探放水前,为了查明不同富水区之间的水力联系,优化探放水设计方案,提高探放水治理时的可控性,同时保证矿区生产区域的安全生产,在不同富水区之间进行了连通性试验,并对存在安全隐患的区域进行了及时处治,保障了矿山安全生产,为类似金属矿山综合探放水治理提供了有益借鉴。

An iron mine is a typical skarn deposit formed by magmatic rock erosion.The formation fractures form a water-rich area with a large amount of water,which seriously threatens the safe production of the mining area.In view of the problems of large water volume,wide range,large threat,difficult detection and complicated water exploration and drainage in the water-rich area of the mine,a set of integrated exploration and water-discharge technology suitable for water drainage in metal mine water-rich areas is proposed.The equivalent parameter method is applied to high-power transient electromagnetic detection to distinguish between metal and water that are difficult to distinguish by conventional transient electromagnetic methods.According to the detection results of high-power transient electromagnetic method,and through the mutual verification and supplement of the geological data and actual drilling data,so as to determine the spatial position and size of the water-rich area in the mining area,and then carry out the design of exploration and release water to determine the exploration and release water scheme.Before releasing water,in order to find out the hydraulic connection between different water accumulation areas,optimize the exploration and drainage water design plan,improve the controllability of the exploration and release water treatment,and ensure the safe production of the production area of the mining area,the connectivity test is carried out in different water accumulation areas,and the areas with potential safety hazards are treated in time to ensure the smooth progress of the water.It guarantees the safe production of mines and provides beneficial reference for the integrated exploration and release of water in similar metal mines.