龙固井田新生界岩性主成分分析研究

摘要

系统地分析了龙固井田研究区8个钻孔资料,以粗砂岩、中砂岩、细砂岩、砂质黏土、黏土和泥岩厚度为评价因子,运用主成分分析法、利用Matlab软件和SPSS软件研究了龙固井田新生界底界向上40m范围岩性特征,并与以往的平均值法进行了比较,发现两者仅在细砂岩和泥岩的排名上有差异,但是主成分分析法能综合研究区的各方面因素来评价岩性特征及排名情况,其结果更符合研究区的实际情况,其结果的准确性保障了煤层开采时划分顶底板含水层、隔水层区域的全面,能有效地减少煤矿突水事故.%On the basis data analysis of 8 drill-holes from Longgu mining field,applying principal component analysis method and taking thicknesses of coarse sandstone,medium sandstone,fine sandstone,sandy clay,clay and mudstone as evaluation factors,this paper researched lithological characteristic of rock stratum at the range of 40m over Cainozoic bottom with Matlab and SPSS software.Comparing analysis result with previous result by average value method,it was discovered that only influence sequence of fine sandstone and mudstone was different,but the result of principal component analysis method met actual situation better because it comprehensively considered every factor.The precise analysis result ensured correctly marking off aquifer and aquiclude and could reduce water-burst disaster in mine.