Data-driven and Resilience-based Geotechnical System in Hong Kong

数据与韧性驱动的香港岩土工程系统

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The Geotechnical Engineering Office (GEO) of the Civil Engineering and Development Department has leveraged the rapid advancement in innovation and technology to establish a data-driven and resilience-based geotechnical system with a view to withstanding the evident adverse impacts of climate change on slope safety and facilitating future development in Hong Kong. This lecture illustrates the advancement of the geotechnical system through mastering the cutting-edge innovation and technology in four projects, highlighting the opportunities and challenges in attempting to strengthen city’s resilience against extreme weather and facilitate infrastructure development. These include early landslip warning, construction material testing, ground modelling and digital knowledge services. The GEO’s fifth-generation AI-empowered landslip warning system applies multivariate machine-learning models on big data of rainfall, landslide and slope records to achieve significant improvement in forward landslide prediction and support timely issuance of landslip warnings. To facilitate city development, an automated system for concrete cube testing integrating robotics, AI-based image recognition and fracture-pattern classification is developed, which improves the reliability, efficiency and occupational safety of the work process. At a city level, an AI-assisted three-dimensional geological modelling (3DGM), utilizing cutting-edge generative models to infer stratigraphy in areas with limited ground investigation data, has been established. It provides uncertainty-aware ground models for early-stage project planning. Lastly, a pilot large-language-model (LLM) based chatbot using retrieval-augmented generation on geotechnical publications and guidance offers multilingual, citation-backed responses to complex technical enquiries, providing a foundation for long-term AI knowledge services.

      张伟文博士系香港特区政府土木工程拓展署土力工程处处长，太平绅士。张博士在香港拥有超过三十年的土木及岩土工程经验，曾参与香港国际机场多个大型基建项目，包括机场填海工程、机场铁路、西区海底隧道等。现任土力工程处处长，负责岩土工程管控、标准制定、建筑材料测试与研发、地下空间开发、防止山泥倾泻计划、山泥倾泻预警系统、滑坡应急服务等，同时统筹土力工程处的整体创新与科技发展。张博士担任多个国际技术委员会委员，如欧洲滑坡风险评估与减灾学院科学委员会、国际土力学与岩土工程学会TC205技术委员会、国际滑坡预警系统协会，以及《Georisk》、《岩土工程学报》等期刊编委。