The Law Of The Earth's Surface Movement Of Crowd Exploitation On Closely Horizontal Coal Seam

On the foundation of the item of "The Law of the Earth's Surface Movement Crowd Exploitation on Closely Horizontal Coal Seam in Songzao Mine Affair Bureaux" with Chongqing university, the text has put forward the research of the law of the earth's surface movement of crowd exploitation on closely horizontal coal seam and the characteristic of destruction, on the study by scholars from the home and abroad about the sinking of mine, of the prevention measures, and of the present situation of this research.Basing on the particularity of mining " under buildings, under railroad, under waters ", the text has analyzed the characteristic of moving and changing of rock and coal caused by mining activity, and has made out the type and the law of the surface movement and distortion, specially when mining.According to the geological structure of mining area and the existing of the mine, the text has described the principle set up the observation station, and with advanced instrument and unique test method, has accomplished a lot of tests on different working faces, of the sinking and surface movement, which provided the base for further research.It also has used the MATLAB data base to deal with thousands of data, which has corrected the data, and has raised the accuracy of the resultBy the finite element method and ADINA's structural analysis program, it has simulated the sinking, and has defined the sinking law and the change of movement parameters (time, depth and mining for the second time etc), from which it has predicted the movement of next mining step.On the study above, it has defined the surface geological effect (slope effect, free face effect, weak face effect, base effect and diving effect etc) and the characteristic of surface destruction, and the effect on sinking and surface movement by geological and mining condition, and also the effect factor of which. It has made out the "three rules" for protection of buildings, which has got effective application in Songzao.In a word, the thesis has studied and has made clear the law of sinking and surface movement of crowd exploration on closely horizontal coal seam in Songzao, and the research has great theory value and real meaning.