To explore the feasibility of nano aluminum thermite as a detonator substitute for achieving stable detonation in mixed biomass blasting agent systems, and to clarify the differences in detonation effects relative to detonators, digital electronic detonators (S0), Al/CuO thermite (S1), and Al/Bi₂O₃ thermite (S2) were selected to detonate a mixed biomass blasting agent composed of wood powder and peanut shell powder (mass ratio 1∶1). Based on theoretical analysis, qualitative analysis and quantitative calculation were conducted for the total energy release and energy release power of different detonation methods to estimate detonation performance. Industrial explosive performance testing methods-including aluminum thermite detonation test, orthogonal tests of detonation velocity and intensity, underwater explosion tests, and blasting funnel tests-were used to systematically test and compare the detonation response characteristics of the mixed biomass blasting agent under different detonation conditions. The evolutionary laws of the explosive performance were explored from perspectives of impact effect, energy release intensity, and spatial damage effect. Results indicate that detonators and thermites belong to two distinct energy release power level systems: detonators enable instantaneous power output in the MW range, while thermites only reach the kW range. Aluminum thermite detonation is a typical high-temperature explosive energy release process with high energy density, which can achieve effective energy coupling under limited constraints and possesses reliable detonation capability. Oxygen pressure is the dominant factor affecting detonation velocity and intensity, followed by steel pipe wall thickness. The impact of detonation methods is relatively weak, and detonation methods are substitutable. Synergistic enhancement of detonation velocity and intensity can be achieved by increasing oxygen pressure and optimizing constraint conditions. The excitation efficiency of the three detonation methods follows a consistent ranking: S0 is the strongest, S2 ranks second, and S1 is slightly weaker. This ranking has been verified by shock wave parameters and crater volumes (0.33, 0.24, 0.21 m³). This research provides experimental support for the optimization and application of biomass blasting technology.

Blasting Engineering is an essential core course for civil engineering and mining majors. To improve the students' understanding on dynamic mechanical response and damage mechanism of rock materials, the experimental teaching contents of explosion and impact dynamics of rock materials were set up in a training plan to achieve the teaching goal of the course of Blasting Engineering. In view of students' lack of theoretical knowledge and experimental basis of impact dynamics in blasting engineering, the split Hopkinson pressure bar(SHPB) experiment technology and two-dimensional plate blasting(TDPB) experiment technology were applied to the practical teaching of Blasting Engineering. Firstly, the experimental system compositions and calculation principles of SHPB and TDPB were introduced. Secondly, the course contents of SHPB impact compression experiment and TDPB central blasting experiment of rock materials were designed. Thirdly, the dynamic mechanical behavior and energy evolution characteristics of sandstone material under the SHPB experiment and the strain wave evolution and dynamic damage and fracture behavior mechanism of sandstone-like material under the TDPB experiment were analyzed. Finally, the students' in-depth discussion on the critical problems of rock impact dynamics was guided. The innovative combination of SEM testing technology and impact dynamics experimental technology revealed the damage mechanism of rock materials under SHPB and TDPB experiments to students from the micro-level, which gave the students a clear understanding of meso-damage and macro-failure. The effect of teaching practice shows that the student's theoretical and practical ability is exercised by combining the experimental course of SHPB and TDPB with the theoretical course of Blasting Engineering, which leads to the improvement of students' scientific research ability and the sense of teamwork, and the fulfillment of the teaching goals.