| 霍泽辉,陈丰,张松,孙川川.天津地区深部土层的静力触探指标与物理力学指标相关性研究[J].矿产勘查,2025,16(3):641-650 |
| 天津地区深部土层的静力触探指标与物理力学指标相关性研究 |
| Research on the correlation between static cone penetration test indices and physical-mechanical indices of deep soil layers in Tianjin |
| 投稿时间：2024-06-12 |
| DOI：10.20008/j.kckc.202503022 |
| 中文关键词: 天津地区 深部 静力触探指标 物理力学指标 经验公式 |
| 英文关键词: Tianjin area deep layers static cone penetration test indices physical-mechanical indices em-pirical formula |
| 基金项目:本文受天津市第二地质勘探大队课题“超深静探装备引入及在天津地区应用研究”(地质二队任[2021]01号)资助。 |
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| 中文摘要: |
| 由于普通静力触探设备贯入地基土深度有限，天津地区深部土层的静力触探指标与物理力学指标的相关性的研究较少，本文通过引进的超深静力触探设备收集深部土层的静力触探指标，研究深部土的静力触探指标与土的物理力学性质指标的相关性，总结了天津地区深部土层的静力触探指标与土的物理力学性质指标的经验公式。主要研究内容包括:(1)静力触探指标与土的物理力学指标相关关系，如天然重度(γ)、天然孔隙比(e)、压缩模量(Es)、剪切指标(固结快剪 .c)等；(2)静力触探指标与标准贯入锤击数 N的相关分析，得出区域性经验公式，并对经验公式进行验证，验证表明利用静力触探指标估算深部土层的物理力学性质指标有较高的可靠性。文中深部土层指 30～80 m土层。 |
| 英文摘要: |
| Due to the limited penetration depth of conventional static cone penetration equipment in founda-tion soils, there has been insufficient research on the correlation between static cone penetration test (CPT) param-eters and physico-mechanical properties of deep soil layers in Tianjin. This study employs advanced ultra-deepcone penetration equipment to collect CPT parameters from deep soil layers, investigating their correlations with soil physico-mechanical properties and establishing region-specific empirical formulas. The main research aspects in-clude: (1)Correlation analysis between CPT parameters and soil properties such as natural density (γ), natural void ratio (e), compression modulus (Es), and shear parameters (consolidated quick shear .c); (2)Correlation study be-tween CPT parameters and standard penetration test (SPT) blow count N, culminating in regional empirical formu-las. Validation demonstrates that estimating deep soil layer properties using CPT parameters achieves high reliabil-ity. In this study, "deep soil layers" refer to the 30-80 m depth range. |
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