FCE Impact Case Studies 2023 - Sustainable approach revolutionizing land reclamation
【#理大科研—革新填海技術 】
香港地少人多， #填海 工程能為城市發展提供必須土地，但填海往往也用上大量物料，當中七成來自公眾填料，其餘則為海砂及機制砂，而本地對砂源的需求已遠超天然供應。因此，物色替代物料以取代傳統填海物料不但可以減低成本，亦有助促進填海工程的可持續發展。🌏
#理大 土木及環境工程學系土力學講座教授殷建華研發了一項創新的填海技術，利用疏浚香港海洋沉積物和廢料作為填海物料。殷教授的研究團隊針對海洋沉積物含水量高、低滲透率及承載力不夠的問題，利用綜合軟土改良技術，迅速固結海洋沉積物泥漿和現存海床沉積物，再進行測試如何透過混合兩類廢料，進一步強化其承載能力。研究團隊更在東涌新市鎮擴建項目進行實地測試🎛️，成功確立疏浚香港海洋沉積物作為填海物料的潛力，以及使用綜合軟土改良技術的可行性。 立即看片，了解殷教授的研究如何為香港以至大灣區的填海工程提供可持續的方案。
【#PolyUResearch: Revolutionizing land reclamation via sustainable approach】
Land reclamation has always been essential for the development of Hong Kong due to its limited land resources and growing population. However, the current practice of land reclamation requires a significant amount of fill materials, 70% of which are from public fill and the remaining are from sea sand and manufactured sand. The demand for sand resources far outpaces the natural supply. Therefore, the pursuit of alternative materials to replace traditional fill materials not only can reduce costs but also promote sustainable development in land reclamation. 🌏
Professor Jian-hua YIN, #PolyU Chair Professor of Soil Mechanics from the Department of Civil and Environmental Engineering, has developed an innovative technique for land reclamation using local dredged Hong Kong marine deposits (HKMD) and wastes as fill materials. His research team used a combined ground improvement method to solve the problems of high initial water content, low-permeability, and low-bearing capacity of HKMD slurry to speed up the consolidation of HKMD slurry with existing seabed sediments. They then tested how to further strengthen dredged HKMD with two types of waste materials. The research team has recently conducted an on-site trial in a testing pit at the Tung Chung New Town extension project🎛️, which successfully affirmed the potential of using dredged HKMD as a fill material for land reclamation, and demonstrated the viability of the combined ground improvement technique. Watch the video now and see how Prof. Yin’s research helps provide a sustainable solution for reclamation in Hong Kong and the Greater Bay Area.
#ResearchforImpact #PolyUFCE #Research #Innovation #LandReclamation #MarineDeposits #sustainability