In the gravity survey, especially in the gravity survey of the Quaternary cover areas, it is of great significance to accurately determine the density of loose sediments for the correction, processing, inversion, interpretation and study of gravity data. For a long time, the density of loose sediments has always been determined by regular bulk sample method in the field of gravity survey. However, it is difficult for this method to obtain a regular sampling pit in field work. Therefore, there is a large error between the volume of sampling pit obtained from the calculation formula of regular shape and the volume of actual sampling pit, which leads to inaccurate measurement of density value of loose sediments. This paper presents a method which is the irregular hexahedron volume calculation method. This method is more suitable for the actual situation in the field, and can improve the traditional regular bulk sample method. This method can determine the density of loose sediments more precisely and raise the working efficiency.
耿涛, 冯凡, 杜辉, 冯治汉, 郭培虹. 重力勘查工作中基于大样法的松散沉积层密度测定方法的改进[J]. 物探与化探, 2021, 45(1): 165-172.
GENG Tao, FENG Fan, DU Hui, FENG Zhi-Han, GUO Pei-Hong. The improvement of density measurement method of loose sedimentary based on large sample method in gravity survey. Geophysical and Geochemical Exploration, 2021, 45(1): 165-172.
Geng T, Liu K H, He H, et al. Some problems concerning regional gravity survey in difficult areas and their countermeasures[J]. Geophysical and Geochemical Exploration, 2012,36(5):749-754.
