We acquired deformation in the Beijing Plain between February, 2010 and December, 2018 and calculated the additional stress derived from building loads. We found that the depth of influence of additional stresses was 80 m and that spatial distribution pattern of the land subsidence rate agreed well with the additional stress. Time series analysis of PS around Ciqikou station shows that land subsidence caused by excavation activities mainly occurs in the period of metro construction.

We developed a method to characterize the distribution and variance of the hydraulic conductivity k in a multiple-zone alluvial fan by fusing multiple-source data. Consistently with the scales of the sedimentary transport energy, the k variance of the various facies decreases from the upper to the lower portion along the flow direction. The 3-D distribution of k is consistent with that of the facies. The potentialities of the proposed approach are tested on the Chaobai River megafan, China.

The earth fissures of geological structure are visualized in three dimensional domains through a volumetric modeling method. The topological relations between TIN, triangular prism and lines are constructed for further spatial calculation. This method can facilitate the mechanism for studying fissures.