On the basis of meticulous analysis of sedimentary characteristics in Linnan sub depression, a series of description techniques for sandstone lithologic oil reservoirs are proposed which include recognition techniques of lithosome in undrilled areas, calibration and fine description techniques of lithosome.

Through the analysis of sinking watch of a workers high-layer residencial building in Guangxi,it brings forward methods of executing the sinking watch in complex area of high-building,elaborates the layout and constructing skill of base points and sinking points,points out that the severe constructing plan should be watched in order to ensure the quality of sinking watch.