Study On Building Damage Assessment In Coal Mine Area

With the development of all walks of life in our country,the demand of energy,especially coal resources,is increasing day by day.The exploitation of coal resources leads to the imbalance of the original stress of the surrounding rock strata,which causes the movement and deformation of the rock strata and the surface,and the destruction of the surface ecological environment and buildings.In order to minimize the impact of mining subsidence and reduce the damage to the buildings above the mining area,it is necessary to deeply understand the law of surface movement and deformation,master the impact of mining subsidence on the buildings,predict the surface movement and deformation after coal mining,determine the degree of the buildings affected by mining,and provide basic information for the damage identification of the surface and the buildings above the mining area Material.On the basis of reading a large amount of literature and collecting information about geological mining in the study area,the surface movement deformation law and surface movement deformation index of the mining area are theoretically explored,and the construction is deeply analyzed from two aspects: mining factors and non-mining factors.The specific cause of damage.Taking the damage of the surface of the mining area and the above buildings in the three working faces of 8222,923 and 922 in Qidong Coal Mine as the research background,on the basis of summarizing the related research of the predecessors,the prediction parameters of the multi-working surface joint influence probability integral model are determined.Determine the geological mining conditions in the study area,use the mining area subsidence prediction and analysis system MSAS software to predict the surface movement deformation value,and determine the damage level of the two village buildings in the old area of Laomiaozhuang and Chenmiaozhuang in combination with the masonry structure damage rating table.And the scope of influence.Then use on-site investigation to determine the damage of the surface and the buildings above,understand the engineering geological conditions under the building,investigate the contents of the building damage questionnaire and photograph the number,evaluate the damage of the building according to the investigation content,and verify the mining subsidence of the mining area.The reliability of the law of surface displacement and deformation in the mining area is systematically studied.The results show that the damage of the buildings in the mining area is the result of multiple factors.The mining factor is the main factor affecting the damage of the building.The curvature and horizontal deformation have a significant impact on the building.The location of the basin where the building is located is different.The impact on buildings is also very different.The structural quality and engineering geological conditions of the buildings in non-mining factors play an important role in the building's ability to resist mining.