Research On Surface Subsidence Laws Of Shallow Thick Coal Mining In Wuyang Coal Mine And System Development

The precise prediction on mining subsidence is a precondition in order to safetyproduction and subsidence control. In this thesis, the author especially focus on stratamovement parameters, surface subsidence laws, and finding the reasons of surfacecrack’s development, the cracks distributing laws, the obtained the calculation formulaof the crack’s limit depth and width, given the crack position’s judgment principles inthe light of the observation data. All of this provided theoretical basis for the preciseprediction of mining subsidence. The subsidence prediction software on the shallowthick coal seam was developed with Matlab software on the basis of the surfacesubsidence laws. The7511and7512working face’s movement and deformation werepredicted when the system has been finished. The buildings’ damage ranks and areaswere got on the result of prediction. The application results show that the system isconvenient to use, the calculated results are accurate and reliable, visual effect is good,and can meet the demands of the Wuyang coal mine’s ground movement anddeformation prediction. Also the system can be use at similar conditions of coal minefor the mining design of the workface, land reclamation and decision making.