Journal of Geological Research

Abstract:

In order to study the hydrocarbon-generating potential of Carboniferous-Permian coal shale in Jiyang Depression, geochemistry, petroleum geology and coal geology were applied to study the residual strata distribution of Carboniferous-Permian in Jiyang Depression, organic matter abundance, organic matter types and organic matter maturity of mudstone. The results show that the thickness of the Carboniferous-Permian residual strata in Jiyang... More

Abstract:

We present a 3D inversion method to recover density distribution from gravity data in space domain. Our method firstly employs 3D correlation image of the vertical gradient of gravity data as a starting model to generate a higher resolution image for inversion. The 3D density distribution is then obtained by inverting the correlation image of gravity data... More

Abstract:

Stress-dilatancy relationship or plastic potential function are crucial components of every elastoplastic constitutive model developed for sand or cemented sand. This is because the associated flow rule usually does not produce acceptable outcomes for sand or cemented sand. Many formulas have been introduced based on the experimental observations in conventional and advanced plasticity models in order... More

Abstract:

The laws of thermodynamics have been developed for inert matter, and living matter has not been considered as a variable in these laws. Living matter possesses properties that have had major effects on biosphere evolution with time. The zeroth property is “Living matter is produced from living matter only.” The first property may be summarized... More

Abstract:

Several cave-in accidents often occur in subway construction, causing personnel and economic losses. This paper has carried on the statistics and analysis of some typical subway construction accidents in recent years. Taking the collapse accident of a subway station in Hangzhou as the engineering background, the causes of the collapse of the foundation pit were... More