In the heart of China’s construction and energy sectors, a groundbreaking study is reshaping how professionals approach deep-hole blasting in open slopes. Bo Tan, a leading expert from China Construction Communications Engineering Group Corporation Limited, has published a compelling investigation into the effects of geological structures on blasting performance, offering insights that could revolutionize safety, efficiency, and environmental impact in large-scale construction and energy projects.
The study, published in the esteemed journal *Advances in Civil Engineering* (translated from its original Chinese title), delves into the intricate dance between geological formations and blasting outcomes. Tan and his team conducted meticulous field experiments on limestone slopes, each boasting distinct geological features: stiff structural planes, fracture zones, and karst zones. By employing cutting-edge technologies like borehole cameras, unmanned aerial vehicle (UAV) photogrammetry, and blast vibration monitoring, they uncovered a treasure trove of data that could significantly impact the energy sector.
One of the most striking findings was the stark contrast in blasting fragmentation across different geological structures. “The proportion of large blocks varied dramatically,” Tan explains, “with fracture zones producing 21% large blocks, stiff structural planes yielding 15%, and karst zones a mere 2%.” This variability underscores the critical need for tailored blasting approaches, particularly in energy projects where precise fragmentation can enhance efficiency and reduce costs.
The study also shed light on the relationship between geological structures and blast-induced vibrations. Peak particle velocity (PPV) was highest in stiff structural planes, while its attenuation rate was lowest, posing potential risks to nearby structures and personnel. “Understanding these dynamics is crucial for ensuring safety and minimizing environmental impacts,” Tan emphasizes.
Moreover, the research revealed distinct patterns in blasting heap formation and fume dispersion. Stiff structural planes exhibited overall heaving, fracture zones accumulated horizontally, and karst zones displayed flatter heaps with localized collapse. Fume dispersion varied from column-shaped in stiff structural planes to layered in fracture zones and sparse in karst zones. These findings highlight the importance of considering geological structures in blast design to optimize outcomes and mitigate risks.
The implications for the energy sector are profound. By identifying geological structures through advanced technologies and analyzing their influence on blasting characteristics, energy companies can evaluate deep-hole blasting effectiveness more comprehensively. This knowledge enables the rational optimization of blasting parameters, reducing environmental impacts and enhancing the long-term stability of slopes. “This research provides a robust framework for improving blasting practices in the energy sector,” Tan concludes.
As the energy industry continues to expand into complex geological terrains, the insights from Tan’s study offer a beacon of guidance. By embracing these findings, professionals can navigate the challenges of deep-hole blasting with greater precision, safety, and environmental stewardship, ultimately shaping a more sustainable and efficient future for the sector.