1、M NM NM NM N电法勘探的原理电法勘探的原理可否探测到异常体的三个因素：异常体的大小距电极的距离电阻率的反差2.5D Helmholtz equationccrrrrIU,)()()()(2)(2ccyzzxxIUkU0)cos(),(),(dyykzyxUkzxUyywhere0)()()(mmmmmmmd20|)(|)(mddWmdd20|)(|)(mmWmmmwhere(ABMN)1 -(V/I)1 (V/I)s1 E1=(V/I)1-(V/I)s1(ABMN)2 -(V/I)2 (V/I)s2 E2=(V/I)2-(V/I)s2(ABMN)n -(V/I)n (V/I)sn E
2、n=(V/I)n-(V/I)sn 自由数据采集方式自由数据采集方式:ABMNABMN0.0010.0020.0030.00-110.00-100.00-90.00-80.00-70.00-60.00-50.00-40.00-30.00-20.00-10.000.00500.001000.001500.002000.002500.003000.003500.004000.004500.005000.005500.006000.006500.007000.007500.008000.008500.009000.009500.0010000.0010500.0011000.000.0010.0020
3、.0030.00-90.00-80.00-70.00-60.00-50.00-40.00-30.00-20.00-10.000.00500.001000.001500.002000.002500.003000.003500.004000.004500.005000.005500.006000.006500.007000.007500.008000.008500.009000.009500.0010000.0010500.0011000.000.0020.00-110.00-100.00-90.00-80.00-70.00-60.00-50.00-40.00-30.00-20.00-10.000
4、.00500.001000.001500.002000.002500.003000.003500.004000.004500.005000.005500.006000.006500.007000.007500.008000.008500.009000.009500.0010000.0010500.0011000.000.0010.0020.0030.00-80.00-70.00-60.00-50.00-40.00-30.00-20.00-10.000.00500.001000.001500.002000.002500.003000.003500.004000.004500.005000.005500.006000.006500.007000.007500.008000.008500.009000.009500.0010000.0010500.0011000.00ZK10ZK1128mZK9ZK1024mZK8ZK926mZK7ZK828m320137220141#2#3A1B1A2#6#604104105332392A3B2B3C2A4C1
