起伏巷道直流电阻率法超前探测数值模拟

Numerical Simulation of Advanced Detection With DC Resist ivity in Fluctuation Tunnel

巷道空间本身的存在会影响其周围电流场的分布。对于起伏巷道的情况,利用ANSYS有限元软件建立矿井待掘巷道超前探测三维地电模型并进行正演模拟,通过计算分析,得到起伏巷道会使视电阻率极小值和异常范围减小,但并不改变视电阻率极小值所在位置,特别是倒V字形巷道的影响更加明显。对于实测资料的解释,巷道起伏仅是其中的1个影响因素,应多参数综合考虑,以提高解释精度。

The existing of roadway space will affect the distribution of cmTent field around it. For fluctuation tunnel, based on ANSYS, an advanced detection 3D ground electric model of the mine roadway was established to carry on ANSYS forward, tt was conclude that the flucluation tunnel caused the apparent resistivity minimum and abnormal range decreased, but did not change the location of the ap- parent resistivity minimum, especially the inverted ＂vT - shaped roadway effect. For the interpretation of the measured data, the fluctua- tion tunnel is just one of the influencing factors of roadway. Consequently, in order to improve the interpretation accuracy, multi -pa- rameter should be laken into account.