| 海洋地勘黏土数据一致性原则及应用研究 |
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| 引用本文： | 牛海峰, 李向辉, 梁峰, 李亚, 张子健. 海洋地勘黏土数据一致性原则及应用研究[J]. 南方能源建设, 2023, 10(1): 124-132. doi: 10.16516/j.gedi.issn2095-8676.2023.01.016 |
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| 作者姓名： | 牛海峰 李向辉 梁峰 李亚 张子健 |
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| 作者单位： | 1.中国广核新能源控股有限公司, 北京 100070;;2.深圳市普罗海洋科技有限责任公司, 广东 深圳 518000;;3.深圳清华大学研究院, 广东 深圳 518057 |
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| 基金项目： | 深圳海外高层次人才创新创业专项资金孔雀团队“基于精准地勘的海洋负压基础一体化技术研发与应用”（KQTD20200820113011026）部分资助 |
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| 摘 要： | 目的 当前地勘工作特别是岩土勘察存在较大的经验性和盲目性，缺乏对土样扰动和测试结果的评估。为此，需对海洋岩土勘察技术进行深入研究。 方法 通过研究国内外海洋地勘技术结合多年不同海域工作经验，提出一种基于一致性原则的海洋精准地勘新方法。新方法在岩土勘察部分主要包括两个基本环节：（1）土样扰动综合评估；（2）土体强度测试结果的一致性综合评估。 结果 土工、物探和地质模型立体交叉一致性分析构建了精准地勘体系。多个海工项目实例证明，新技术能通过黏土土样扰动综合评价对各种获取方法和数据去芜存菁，采用室内土工试验和原位测试相结合，常规和高级土工试验相结合的方式对各种数据进行一致性分析、获得钻孔处更丰富更连续的数据。与传统的单一土工测试相比，数据的可靠性和精准性得到了提高，并弥补了样品取样点间的数据缺失。 结论 所提新方法正确且有效，可以提高地勘数据应用，降低勘察成本，并为包括海上风电在内的海工项目提供更多更可靠的岩土参数。
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| 关 键 词： | 海洋精准地勘 海上风电 实验和原位测试 岩土勘察参数 一致性技术 |
| 收稿时间： | 2022-05-30 |
| 修稿时间： | 2022-07-23 |
Research and Application of Geotechnical Data Consistency in Marine Site Exploration |
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| NIU Haifeng, LI Xianghui, LIANG Feng, LI Ya, ZHANG Zijian. Research and Application of Geotechnical Data Consistency in Marine Site Exploration[J]. SOUTHERN ENERGY CONSTRUCTION, 2023, 10(1): 124-132. doi: 10.16516/j.gedi.issn2095-8676.2023.01.016 |
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| Authors: | NIU Haifeng LI Xianghui LIANG Feng LI Ya ZHANG Zijian |
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| Affiliation: | 1. CGN New Energy Holdings Co., Ltd., Beijing 100070, China;;2. Prime Ocean Technology (Shenzhen) Co., Ltd., Shenzhen 518000, Guangdong, China;;3. Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, Guangdong, China |
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| Abstract: | Introduction The current marine geological exploration, particularly the geotechnical investigation, often follows traditional experiences without a clear objective, and lacks the evaluations of soil sample disturbance and test results. Therefore, it is necessary to conduct in-depth research on marine geotechnical investigation technology. Method Based on the domestic and international research on marine geological exploration technology and multi-year working experience in different sea areas, we developed a new accurate marine geological exploration technology with emphasis on the principle of consistency. The geotechnical investigation part of the new method included two basic aspects: (1) comprehensive evaluation of soil sample disturbance; (2) comprehensive evaluation of consistency of soil strength test results. Result The three-dimensional cross-consistency analysis of geotechnical, geophysical, and geological models has established an accurate geological exploration system. Several examples of marine engineering projects showed that the new technology can screen good acquisition methods and data through comprehensive evaluation of clay soil sample disturbance, and conduct consistency analysis of various data by combining the laboratory geotechnical tests with in-situ tests and the routine geotechnical tests with advanced geotechnical tests to obtain richer and more continuous data at the borehole. Compared with the traditional single geotechnical test, our new technology demonstrated the improved reliability and accuracy of the data, and the missing data between the sampling points are compensated. Conclusion The proposed new method can reinforce the application of geological exploration data, reduce investigation costs, and provide more geotechnical parameters that are more reliable for marine engineering projects including offshore wind power. |
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| Keywords: | accurate marine geological exploration offshore wind farm lab and in-situ tests geotechnical investigation parameters consistency analysis |
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