关键词: 开采沉陷, 采煤塌陷区, 概率积分法, 残余沉陷变形, 地基稳定性

Abstract: The coal mining subsidence area in China has the features of large scale，wide range and low utilization rate， so it is of great significance to increasing the utilization of land in coal mining subsidence area.In order to scientifically evaluate the feasibility and suitability of land utilization in coal mining subsidence area，the theoretical calculation and engineering verification method are used to study the foundation stability in the subsidence area.On the basis of fully analyzing the characteristics and distribution of the old goaf below the study area，the residual subsidence deformation is calculated by using the probability integral method and selecting the reasonable prediction parameters.The influence depth of the construction load on the stratum above the goaf is calculated by the foundation additional stress method.The foundation stability of the old goaf is quantitatively evaluated by comparing the influence depth with the height of the fracture zone.The slope of the ground is considered comprehensively to help to determine building height.In order to ensure the safety utilization of the buildings，the technical measures against deformation of buildings based on residual subsidence deformation is proposed.The study results show that the study area will bear the I-level residual subsidence deformation in the later stage，the load influence depth will not affect the range of the fracture zone，and will not cause the activation of the old goaf，the application result verifies the reliability of the technical evaluation results；the construction on coal mining subsidence area and commercial development are feasible，which can effectively utilize the abandoned subsidence land resources with good ecological and social benefits.

Key words: Mining subsidence, Coal mining subsidence area, Probability integral method, Residual subsidence deformation, Foundation stability