详细介绍
*种方案:接收机1台,供电铜电极6个,500米电线,200节1.5v的电池,闸刀开关,不极化电极2个。
一、基本原理
1.接收机
测量参数:能测量地层剖面不同深度的电阻率PS,通过对不同深度的电阻率分析,可以寻找地下含水层(低电阻率),也能探测地下空洞等(高电阻率)。探测深度从几十米到几百米。
2.发送机
把电池或汽油发电机发出的电,变成超低频方波信号或双向电流长脉冲向地下供电,建立地下电场为接收机提供地面电场信号。
发送机的功率大小决定探测深度。
一千二百瓦可以探测50――100米,10千瓦可以探测300――500米。
3.主要技术特点
(1) 深浅层探测;
(2) 可对探测区域进行多方位、多点位探测;
(3) 可以计算机网络形式,对探测区域进行远程监控和远程数据传输;
(4) 可瞬间一次性完成多区域、多点位的探测。
二、主要应用领域
1.寻找地下水资源
(1) 探测地下1――500米水层;
(2) 用于干旱地区寻找地下水源;
(3) 用于山区、平原钻探水井的定位。
2.探测地下空洞、溶洞等
。
1. Basic principle
1.1 Receiver
Measuring the parameter: can measure resistivity Ps. of stratum section different depth, analyses through the resistivity to different depth, may look for the underground water-bearing stratum (low resistivity),can even is it wait for to survey the underground cavity (high resistivity)
Survey the depth from dozens of meters to several hectometers.
1.2 Transmitter
Turn battery or petrol electricity that generator send out into ultralow frequency square wave signal or two-way electric current long pulse supply power, set up underground electric fieldoffer the ground electric field signal for receiver .
The depth surveying is determined by The size of power of the transmitter.1200 Watt can survey 50 to 100 meters, 10 Kilowatt can survey 300 to 500 kilometers.
1.3 Main technological characteristic
(1) The depth layer surveying;
(2) Survey that can carry on the diversified, many position in surveying the area;
(3) Can use the network form of the computer; carry on long-range controllinglong-range data transmission in surveying the area;
(4) Disposable survey of much area, many position of completion in the twinkling of an eye.
2. Main application
2.1 Looking for the groundwater resources
(1) Survey 1 to 500 meters of layers of water of underground;
(2) It is arid to be used in the arealook for the underground source of water;
(3) Localization for the mountain area, plain drilling well.
2.2 Survey the underground cavity, cave with stalactitesstalagmites, etc.