###### Abstract  
To address the stress-structural failure phenomenon that can be induced by the excavation of a left-side tunnel section of a 610 m crushing station, an unmanned aerial vehicle was used in this study to collect the geological conditions and rock mass information of the working face, and important geometric information such as the attitude and spacing of rock mass were extracted. Based on the identified attitude and spacing information, a three-dimensional rock mass structure and numerical simulation model of the 610 m crushing station left-side tunnel section were constructed using discrete element numerical simulation software (3 DEC) (version 5.0). The results show that the surrounding rock instability of the left-side tunnel section of the 610 m crushing station is controlled by both the stress field in the contact zone between reddish-brown granite stratum and the gray-black-gray genesis stratum. The cause of stress-structural failure is that the joint sets (SSet #2 and JSet #3) are most likely to form unfavorable blocks with the excavation surface due to unloading triggered by the excavation. Therefore, stress-structural failure disasters in jointed strata sections are one of the key issues for surrounding rock stability during crushing station excavation. It is suggested to adopt 'optimized excavation parameters + combined support forms' to systematically control stress-structural failure after unloading due to the excavation from three levels: surface, shallow, and deep. The stress-structural failure mechanism of deep rock mass is generally applicable to a large extent, so the results of this research have reference value for engineering projects facing similar problems around the world. J 2020 2  
tunnel section of the 610 m crushing station can provide theoretical guidance and technical support for deep mining in Jinchuan II mine. Stress-structure failure, which refers to the sudden and unpredictable instability and collapse of a rock mass, is an important issue in deep-rock mechanics and mining theory, as well as one of the technical challenges in deep mining operations [6; 7; 8]. To date, domestic and foreign scholars have conducted extensive theoretical analyses, numerical simulations, experimental studies, and on-site monitoring regarding this issue, achieving notable results [9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22]. For example, [PERSON] et al. [10] established a stress analysis model for deep hard rock deposits and analyzed the influence of different factors on stress distribution. [PERSON] [13] investigated the damage mechanism and instability of surrounding rock under deep high-stress conditions, and proposed a surrounding rock stability evaluation method based on damage variables. [PERSON] et al. [16] discussed the critical technologies and countermeasures for backfill mining in high-stress ore bodies in large nickel mines and provided reasonable support measures and parameters. [PERSON] et al. [17] investigated stress-structure failure during the excavation process of the underground powerhouse of Baihetan hydropower station and found that tensile fracturing is the most active rock mass fracture mechanism in the evolution of stress-structure failure. [PERSON] et al. [19] found that the Hoek-Brown brittleness parameter can be used to estimate the depth of brittle failure around a tunnel, supporting demand load caused by stress-structure-induced failure. [PERSON] et al. [21] found that when propagating cracks intersect existing joint sets, stress-structure rock bursts are considered structural failures and analyzed using a catastrophic model. However, there are still three research gaps concerning stress-structural failure induced by deep mining: (1) the lack of in-depth analysis and systematic summarization for specific mining areas or deposit conditions; (2) insufficient consideration of complex situations and nonlinear effects resulting from the comprehensive effects of multiple factors; (3) the lack of targeted prevention and control measures and suggestions.