Comprehensive study of parameters of probability integral method of mining subsidence in urban planning areas of Jining City

There are overlapping areas between Jining designated urban planning area and more than twenty operating production coal mine areas,which plays an important role in mastering the mining subsidence law of the Jining urban planning area and providing a reference for Jining urban planning. The observation station of t he Daizhuang mine in the urban planning area has been collected and sorted,and based on the comprehensive analysis data and the results analysis data of 20 observ ation lines of 13 coal mines,the correlation between the parameters of the probability integration method of each mine and the mining depth,mining height,surface soil t hickness and full mining degree was comprehensively analyzed. The research results show that the subsidence coefficients of the study area has a strong correlation W ith the degree of mining depth and mining degree,that is,the subsidence coefficient shows an increasing trend with the increase of mining depth,and shows a decreasin g trend with the increase of mining depth. In addition,the influence degree of the various factors on the subsidence coefficient is expressed as follows: the thickness of t he surface soil layer>mining depth >mining height. The horizontal movement coefficient does not have distinct relationship with the thickness of the surface soil layer,mi ning depth,mining height and mining degree. But after statistical processing,it is found that there is a local quadratic function relationship with the thickness of the surfa ce soil layer. The main influence is that the angular tangent and the thickness of the surface soil layer have a local linear correlation and are restricted by the mining de pth,showing an increasing trend with the increase of mining depth,and there is a"wave "type functional relationship with the mining height locally.