高密度电阻率法异常旁侧效应的认识与探讨

Understanding and discussion of abnormal side effects of high density resistivity method

随着高密度电阻率法的广泛应用,当前以二维反演为主的资料解释方法中,经常会遇到旁侧效应解释问题.在三维高密度电法应用水平不高的当下,研究清楚二维高密度电法在勘探过程中旁侧效应的响应机制,会使二维高密度电法的测试结果更为准确,同时得到更广泛的应用.作者通过Res3dmod正演软件建模,利用Res3dinv反演软件获取反演数据结果,研究低阻地质体对测量结果的影响,抽取切片数据结果与二维反演软件Res2dinv处理得到的实例结果做对比,讨探旁侧效应的响应机制和一般规律,最后得出地质体旁侧效应的几点认识和相关应用体会.

With the extensive application of high-density resistivity method,the current two-dimensional inversion of data interpretation methods,often encounter side effects to explain the problem.In the current low level of application of three-dimensional high-density electric method,it is clear that the response mechanism of twodimensional high-density electric method in the exploration process side-by-side will make the test result of two-dimensional high-density electric method more accurate and more Wide range of applications.We used Res3dmod forward software to build the model,used Res3dinv inversion software to obtain the inversion data results,intuitively felt the influence of the low resistivity geologic body on the measurement results,and compare the result of the extracted slice data with the result obtained by the 2D inversion software Res2dinv.Then we discussed the response mechanism and general rule of the side effect,finally came to some understanding of the side effect of the geological body and the related application experience.