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地层陷落柱在煤田地质勘探和煤矿生产中经常遇到,塌陷严重时通过地表可以确定其大小和形态,塌陷较轻时从地表无法判定。现阶段陷落柱主要通过三维地震以及其它地面电法勘探方法来判定,但最切合实际的方法是通过测井曲线物性特征的对比分析,来确定煤岩层标志层的缺失以及断层带和陷落柱的区别。该文通过某勘探区505号钻孔的测井曲线,结合钻探岩性取芯综合对比分析来判定陷落柱。
Stratum collapse columns are often encountered in coalfield geological prospecting and coal mine production. When the collapse is serious, the size and shape of the cave can be confirmed by the surface. When the collapse is slight, the surface can not be judged. At this stage, the collapse column is mainly determined by three-dimensional seismic and other terrestrial electrical prospecting methods. However, the most practical method is to determine the absence of the marker layer of coal and rock by the comparative analysis of the physical characteristics of the logging curve, the difference. In this paper, through the well logging curve of No. 505 drilling exploration area, combined with the comparative analysis of coring of drilling lithology to determine the collapse column.