From March 24th to 26th, 2025, the 14th Deep Foundation Engineering Development Forum was successfully held in Nanjing, Jiangsu Province. With the theme of "Innovation, Intelligence, Low-Carbon, Digitalization," the 14th forum focused on the application of intelligent technologies and innovations in deep foundation engineering, committed to promoting sustainable development within the industry. Over the years, the forum has become a highly influential platform for cooperation and exchange in the field of deep foundation engineering in China. Dr. Liu Jun, a young faculty member from the School of Construction Engineering, was invited to attend this forum and delivered a presentation in a parallel session titled: "Research on the Calculation Method for In-situ Rock Mass Deformation Modulus Based on Dynamic-to-Static Modulus Ratio and Damage Degree". The session was chaired by Professor Ding Jianwen from Southeast University and Associate Professor Li Xiaojuan from Jiangsu University of Science and Technology, attracting numerous experts, scholars, and graduate students to attend.

Dr. Liu Jun's presentation centered on the topic of rock mass deformation modulus within the field of rock mechanics and rock mass engineering. Through theoretical derivation of the dynamic-to-static modulus ratio and damage degree of jointed rock masses, combined with in-situ measured elastic longitudinal wave velocities of rock masses, he innovatively proposed a theoretical calculation method for in-situ rock mass deformation modulus. The accuracy of this theoretical method was demonstrated using extensive engineering field measurement data. This method significantly expands the application scope of test results obtained from elastic wave non-destructive testing techniques. Serving as an alternative method to in-situ rock mass modulus testing, it enables the rapid calculation of in-situ rock mass modulus values using sonic wave velocities obtained during the geological exploration phase. Furthermore, it provides a theoretical basis for determining the disturbance degree and disturbance range with depth in the bearing rock layer of rock-socketed piles.