综合物探方法在东北某矿区的应用研究

发布时间：2018-04-19 06:56

本文选题：多样性 + 危机矿山　；参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：在早期的矿产勘探中采用单一的物探方法进行探测或者钻探,其盲目性比较大。加上物探解释的多样性,单一的物探方法不能实现对异常的精确解释,无法 .准确判断构造带的特征,根据单一的物探方法布设钻孔,其依据并不充分,钻孔见矿率低,造成比较大的经济浪费并且延误工期。东北某矿区最早于1959年开始开采,50年后成为危机矿山。为缓解矿区后续资源量问题,维持矿山可持续发展,对矿区外围开展以综合找矿为目标的物探勘查工作。本文以东北某危机矿山为例,展示利用多种物探方法对矿山的研究工作。首先利用航磁异常结果,确定成矿有利地带;然后利用伪随机电法扫面工作,圈定大致的激电异常分布范围;利用激电测深和重力剖面工作,比较直观的反应基岩断裂带在断裂上的分布形态以及深部延伸。根据重、磁和电法勘探有效划分成矿构造带,并通过钻孔验证,开采出黄铜矿和黄铁矿等。通过对矿区采用综合物探方法进行研究,研究总结出矿山勘探的成果以及最佳组合方法。可较准确的划分成矿构造带,有效确定钻孔中心位置。对今后类似矿山的勘察工作具有指导或者参考意见。
[Abstract]:In the early mineral exploration, single geophysical exploration method is used for exploration or drilling, which is quite blind.Combined with the diversity of geophysical interpretation, a single geophysical method can not accurately explain anomalies.According to the single geophysical exploration method, it is not sufficient to determine the characteristics of the structural belt, and the drilling rate is low, which results in a large economic waste and delays the construction period.A mining area in Northeast China began mining in 1959 and became a crisis mine 50 years later.In order to alleviate the problem of the following resources and maintain the sustainable development of the mine, the geophysical prospecting work aimed at comprehensive prospecting is carried out on the periphery of the mining area.Taking a crisis mine in Northeast China as an example, this paper shows the research work of mine by using various geophysical prospecting methods.First of all, using aeromagnetic anomaly results to determine the ore-forming favorable zone; then using pseudo-random electrical sweep surface work to delineate the distribution range of induced electrical anomalies; using IP sounding and gravity profile to work,The distribution pattern and deep extension of the reaction bedrock fault zone on the fault are more intuitionistic.According to gravity, magnetic and electrical exploration, the ore-forming structural zones are effectively divided, and the chalcopyrite and pyrite are mined through drilling verification.Through the study of comprehensive geophysical exploration method in mining area, the results of mine exploration and the best combination method are summarized.The ore-forming structural zone can be divided more accurately and the central location of borehole can be effectively determined.It has guidance or reference for the exploration work of similar mines in the future.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P631

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