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首页> 外文会议>Deep Foundations Institute 28th Annual Conference on Deep Foundations: Deep Foundations in Compressible Soil and Soft Rock >USING SEISMIC TOMOGRAPHY TO EVALUATE FOUNDATION STRUCTURES
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USING SEISMIC TOMOGRAPHY TO EVALUATE FOUNDATION STRUCTURES

机译：使用地震层析成像来评估基础结构

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摘要

Cross-hole sonic logging (CSL) has become the universal standard, nondestructive testing (NDT) method used in evaluating the integrity of foundation structures to maintain quality assurance and quality contrcl (QA/QC) of transportation facilities and infrastructures. Tomography, based on three-dimensional cross-hole sonic logging data processing technology, offers an improvement over the techniques currently used to characterize the interior structure of drilled shafts. The underlying concept for seismic tomography is based on the principle that acoustic waves propagate at different velocities through different types of material or the same material with different physical properties. Three-dimensional velocity tomographic images provide greater detail of the interior structure, making defects easier to classify with respect to size and location within the foundation structure. By accurately classifying these defects, an engineer has the information necessary to accurately assess whether these structures meet the applicable design requirements, allowing them to repair or replace inadequate foundation structures. The end result is that the foundation structures will meet the safety and service life requirements for their project. This paper will present applications of seismic tomography, illustrating how seismic imaging can provide accurate information regarding the integrity of foundation structures.
机译：跨孔声波测井（CSL）已成为用于评估基础结构完整性以维持运输设施和基础设施的质量保证和质量控制（QA / QC）的通用标准，无损检测（NDT）方法。断层扫描技术基于三维交叉孔声波测井数据处理技术，相对于目前用于表征钻探井筒内部结构的技术进行了改进。地震层析成像的基本概念基于以下原理：声波以不同的速度传播通过不同类型的材料或具有不同物理特性的相同材料。三维速度断层图像可提供内部结构的更多细节，从而使缺陷在基础结构中的大小和位置方面更易于分类。通过对这些缺陷进行准确分类，工程师可以获得准确评估这些结构是否满足适用设计要求所必需的信息，从而使他们可以修理或更换不适当的基础结构。最终结果是基础结构将满足其项目的安全性和使用寿命要求。本文将介绍地震层析成像的应用，说明地震成像如何提供有关基础结构完整性的准确信息。

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