Theory and key technologies for targeted precision-induced modification in non-explosive mechanized continuous mining of deep hard rock

This study focuses on the three major challenges faced in the mining of deep hard rock ore bodies: the difficulty in in-situ perception of ore-rock characteristics, the unclear mechanism of precision-induced modification of deep hard rock ore bodies, and the lack of non-explosive mechanized continuous rock-breaking technologies. It carries out theoretical and technical research on targeted precision-induced modification for non-explosive mechanized continuous mining in deep hard rock, proposes the theoretical concept of targeted precision-induced modification of deep hard rock and constructs a synergistic methodological system of characterization–modification–mining for hard rock ore bodies. An in-situ intelligent sensing method for mechanical properties and structural surface identification of deep rock is developed, enabling real-time and accurate characterization of ore-rock properties. The in-situ induced modification mechanism of deep hard rock ore bodies is explored, revealing the dual mechanism of high stress and high energy storage, and a mutation-regulation method is proposed to transform the disaster-causing energy of potential rockbursts into fracturing energy that promotes hard rock fragmentation. A mechanized crushing and intelligent control technology system is established, integrating intelligent sensing, real-time feedback, and adaptive control functions to achieve efficient and intelligent continuous fragmentation of deep hard rock. In addition, this paper systematically outlines the development directions of theory, technology, and equipment for non-explosive mechanized continuous mining of deep hard rock ore bodies, providing a useful reference for the transformation and upgrading of mining technologies for deep hard rock ore bodies.