Research Of Surface Movement Regularity On The Extremely Incompletely Mining Conditions

The large-scale exploitation and utilization of underground coal resources, makes the country’s modernization smoothly; and surface subsidence generated by the exploitation of underground coal resources makes that ecological environment, buildings and structures in mining area is destroyed. Due to the complex geological and mining conditions, extremely incompletely mining condition is frequently encountered. So on research of surface movement regularity caused by the mining subsidence is very necessary.The paper elaborates basic theory of surface movement briefly; analyzes commonly used algorithms in the process of the probability integral method to estimate parameters obtained and explores surface movement prediction method on the extremely incompletely mining conditions. Taking150603face on the extremely incompletely mining conditions of Xinji First Coal Mine as example does similar material simulation experiment on movement regularity of overlying rock including total station measurement and digital close range photography measurement. The results show that influence on surface movement caused by extremely insufficient mining is very small. Surface movement observation station is set up on the workface. Get surface movement estimate parameters obtained on the extremely incompletely mining conditions, such as subsidence coefficient q, horizontal movement coefficient b,tangent of major influence angle tgβ, the inflection point of moving distance s0, effect of transmission angle θ0;then makes the prediction of surface movement and deformation and master basicly regularity of surface movement on the geological and mining conditions.In this paper, VB language is compiled for surface movement observation station data processing program. The results of this study play an important guiding role on regularity of surface subsidence on similar geological mining conditions.