With the continuous increase in mining depth of coal resources,the problem of mine roof water hazard will become increasingly severe.Therefore,the accurate evaluation of the water abundance of the coal seam roof water filling aquifer is crucial for the prevention and control of water in coal mines.This paper selects six main control factors:unit water inflow,permeability coefficient,sandstone thickness,flushing fluid consumption,core recovery rate,and thickness ratio of brittle plastic rock in the roof aquifer,and compares and analyzes the correlation between the water abundance of the coal seam roof directly filled aquifer and the main control factors by using the Pearson correlation coefficient method.We evaluate the posi-tive and negative correlation and correlation degree of each main control factor,and use statistical methods to calculate Pear-son correlation coefficient for quantitative comparative analysis of correlation degree,providing a basis for the evaluation of the water abundance of coal seam roof directly-filled aquifer.
关键词
矿井水害/顶板含水层/富水性/主控因素/Pearson相关系数/相关程度
Key words
mine water hazard/roof aquifer/water abundance/main controlling factor/Pearson correlation coefficient/corre-lation degree
维普
万方数据