地震散射技术在桥桩基场地检测工作中的应用

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Application of Seismic Scattering Technique in the Detection of Bridge PileFoundation Sites

REN Yutao SONG Lijun （Shanxi Province Coal Geology 114 Prospecting Institute Co.， Ltd.， Changzhi O46011， China）

Abstract： [Purposes] This study aims to identify the presence of unfavorable geological bodies such as goafs，fractures，and karst caves near pile foundations 0# to 8# of Bridge S in a project in Shanxi Province，and to evaluate their impact on the safety of the pile foundation engineering.[Methods] The seismic scattering technique （SSP） was employed to conduct engineering geophysical exploration in the study area.The methodology and its application were introduced，and the fault zones and karst development areasbeneath the bridge pile foundation site were delineatedand interpreted.[Findings]The findings indicate that the seismic scattering technique efectively identified major unfavorable engineering geological issues within the bridge site，including the distribution and genesis of low-velocity loose rock and soil， the extentoffault zones，the development ofkarst，and their implications for the stabilityof the engineering site.[Conclusions] The research results provide a technical basis for subsequent exploration work. Keywords： seismic scattering technique （SSP）; bridge pile foundation; geological hazard investigation; fault; engineering geophysical prospecting

0 引言

为确保交通建设的工程质量与安全，需查明地下空间的岩性分层、基岩面埋深及起伏、活动断裂、地裂缝、孤石、空洞、富水性等重要信息，开展工程场地条件勘察与采空区探测工作，其已形成了较为成熟的技术方案。（剩余6186字）