By researching the curves of pile diameter,Q-s curves and the internal force curves of two impact-cone concrete piles,the influence of varying pile diameter on the bearing capacity and load transfer mechanism of the rock embedded short pile with post-grouting technology in deep sandstone filling soil area were discussed in the paper.

Taking the example of the Mesozoic reservoir in fault block Guan 142 of Huanghua depression,this article discusses the methodology of flow units in thick sandstone reservoir.

Using sedimentary facies control of reservoir physical properties, the paper puts forward a facies-controlled model to predict physical property parameters of sandstone reservoirs between wells and to research sandstone thickness as well as lateral distribution of reservoir porosity and permeability by building a model of reservoir physical property parameters.

the method , s precision(70%)was proved through predicting sandstone thickness of different sand body and well pattern density of Beierdong dense well pattern testing area.

A practical engineering on deep fill treated by dynamic consolidation is introduced in this paper,especially, the design parameters,construction, and effect observed are briefly discussed and analyzed.

This thesis is completed on the basis of the Ministry of Railways complex test--the study for different fill depth on the cover slabsof the culverts on Qinhuangdao-Shenyang dedicated passenger line.