###### Abstract  
After entering deep mining, coal mines often experience various intense dynamic load phenomena due to increasingly complex geological conditions, which can lead to secondary disasters, where it is urgent to identify their sources and analyze their disaster-causing effects. This article takes the 3310 working face in Gu Cheng Coal Mine as the engineering background, and uses theoretical analysis, numerical simulation, on-site monitoring, and other methods to analyze the spatial and temporal distribution of dynamic load events during the mining period of this face. The study classifies dynamic load events based on this background into roof-type, fault-type, and coal pillar-type classes, revealing the differences in the spectra, waveforms, and disaster-causing effects of each class. The results show that the strong dynamic load events are mainly concentrated in the working face roof and fault zone areas. The first principal frequency of the three classes has an estimated boundary between 30 and 60 Hz. The waveform decay coefficients of the roof-type, coal pillar-type, and fault-type strong dynamic load events have average values of 4.53, 1.57, and 1.41, respectively. By adopting the above research methods, a theoretical basis can be provided for the source of dynamic loads, thereby achieving source-based prevention and control of rock burst. geomechanics; deep coal mining; secondary disaster; strong dynamic load; spectral characteristics; propagation properties; fast Fourier transform; numerical simulation 2020 IEEEexample: accepted  
strong dynamic load disasters induced by mining-induced seismicity. Therefore, it is crucial to study the characteristics of different types of dynamic loads and their mechanisms in triggering ground pressure impact. Mine seismic activity will trigger coal rock body decompression, and under specific conditions, it will induce mine dynamics disasters such as roofing, sheet ganging, bottom drumming, coal and gas protrusion, impact ground pressure, and so on. In this context, several studies have been conducted on mining earthquakes. [PERSON] et al. (2018) not only consider mining-induced seismicity as a response to local stress during mining but also classify it into three types: mining-induced fracturing type, massive overlying strata type, and high-energy mining-induced seismicity type. [PERSON] et al. (2018) classified mining-induced seismicity into three types: ground pressure impact-induced type, fault structure activation type, and roof movement type. In addition, the roof movement type was further divided into three classes: key layer fracture type, key layer rotation type, and key layer slip type. As for the research on the mechanisms of mining-induced seismicity, [PERSON] and [PERSON] (2018) calculated the source mechanism parameters and seismic source parameters, both processes involved in mining-induced seismicity. These parameters were determined by the seismic moment tensor inversion method and Sejsgram and Multilok seismological analysis software, respectively. [PERSON] et al. (2018) categorized micro-seismic signal characteristics into five types: mining-induced seismicity, blasting, coal rock fracture, percussion, and noise. The authors argue that mining-induced seismic events are related to the fracturing of hard rock layers above coal seams, characterized by high maximum amplitude and average amplitude, with energy generally not less than \(10^{5}\) J. As the working face advances, mine earthquakes primarily affect the far-field hard layers. In the early stage of coal mining, the frequency of earthquakes is significantly higher. After the mine earthquake goes into the higher hard strata, the frequency of strong mine earthquakes in lower layers decreases (2018).