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电法勘探中的联合剖面法,是利用两个三极装置,由点电源电场供电。由于供电电极(场源)随同测量电极一起沿测线移动,从不同方向对地质体进行极化,因而产生不同方向的偶极场。对测线上某一观测点,所测得的ρ_s,不但与ρ_(MN)有关,还与移动的点源 A 极、B 极所处位置有关。联合剖面法较其它电法装置,往往具有较高的灵敏度和分辨能力,可以提供较为丰富的地质信息,从两条曲线的分布特征来研究,分析确定地下地质体的性质和产状,有时可取得较好的地质效果。联合剖面法装置本身虽有独到之处,但在野外条件下因受地形、电性不均匀等多方面较复杂的综合因素影响,使联合剖面法曲线往往产生不同程度的畸变。正因为存在着这种不足,
The combined cross-section method in electrical prospecting uses two three-pole devices powered by the point source electric field. Since the power supply electrode (field source) moves along the survey line together with the measuring electrode, the geologic body is polarized from different directions, thereby generating dipole fields in different directions. For a certain observation point on the survey line, the measured ρ_s is not only related to ρ_ (MN), but also relates to the location of the A pole and the B pole of the moving point source. Compared with other electrical devices, the joint section method often has higher sensitivity and resolving power, can provide more abundant geological information, and can be studied and analyzed according to the distribution characteristics of the two curves, and the properties and occurrences of the underground geological body can be analyzed and analyzed. Sometimes Achieve better geological results. Although the cross-section device itself has some unique features, under the field conditions, due to the complicated factors such as terrain and electrical unevenness, the curve of the joint cross-section tends to have different degrees of distortion. Because of this deficiency,