In the depths of China’s Tianchi pumped-storage hydropower station, a revolutionary approach to tunnel engineering is unfolding, promising to reshape how we approach deep underground construction. Led by Junlin Lv, a team of researchers has delved into the complexities of controlled shaped-charge blasting, aiming to enhance the efficiency and safety of tunnel excavation in the energy sector.
The demand for mineral resources and energy is surging, driving the need for more efficient and controlled blasting methods in deep underground engineering. Traditional blasting techniques often fall short in managing the stability of surrounding rock and optimizing the use of explosives. This is where Lv’s research comes into play, focusing on the intricate dynamics of crack propagation and stress redistribution in the surrounding rock post-blasting.
The study, published in ‘Građevinar’ (Croatian for ‘Civil Engineer’), employed a combination of theoretical analyses, numerical simulations, and in situ tests to understand how different controlled blasting methods affect the surrounding rock. The findings are nothing short of groundbreaking. “The initial ground stress was conducive to the propagation of the blasting crack in the contour hole of smooth blasting towards the direction line of the blast hole,” Lv explains. This discovery highlights the potential for directional crack formation, a critical factor in achieving precise and controlled blasting outcomes.
One of the most compelling aspects of this research is its potential to revolutionize the energy sector. By improving the utilization rate of explosives and reducing blasting vibration, controlled shaped-charge blasting methods can significantly enhance the efficiency and safety of tunnel construction. This is particularly relevant for projects like the Tianchi pumped-storage hydropower station, where the stability of the surrounding rock is paramount.
The implications of this research extend far beyond the immediate project. As the energy sector continues to evolve, the demand for deep underground engineering will only increase. The ability to control the stability of surrounding rock and optimize blasting techniques will be crucial in meeting this demand. Lv’s work provides a roadmap for future developments in the field, offering a glimpse into a future where tunnel engineering is more precise, efficient, and safe.
The research not only advances the technical aspects of blasting but also underscores the importance of understanding the underlying mechanisms of rock behavior. By delving into the science of crack propagation and stress redistribution, Lv and his team have opened new avenues for innovation in the construction industry. As we look to the future, the potential for controlled shaped-charge blasting to transform deep underground engineering is immense, paving the way for more sustainable and efficient energy projects.
