高精度磁测在云南省德宏州某地区的应用,取得了较好的效果。采用规范的地面高精度磁测方法,取得可靠的磁测数据,圈定出磁异常。经过对资料处理与定性分析解释,推断出磁异常的成因,为开展下一步地质工作和找矿远景预测,提供了有效的地球物理依据。

The applications of high-precision magnetic survey in Dehong certain area of Yunnan Province, which had good effect. The canonical method of surface high-accuracy magnetic survey has been used, and we got credible magnetic survey data. The magnetic anomaly was also detected through this way. The magnetic anomaly causing was finally concluded through calculating and qualitatively analyzing the data. This also provided effective geophysical basis for next step exploration work and prospecting prediction in the future.

高精度磁测法是磁铁矿勘查中最常用且效果较好的物探方法。在对新疆西北部某多金属矿普查区进行了大比例尺高精度磁法测量后，进行系统的磁测资料处理与整理，对地质、物探、科研资料进行综合研究，进行找矿预测。通过分析高精度磁法勘探在多金属矿勘察的应用，配合基础地质调查，进行地质填图以及查找构造带；根据矿物磁性和与磁性矿物伴生的特点，进行直接找矿；根据矿床的成因在空间上与磁性地质体或构造有关的特点，进行间接找矿，从而说明了地面高精度磁法测量找寻多金属矿的可行性和有效性。

Precision magnetic survey method is a geophysical methods with good effect in the magnetite exploration. After measuring the northwest region of Xinjiang by using large scale precision magnetic survey method, it takes systematic magnetic survey data processing and sort, and makes a comprehensive study of geological, geophysical exploration, scientific data, does prospecting forecast. Through analyzing high-precision magnetic exploration in multi-metal mine reconnaissance, coordinating the geological survey, geological mapping and find tectonic belt; direct prospecting of mineral magnetic characteristics associated with magnetic minerals; in space and on the characteristics of the magnetic geological body or structure, indirect prospecting, ground high-precision magnetic survey to find the feasibility and effectiveness of the multi-metal ore.

为验证苍山县沟西地区航磁局部异常,运用地面高精度磁测、勘查线剖面高精度磁测和钻探验证等综合勘查方法进行评价,依据ΔT磁异常、高磁剖面异常和ΔT化极向上延拓100m磁异常特征,首先预测了隐伏铁矿体的空间位置、产状,进而实施钻探验证,发现了苍山县沟西大型隐伏铁矿床,取得了良好的找矿效果,经对比分析已知矿体和磁场特征,建立了地质—物探找矿模式。

In order to verify the regional aeromagnetic anomalies in Gouxi area of Cangshan county,by using complex exploration method,such as ground precision magnetic survey,precision magnetic survey of pros-pecting line profile and drilling verification,comprehensive evaluation has been carried out.Based onΔTmagnetic anomaly,high magnetic anomalies and magnetic anomalies by upwardΔTprofile 100m,spatial location and occurrence of hidden ore bodies have been predicated firstly,then carried out drilling verifica-tion,found Gouxi large scale hidden iron deposit in Cangshan county,and achieved good ore prospecting effect.After comparing and analyzing the known ore bodies and magnetic characteristics,geological-geo-physical prospecting model has been set up.

通过气动外形、电磁兼容、数据传输、信息处理、传感器结构设计等关键技术攻关,基于彩虹三国产长航时无人机平台,集成了一套新型固定翼无人机航空磁测系统,在黑龙江省嫩江县多宝山矿区开展了1∶1万大比例尺航磁测量试验,验证了全自主飞行、高精度测控、超低空地形跟随、全天候作业等关键性能,介绍了本次试验的结果及与有人机航磁系统的应用效果对比,标志我内首次使用无人机进行面积性高精度航磁测量获得成功。

A UAV-borne magnetic field trial survey was carried out in the Duobaoshan ore district, Heilongjiang Province, by using a novel fixed-wing UAV-borne magnetic system developed by IGGE. It is for the first time that a commercial trial survey by a UAV-borne magnetic system is reported in China. The field data quality, including dynamic magnetic noise and flight quality, accords well with the survey standard of the manned airborne magnetic survey. The advantages of UAV-borne survey, such as fully autonomous flight, pre-cisely-controlled flight quality, longer survey range, low flight clearance and all-weather operational capability, have been achieved. It will be a practical technique for the geophysical exploration.

地球物理勘查的每一种方法都存在多解性。为了提高解释结果的可靠性,充分发挥各方法的优势,使之取得地质上最佳勘查效果,在架子山地区矿床地质勘查中综合运用了高精度磁法、激电中梯测量和可控源音频电磁测深等地球物理勘探方法,取得了较好的勘查效果。经由钻孔验证,在765 m深度见矿厚度26 m,钼的最高品位5%。可控源音频大地电磁测深低阻带是良好的物探找矿标志,激电中梯的视充电率异常和高精度磁测梯度带也是找矿的重要标志。因此,CSAMT异常、视充电率异常和高精度磁测异常的组合是该区寻找深部银、钼隐伏矿体的重要物探标志。综合地球物理勘探方法的运用,在该区的矿产勘查中具有指导意义。

Every kind of geophysical exploration method has the problem of multiple solutions. In order to improve the reliability of in-terpretation results, give full play to the advantages of each method, and make the best of geological exploration results, the authors conducted integrated exploration of ore deposit and geology in the Jiazishan area, which included high precision magnetic method, IP measurement and controlled source audio-frequency electromagnetic sounding geophysical prospecting, thus achieving good exploration results. Drilling verification demonstrated that at the depth of 765 m there exists an ore layer 26 m in thickness, with the highest grade of molybdenum being 5%. The low-resistivity zone detected by controlled source audio-frequency magnetotelluric sounding can be regar-ded as good geophysical prospecting marks, and the apparent chargeability anomaly of IP medium gradient and the gradient belt of high precision magnetic survey can also serve as important indicators fo