Introduction
Earth physics exploration, is a combination of many advanced geophysical methods, mainly aimed at discovering or mapping subsurface geological and structural features of the earth such as geological structure, geological structure, geological evidence and other hidden geologic objects. The aim of the exploration is to provide timely and accurate information for development decisions, risk assessment and planning of earthquake disaster prevention and control, engineering geology and various land-based engineering activities.
Geophysical Exploration
Earth physics exploration methods mainly include seismic exploration, gravity exploration and electrical exploration. Seismic exploration is an important technique used in earth physics exploration. It is a method of propagation, reception and measurement of elastic waves generated artificially and which propagate in the earth. Seismic exploration has many advantages such as high mapping accuracy, clear observed image, obvious deep features and easy automation. Gravity exploration measures the Earths gravity field with a gravity meter and calculates the density distribution of the subsurface structure. The gravity exploration can be used for detection of Mohorovicic discontinuities, important structures in deep exploration, ore bodies and other objects. Electrical exploration uses electrical instruments installed on the surface of the ground to measure the electrical properties of the subsurface and then obtains information about the subsurface structure. By using electrical exploration, the properties of formations containing certain mineral resources can be detected.
Application of Earth Physics Exploration
Earth physics exploration can be widely used in geological prospecting, engineering geological engineering and earthquake engineering. In mineral exploration and engineering geological engineering, seismic exploration or electrical exploration can be used to detect shallow buried objects on the premise of constructing a two-dimensional or three-dimensional geological model. In seismological prospecting, seismic exploration can be used to identify faults, buried faults and other geological structures; electrical exploration can be used to detect ore bodies or deeply buried faults. In engineering geological engineering and earthquake engineering, earth physics exploration can be used to identify seismic stability and landslide area, etc. At the same time, it can also be used in military defense, aviation, highway engineering and oil and gas fields in the engineering project.
Conclusion
Earth physics exploration is an important part of geophysical exploration, and plays an important role in the construction of engineering projects and the exploration of mineral resources. Through the application of seismic, gravity and electrical exploration, we can observe the deep structure of the earth, detect ore bodies and buried structures, and finally obtain accurate geological information. Earth physics exploration is a combination of a large number of advanced geophysical methods, and has played and will continue to play an important role in various geological exploration and engineering construction activities.
