Analysis Of Causes Of Deformation House Damage In Coal Mining Area Based On Multiple Factors

This paper studies and analyzes the damage and deformation of some houses in A Village,Huaibei City.It mainly analyzes the deformation characteristics of A houses in the study area by collecting data,on-site investigation,drilling sampling and testing,numerical simulation analysis and other methods.The coal mining activities,drainage and drainage,stability of the foundation and some other factors in the deformation of the house,and comprehensive analysis of the main reasons for the damage of houses in Songzhuang Village,the main findings are as follows:1.According to the survey,the damaged houses accounted for 92% of the total number of houses surveyed.The damage was mainly caused by cracking,with slight damage,and slight damage accounted for 79.1% of the total number of damaged houses;there was no obvious law in spatial distribution.2.According to the numerical calculation method,the influence range of Zhuzhuang Coal Mine surrounding the Village is estimated to be 82.10 ~171.40 m,and the influence range of Tuxingbei Coal Mine is 46~113.7m;FLAC simulation analysis of Zhuzhuang Coal Mine has an impact range of 69~81m,soil type The impact area of Tuxingbei Coal Mine is42 ~ 52 m.The boundary of the mining boundary between Zhuzhuang Coal Mine and Tuxingbei Coal Mine is about 210,230 m away from the village boundary of the Village.The affected area has not reached the village boundary of the Village.The mining subsidence has no deformation to the houses of the Village.direct impact.3.In this paper,the "Deep Well Method" is used to predict the radius of influence of coal mine drainage.The analysis results show that the influence radius of the nearby soil-type north coal mine is about 348 m.The drainage radius of Zhuzhuang Mine is small,and most houses in the Village are in the drainage.Within the scope of influence.4.According to the investigation,it is known that the houses in the Village are mainly masonry structures,basically without ring beams,and have poor resistance to deformation;the distribution of soil foundation of the house is stable,the bearing capacity is high,the sand in the lower part will not be liquefied,and the stability of the foundation is better.it is good.5.Comprehensive analysis of the main cause of deformation and damage of the Village is mainly due to the formation of large-area landing funnels during the mining of nearby coal mines,resulting in a drop in the groundwater level,resulting in an increase in the effectivestress of the upper soil,and the soil is compacted to form the ground.At the same time,under the vertical infiltration of the upper silt and sand layer,the soil structure is deformed to some extent due to the influence of the erosive action,causing uneven deformation of the foundation soil,which eventually leads to deformation of the house with poor resistance to deformation damage.Figure [38] table [16] reference [56]...