关键词: 建筑物下开采, 开采沉陷, 超高水材料, 充填条带, 地表变形

Abstract: In order to recover the coal resources under buildings,taking the geological mining conditions of a developing fault area in Handan mining area as the research background,and based on the super high-water material filling mining technology,and the working surface layout of the filling strip method and falling strip method was proposed.Based on the analysis of the expected parameters of surface deformation,the basic principle of probability integral method is used to predict the surface deformation,optimize the mining scheme,and propose the safety mining technology.The results show that the use of filling strip method can realize coal resources of 33017 million tons,the recovery rate of 70%,the largest surface subsidence 1 390 mm,the maximum tilt of 109 mm/m,while the use of falling strip method can realize coal resources of 21688 million tons,the recovery rate of 45%,the largest surface subsidence 1 420 mm,the maximum tilt of 109 mm/m.Therefore,the super-high water material filling strip mining method is recommended.This method provides the theoretical basis and technical reference for the exploitation of coal resources under the similar condition of geological mining.

Key words: Mining under buildings, Mining subsidence, Super high-water material, Filling strip, Surface deformation