应用瞬变电磁技术对屯留煤矿南一采区赋水性分析

Analysis of the aquosity in Nanyi mining area of Tunliu coal mine with the transient eletromagnetic method

通过对钻孔以及强干扰区进行参数试验,确定了发射边框、发射频率、发射电流、采样延迟、高压线影响等施工布置参数;结合野外实测数据和钻孔测井资料,进行数据处理和反演,得出采区内的煤系地层与上下围岩有着明显的电性差异;采区北部富水性相对较强,中部和南部富水性相对较弱,F66断层和X26、X35、X79陷落柱是各煤层和奥灰岩的垂向导水通道。

The arrangement parameters including the transmitting circle,the transmission frequency,the transmitter current,the sampling delay and the high line interference,were determined basing on the parametric tests in bore holes and high-field interference region;the data treatment and inversion were deal with the combination of the field actual data and the borehole logging references.The results indicate that there is notable electric anomaly between up surrounding bed and down surrounding bed in the target area;the aquosity is relatively rich in the north of Nanyi mining area and poor in the middle and the south;F66 fault and X26、X35、X79 collapse columns are mainly vertical water conducting of the coal seams and Ordovician limestone.