Under the Federal Highway Administration’s innovation development program “Every Day Counts” (EDC-5), the initiative on Advanced Geotechnical Methods in Exploration (A-GaME) aims to improve the knowledge in U.S. practice on existing but underutilized subsurface exploration methods. The A-GaME suite of technologies is a group of proven and effective exploration technologies and practices that, in conjunction with limited conventional exploration methods, mitigate the risks of geotechnical uncertainties and optimize subsurface exploration programs for improved site characterization and reliability over a wider coverage area and maximum return-on-investment. Transportation agencies are becoming more eager to employ alternative exploration methods to supplement their investigations and limit uncertainty emanating from geotechnical subsurface conditions. In this context, Arkansas Department of Transportation, in collaboration with the University of Arkansas, has implemented geophysical methods in subsurface investigation to acquire adequate information in relation to bedrock depth and rippability for new construction and to address slope stability issues along roadways. Different geophysical methods have been employed, including multichannel analysis of surface waves (MASW), electrical resistivity tomography (ERT), and microtremor horizontal to vertical spectral ratio (MHVSR). Two case studies are presented here, one for a proposed and one for an existing transportation project. According to the results of these case histories, the joint application of MASW and MHVSR was determined to be valuable for rock rippability estimates for roadway projects, whereas the combined use of MASW, MHVSR, and ERT produced significant additional subsurface information for landslide assessments and remediation efforts.

在联邦公路管理局的创新发展计划“每天计数”（EDC-5）下，先进的勘探中岩土方法（A-GaME）计划旨在提高美国实践中对现有但未充分利用的地下勘探方法的知识。A-GaME技术套件是一组经过验证的有效勘探技术和实践，结合有限的常规勘探方法，可减轻岩土工程不确定性的风险，并优化地下勘探计划，以在更大的覆盖范围内改善现场特征和可靠性和最大的投资回报率。运输机构越来越渴望采用替代的勘探方法来补充其研究成果，并限制岩土地下条件带来的不确定性。在这种情况下，阿肯色州交通运输部与阿肯色州大学合作，在地下调查中实施了地球物理方法，以获取有关新建筑基岩深度和可剥性的足够信息，并解决公路沿线的边坡稳定性问题。已经采用了不同的地球物理方法，包括表面波的多通道分析（MASW），电阻率层析成像（ERT）和微震水平与垂直光谱之比（MHVSR）。这里介绍了两个案例研究，一个案例用于一个提议的案例，一个案例用于一个现有的交通项目。