Work

Research on precursory patterns and mechanisms of microseism and electromagnetic radiation during the evolution process of rock burst

Year: 2026

Type: article

Abstract: To address the frequent occurrence of rock burst in deep mining at Yuejin Coal Mine and the inaccuracy of traditional single-index early warning, this study integrates electromagnetic radiation (EMR), microseismic (MS) monitoring, and on-site observations to systematically analyze the precursors and mechanisms of rock burst in the 25,110 working face. The results show that EMR signals exhibit three temporal patterns: rise-then-fall (71.4% of events), continuous fall, and continuous rise. Spatially, EMR intensity in the damage zone increases significantly 1-2 days before a rock burst, and bursts mainly occur in areas 0-50 m or beyond 200 m from the working face. MS signals follow a consistent rise-then-fall pattern: energy and frequency increase 4-9 days before the burst, peak 1-5 days later, then decline, with the burst occurring 2-3 days after the decline begins. Based on the energy response and perturbation effect of EMR signals, three precursory mechanisms are identified: "rising (falling)", "∧" shaped, and "N" shaped, corresponding to different failure stages of coal-rock under loading. These findings provide theoretical support for precise, multi-parameter early warning of rock burst in coal mines.

Source: Scientific Reports

DOI: 10.1038/s41598-026-52096-4

Authors: Yafei Zhu, Kai Yang, Xuelong Li, Bingxiao Jiang, Liming Qiu

Institutions: Shandong University of Science and Technology, Luliang University, University of Science and Technology Beijing

Language: English

Topic: Rock Mechanics and Modeling

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funders: National Natural Science Foundation of China, Natural Science Foundation of Shandong Province