Report title: physico-chemical effects of saturated and unsaturated soil seepage processes
Reporter: wei changfu researcher
Reporting time: wednesday, 23 november 2024, 9. 30 a. M
Reporting location: building engineering college room 206
Summary of the report: darcy's law gives a linear relationship between pore fluid flow speed and pressure gradients (or surface), which, in conjunction with pore fluid mass balance equations, form a flow model of fluids in pore mass media, which is widely used to describe single- or multiple-phase seepage processes in rock and earth bodies and is applied in areas such as rock and soil, water, oil and chemical. However, in practical applications, such models have at least the following problems: 1) chemical penetration and thermal penetration effects are not taken into account; 2) there is theoretical disharmony between the two streams; 3) there is no explanation for the initial water head phenomenon in natural sedimentary clay layers. The report begins with several examples of the deficiencies of these seepage models and discusses the root causes of their occurrence; then introduces a new seepage model and demonstrates theoretically and experimentally its compatibility and effectiveness; and finally presents the prospects for the application of the model being built through several margin issues。
Presenter's summary: dr. Wei changfu, ph. D., now second-level researcher at the wuhan institute of geotechnicals of the chinese academy of sciences, was elected to the 100-person programme of the chinese academy of sciences, and the national “billions of talents” project, with the designation of the state as a “specialist of outstanding contributions”. Graduated from the faculty of natural and environmental sciences of the uoci, the institute of mechanical sciences of the chinese academy of sciences received a master's degree, and the university of oklahoma, united states, a doctorate in civil engineering; is currently a member of the professional committee for non-saturated soil mechanics of the international institute of geotechnical and geotechnical engineering and a member of the professional committee for geotechnical sciences of the china society of mechanical sciences; and is a editor of the central geotechnical journal, acta geotechnica, geotechnica. Long-standing research on geotechnical and engineering safety, hydrate mining, and many important original research results have been obtained in the theory of the convergence of multi-phase geomechanical media, mechanics properties and test techniques. Presented more than 240 papers; received more than 30 licences from the state patent for inventions; trained 25 phds and more than 50 masters; received 1 provincial ministerial award for natural sciences and 1 provincial award for natural sciences。
