Application of CO₂ fracturing blasting in mountain tunnel construction adjacent to existing structures.

ABSTRACT: As a novel rock-breaking technique, CO₂ fracturing blasting demonstrates distinct advantages in mountain tunnel construction adjacent to existing structures, characterized by minimal environmental disturbance and enhanced operational safety. However, under the premise of predefined safety protection objectives, research on the control of CO₂ fracturing energy release remains notably limited. This study investigates the phase-transition pressurization mechanism and process characteristics of CO₂ fracturing blasting. The energy released by a CO₂ fracturing device generating a peak pressure of 280 MPa was calculated quantitatively. Subsequently, a comprehensive safety verification methodology for CO₂ fracturing energyis proposed. Furthermore, an integrated quality control system encompassing

SUBMITTER: Li Z 

PROVIDER: S-EPMC12808313 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature