高密度电法在穿越工程中的应用研究

Study on Application of High Density Resistivity Method on Crossing Project

该文介绍了高密度电法原理及常用装置,从正演模拟出发,对高密度电法在油气管道穿越工程中的可行性进行了研究,并给出了应用实例。对同一测线的两种高密度电法装置勘探结果进行了比较,结果表明高密度电法在勘察基岩面深度及裂隙发育方面效果较好;在相同地电条件及相同的剖面长度下,温纳装置对水平方向的电阻率变化较敏感;而偶极装置对垂向电阻率变化较敏感。

This article describes the principles and conventional devices of high density resistivity method. Starting from the forward simulation,a feasibility study of high density resistivity method on oil and gas pipeline crossing project is made,an example of application is given,and the investigation results between two high density resistivity methods equipment on the same survey lines are made compared.The results show that high density resistivity method has better effects in the investigation of the depth of bedrock surface and fissure development;and Wenner device is sensitive to resistivity change on the horizontal direction while dipole device sensitive on the vertical direction under the same geoelectric conditions and the same section length.