The selection of the most appropriate method(s) for a specific engineering geophysical site characterisation can be challenging due to the complexity and potential ambiguity of the factors influencing the utility and cost-effectiveness of the methods. This paper, using matter-element analysis techniques with analytic hierarchy process (AHP), proposes a demonstration matter-element model for selecting the most appropriate geophysical methods, and establishes the general flow and calculation process for geophysical method selection. On the basis of the analysis of the factors influencing the utility and cost-effectiveness of geophysical methods, an evaluation criteria system is constructed. To demonstrate the application of this process, the proposed matter-element geophysical methods selection mode is applied to the selection of geophysical methods for an engineering geophysical site characterisation project that ultimately involved the acquisition of electrical resistivity tomography (ERT), multichannel analysis of surface wave data (MASW) and ground penetrating radar (GPR). The optimal results, based on the matter-element model, indicate the recommended geophysical methods are consistent with the field methods ultimately employed. The research proposes a new quantitative and objective computing approach to the selection of geophysical methods. The matter-element model can minimise subjective influences to a certain extent, and is conducive to enhancing the utility and cost-effectiveness of a geophysical survey.

由于影响方法效用和成本效益的因素的复杂性和潜在的模糊性，为特定的工程地球物理场地特征选择最合适的方法可能具有挑战性。本文利用物元分析技术和层次分析法(AHP)，提出了一个用于选择最合适地球物理方法的示范物元模型，并建立了地球物理方法选择的一般流程和计算过程。在分析影响地球物理方法实用性和成本效益的因素的基础上，构建了评价标准体系。为了演示这个过程的应用，提出的物元地球物理方法选择模式应用于工程地球物理场地表征项目的地球物理方法选择，最终涉及电阻率层析成像（ERT）、表面波数据多通道分析（MASW）和探地雷达(探地雷达)。基于物元模型的优化结果表明推荐的地球物理方法与最终采用的现场方法一致。该研究提出了一种新的定量和客观计算方法来选择地球物理方法。物元模型可以在一定程度上减少主观影响，有利于提高物探的实用性和成本效益。