物探方法在区域地质调查中的应用

The Application of Geophysical Exploration in Regional Geology Survey

物探方法是利用地下岩土体的物理性质差异,使用仪器测试地下介质的物性数据,利用计算技术,反演推断出地下不同岩土体分布的一种无损快速的探测方法。不同的岩土体具有不同的密度、导电性、磁性等物理性质,根据不同的物理性质、采用不同仪器设备和方法进行测试,可以解决不同的地质问题。本文论述了高密度电法、重力、磁法在区域地质调查中解决基岩埋深、地下水情况、隐伏断裂位置及特征、矿产分布等地质问题的情况,选择适当的物探方法可以取得良好的地质效果。

Geophysical exploration is based on different physical property of rock-soil body to measure the rock-soil body physical-value by equipment, and inversely compute and distinguish different rock-soil. It＇s quick and non-destructive. Rocks and soils have different density, electrical conductivity and magnetic. It needs to apply different equipment and method for different physical property, to solve different geoscience problem. This paper discusses high density resistivity method, gravity method and magnetic method to solve geoscience problem in regional geology survey, for example, determining the depth of bed-rock and underground water, location and feature of hidden fault, mineral resources. Suitable geophysical equipment and method can acquire effective geological result.