CT理论与应用研究2025，Vol.34Issue(6)：1046-1056,11.DOI:10.15953/j.ctta.2024.192
微动台阵探测技术在抽水蓄能工程场地勘查中的应用
Application of Micro-tremor Array Detection in Site Investigation for Pumped Storage Project
王河 1陈宗刚 1张明财 1王彦琪 1车子强1
作者信息
- 1. 中国电建集团西北勘测设计研究院有限公司,西安 710065
- 折叠
摘要
Abstract
In recent years,advancements in geophysical instruments,equipment,and sensitivity have enabled the widespread application of micro-tremor array detection,a natural source geophysical method,in engineering exploration and shallow geological surveys.In this study,we aimed to classify the bedrock relief interface of a pumped storage project site,determine the thickness of its overlying layer,and identify hidden fault structures in the working area.According to the real working conditions at the site,micro-tremor array detection technology featuring strong anti-interference ability and high efficiency and speed was selected.The theoretical simulation results showed that the dispersion curves obtained using a linear array and triangular nested array were consistent with the theoretically calculated values.Therefore,a linear array method was adopted to detect two survey lines arranged in the working area.A data collection method was adopted to obtain abundant geological information in the shallow layer to accomplish high-precision detection of the shallow surface.Based on the SPAC method,the phase-velocity dispersion curves of the fundamental Rayleigh waves were extracted from each measurement point of the two survey lines.The S-wave velocity structural profiles of the two survey lines were obtained via inversion interpolation.The detection results indicated that the thickness of the covering layer in the working area was basically consistent with the verification results of the drilling data,and no shallow geological bodies were found.This provides reliable shallow geological information for the construction of pumped storage projects.关键词
微动台阵探测/直线阵列/SPAC/覆盖层厚度Key words
microtremor array detection/linear arrays/SPAC/cover thickness分类
天文与地球科学引用本文复制引用
王河,陈宗刚,张明财,王彦琪,车子强..微动台阵探测技术在抽水蓄能工程场地勘查中的应用[J].CT理论与应用研究,2025,34(6):1046-1056,11.
