国家自然科学基金重大科研仪器设备研制专项

发布者:mege发布时间:2017-11-17浏览次数:955


国家自然科学基金重大科研仪器设备研制专项


项目名称: 复杂深海工程地质原位长期观测设备研制

负责人:   贾永刚

研究期限: 201501 -- 201912

关键词:   深海;工程地质;原位长期观测;设备研制;南海北部陆坡

                               deep sea engineering geology in-situ long-term observationequipment development the northern slope of the South China Sea

摘要:    本项目研制一套复杂深海工程地质原位观测设备,建立自动长期连续的现场观测技术与数据分析方法,实现对深海底工程地质条件的定量描述,获悉工程地质环境动态变化过程与影响因素,为深海工程地质研究提供技术手段支撑。研制的观测设备实际应用于南海北部陆坡深水区复杂工程地质条件研究,进行为期12个月原位连续观测,获得深海底沉积物工程性质指标及其动态变化、沉积物孔隙水压力累积与液化过程、海底面地形侵蚀与堆积动态变化、底层海水动力条件。本项目核心技术是:深海底沉积物电阻率三维量测及数据反演技术,海底沉积物声波量测及数据反演技术,海底边界层动态变化的电阻率-孔隙水压力探杆同步量测技术,海底长期观测设备的可再生能源海水溶解氧电池供电技术,海底长期观测仪器及其配套设施的搭载平台设计技术。本项目的研究成果,将揭示南海北部陆坡工程地质条件与动力变化过程,推进深海工程地质原位观测技术发展与实际应用,促进深海工程地质的发展。

                            The project aims to develop a set of in-situ surveying equipment of engineering geology in complex deep sea, establish automatic long-term continuous field observation technology and data analysis method, achieve quantitative depict of engineering geological conditions of deep seabed, learn the dynamic variation process of engineering geological environment and influencing factors, in order to provide technology support for the research of engineering geology in deep sea. The observation equipment will be deployed in the deep water in the northern slope of the South China Sea, a location known for its complex engineering geological conditions, and the deployment will last for 12 months to record the engineering property index of deep sea sediment and its dynamic changes, the pore pressure accumulation and liquefaction process in sediment, the seabed topographychanging the South China Sea through the data collection from the measurement system.