Analysis Of Relationship Between Ground Stress Field And Geological Structure At East-Ⅲ Mining Zone, Liuzhuang Coal Mine

In the recent years, the economy of China continuously and rapidly grows and the demand to the coal is growing, so it requires the increases in coal mining to meet the needs. Geological structures and gro-stress field are the important geological factors affecting coal mining.Because of various faetors,geostress can not be measured in a large qantities,and the results are alsodiserete to a certain degree. By numerical simulation and the measured data about ground stress,this article analyzes the distribution of ground stress field and the relationship that it is between ground tectonic stress field and geological structure in East-Ⅲ Mining Zone,Liuzhuang Coal Mine.The follow results has been made in the paper:1) From the overall analysis of huainan coalfield structure formation and the ancient tectonic stress field is analyzed, it is concluded that the structure of the mining framework is the result of the movement form.2) The liuzhuang mine strata and coal seam are briefly analyzed, and the structure characteristics have been analyzed which is concluded faults, common development with normal fault is given priority to, accounting for97.54%of the total number of fault; Reverse fault less, only for10, accounting for2.46%of the total number of faults. Fault has obvious to the sex, the direction of the north east to main fault combination with north west fault combination. Style with radial plane distribution of fault formation, such as "into" the word type structure, mesh type, etc.; The combination of fault on the profile form are graben and horst and trapezium fault combination..3) Based on the analysis of geological characteristics in East-Ⅲ mining Zone, Liuzhuang Coal Mine,The author has used FLAC3D numerical software to establish a geological model. Analysis of distribution of ground stress field near the fault rock lithology13-1coal as well as ground stress contours through numerical simulation, the following conclusions are made:1)The stress is unloaded in the middle of fault. In a certain range.it is greater farther from fault about stress value.2) Affected by the stratum lithology, the same depth of ground stress values are different.3) The normal fault footwall appear stress concentration phenomenon.