Before the exchange of the report, President Yue introduced Professor Mei's academic profile to the participants. Professor Mei Guoxiong first introduced some interesting experiences in his student days, that is, he found some "problems" in some basic concepts and principles in the course of self-study soil mechanics, and shared his long-term continuous thinking and research since he found these "problems" for more than 20 years, so as to encourage students to be good at finding problems during their study, Develop the habit of thinking independently. After that, Professor Mei analyzed the contradictions of Terzaghi's formula, which is the most basic one in soil mechanics, and explained why he started today's report; And the main content of this report is introduced. Aiming at the problem of space-time effect consolidation of drainage boundary, the theoretical formula is given through a series of theoretical derivation from the assumption, and the correctness of the formula is verified by the actual test.

After Professor Mei's report, the students enthusiastically asked questions about rock and soil, history, feelings, knowledge and other aspects. Professor Mei answered them one by one, which was highly praised by the teachers and students.

Mei Guoxiong was born in Huangmei, Hubei Province in August 1975. In April 2002, he graduated from the national key discipline of geotechnical engineering of Hehai University and won the young teacher fund of Huo Yingdong in December 2003; He was appointed professor in December 2004; In July 2008, he won the youth science and technology award of Chinese society of rock mechanics and engineering; In August 2013, he won the National Excellent Youth Fund; In December 2014, he was selected as the distinguished professor of Changjiang Scholars; In November 2018, he was selected as the teaching director of civil engineering major of the Ministry of education; In March 2019, he won Mao Yisheng Youth Award for soil mechanics and geotechnical engineering; In May 2020, as a main member, he won the medal of the second national top ten teams in innovation (the only geotechnical engineering representative in the team); In 2021, it will be listed in the top 2% scientists in the world. 4 first prize and 3 second prize of provincial science and technology progress award; He won two first prizes of provincial teaching achievements and one new engineering research and practice project approved by the Ministry of education. Science Press published 4 monographs, 93 SCI papers, 62 first-class works and corresponding authors, including 7 highly cited papers and 3 hot papers; The company has obtained one patent from the United States and one from Australia, 26 from China, and 14 achievements have been transferred; Three national construction methods and nine provincial construction methods were obtained.