哈萨克斯坦共和国地质雷达研究实践

Yu. V. Burtyl, D. Kapski, A. Czerepicki
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引用次数: 0

摘要

本文讨论了在地下研究工程中应用探地雷达(GPR)技术的问题。介绍了探地雷达研究在道路建设和运营中的应用领域,以及这种工程测量方法的优缺点。它提供了用于确定欧洲、独联体和美国单片路面层厚度的现有GPR控制方法的准确性(不准确性)的比较数据。介绍了探地雷达测量程序的主要规定,包括四个主要阶段:测量断面初始材料分析和设备准备;地质雷达调查;地质验证;雷达图的处理与解释;准备一份报告。使用OKO系列的地球物理雷达进行了地球物理工作,作为道路测量综合体DVK-05的一部分,在阿斯塔纳-彼得罗巴甫洛夫斯克A-1高速公路的水泥混凝土路面和R-12“Kokshetau - Atbasar”的沥青路面上进行了测量。介绍了在单片层厚度地质验证过程中所拍摄的雷达图和水泥混凝土路面的岩心样本。在假定所得值的非均质性的前提下,通过指示路段的纵向通道雷达图给出了路面层厚度的变化图。所得的单片层(水泥混凝土和沥青混凝土)厚度结果以定量偏离要求标准值的标准进行评估。提出了建议,以解决在道路调查的各个阶段的整体路面层厚度的积极偏差。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Practice of geo-radar research in the Republic of Kazakhstan
The article considers the issues of applying ground penetrating radar (GPR) technologies for engineering purposes concerning subsurface research. It describes the field of application of GPR research during road construction and operation and the advantages and disadvantages of this type of engineering survey. It presents comparative data on the accuracy (inaccuracy) of existing GPR control methods applied to determine the thickness of the monolithic pavement layers in Europe, CIS, and the USA. The main provisions of the GPR survey procedure are described, including four main stages: the analysis of initial materials of surveyed section and equipment preparation; GPR survey; geological verification; processing and interpreting of radargrams; and the preparation of a report. Geophysical works were performed using the geo-radar of the OKO series as part of the road measuring complex DVK-05 on the section of the Astana-Petropavlovsk A-1 highway with cement concrete pavement and on the section of the R-12 "Kokshetau - Atbasar" with asphalt pavement. The example of a radargram and the core sample of a cement concrete pavement taken during geological verification of the thickness of a monolithic layer is presented. Graphs of variation in the thickness of pavement layers by radargrams of longitudinal passages in the indicated road sections with the assumptions about the nature of the heterogeneity of the obtained values are given. The obtained results on the thickness of monolithic layers (cement concrete and asphalt concrete) were assessed on the criteria of quantitative deviation from the required standard value. Recommendations were provided to address positive deviations in the thickness of monolithic pavement layers at various stages of the road survey.
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