航空物探试验场地面地球物理场特征分析

航空地球物理探测技术是地质和矿产勘查的重要手段,其探测能力主要取决于测量系统及测量方法的有效性,而测量系统及测量方法有效性的提高,又需要专业的检验平台(航空物探试验场)。因此,在我国建立专业的航空物探试验场十分必要。本文搜集了我国某航空物探试验场的地质地球物理资料,在试验场设计并完成了重力、电阻率测深、瞬变电磁工作。通过对实测资料的处理和研究,将试验场划分为三个大的异常区,确定了试验场内的两个较大的断裂和一个次级断裂。本文在国内首次以专项工作的方式为航空重力及电磁法测量提供了高精度的参考数据,从而为国内航空地球物理测量系统检验和方法研究提供了综合平台。并且通过多种物探方法建立标准场的实践认识到,通过有效的选址,在充分利用已有的地质、地球物理(地面、航空)及测绘等资料的基础上,可以完善建成综合试验场,为航空物探飞行测量提供可靠的高精度对比资料。

The Analysis of Geophysical Characteristics of Airborne Geophysical Testing Ground

Airborne geophysical detection technology is an important means of geological and mineral exploration, and its detective ability mainly depends on the validity of the measurement system and methods. The improvement of measurement systems and methods needs a professional inspection platform -Aviation Geophysical testing ground. There- fore, it is essential to establish a professional airborne geophysical test site in our country. This paper collected geological and geophysical data of one airborne geophysical testing ground in our country. Gravity, resistivity sounding, transient electromagnetic work are completed in the testing ground. The area is divided into three large anomalous areas, ac- cording to the treating and analysis of actual data. Two large fault zones and a secondary fault are ensured. This paper is the first time in China providing high accuracy data for air- borne gravity and electromagnetic measurement method by the means of special work, so as to provide a comprehensive platform for domestic airborne geophysical survey system test and method research. By the practice of variety of geophysical methods, a valid field selec-tion, and in the full use of geological, and mapping data, a comprehensive te rate comparison reliable data for airbo geophysical existing （ground, air） and the surveying st field can be established, which provides high accu rne geophysical flight measurement.