报告时间：7月4日（星期四）下午 16:00-17:30
报告地点：天津大学地科院（第16教学楼）221报告厅
报告题目：How to Overcome the Limitations of Conventional Laboratory Permeability Tests
主讲嘉宾：张铭 教授（日本产业技术综合研究所）
报告简介：Conventional laboratory permeability tests, specifically, the constant-head and falling-head permeability tests, have been widely used in engineering and environmental laboratories. However, these tests are based on Darcy’s law, and can only obtain the value of hydraulic conductivity of test specimen under steady or quasi-steady state. In addition, these techniques cannot be effectively used to test specimens having low permeability, and cannot be effectively used to evaluate the effects of confining pressure (equivalent to earth pressure) and pore pressure (equivalent to groundwater pressure). This presentation introduces some strategies for overcoming the limitations of conventional laboratory permeability tests. A set of rigorous theoretical solutions to different kinds of laboratory permeability tests under different boundary conditions together with a versatile laboratory permeability test system have been developed. By using the rigorous solutions together with early unsteady state records of a permeability test, both the hydraulic conductivity and specific storage, another important parameter related to transient flow in porous media can be obtained through numerical inversion. In addition, errors that may be induced due to compliance of tubing system can also be eliminated. With the improved technologies, the time required for testing low permeability can be greatly reduced while the accuracy of hydraulic parameters being characterized can be increased.
嘉宾简介：张铭教授是日本产业技术综合研究所研究组组长，兼日本东北大学客座教授，国际知名岩土水文学和岩土环境工程专家，1996年于日本九州大学获博士学位。曾历任日本九州大学访问研究员，元日本科学技術振興事业团 (现JST的前身)博士后研究员，元日本地质地质调查所首位终身聘用外国人主任研究官，2001年改组成立的日本最大规模国立产业技术综合研究所主任研究员，组织机构评估和设计主干，主任研究员，现为该所地球科学领域土壤污染与整治技术开发重点战略研究方向的领头人。
张铭教授长期从事岩土工程与环境有关的前沿科技开发和管理工作，研究领域涉及岩土力学、水理学、核废料管理、土壤污染评价及整治、环境微生物学、环境风险评价和管理等领域和相关交叉领域。他身兼多职，是国际标准化组织(ISO) TC190土质技术委员会专家，美国试验和材料学会(ASTM International)D18岩石和土壤委员会委员，ASTM E50环境评价风险管理和对策委员会委员，美国土木工程师学会(ASCE)会员，ASCE Journal of Hazardous, Toxic, and Radioactive Waste杂志副主编，美国地球物理学会(AGU)终身会员，日本经济产业省(METI)，石油天然气金属矿物资源机构(JOGMEC) 及东京都土壤污染整治项目等国家和地方政府机构项目评委，东京农工大学非常勤讲师，日本持续发展与污染整治研究协会(SuRF-Japan)副会长，中国地球科学促进会(IPACES)成员，拥有近30年的研究、教育和项目管理等丰富经历。
