## 1 Introduction  
In the process of deep mining development, the deformation control of the roadway surrounding rock is a major technical difficulty. Particularly with the increase in mining depth, various obvious large deformation phenomena occur in the roadway peripheral rock under high levels of stress, and the roadway produces serious bottom plate bulging under high levels of stress, which affects the normal use of the roadway. Under high overburden and tectonic stresses, the roadway may collapse or undergo excessive deformation, which not only endangers mining personnel but also reduces the function of the roadway and stops production. Therefore, ensuring the stability of the roadway perimeter rock and the safety and reliability of the support structure during deep excavation is extremely important for the safe and efficient mining of underground resources [1, 2, 3, 4, 5, 6, 7, 8].  
Deep mining is in a high-stress state, so the surrounding rock is more likely to reach the limit state, which leads to deformation and damage. In terms of surrounding rock control, scholars have proposed various theories and techniques, ranging from the new Austrian tunneling method [9] to the collapse arch [10; 11]. Scholars have proposed the idea of surrounding rock management from the perspective of improving the bearing capacity of surrounding rock and combining it with support. With the development of energy theory [12], the interaction between surrounding rock and support was studied from the perspective of energy regulation. [PERSON], [PERSON] et al. [13; 14] proposed the joint support theory according to the engineering practice. [PERSON] et al. [15] proposed a resin full-length prestressed anchorage joint support technology. [PERSON] et al. [16] considered that high geostress is an important factor leading to the deformation of deep surrounding rock, analyzed the damage mechanism of soft rock, and proposed a support method applicable to soft rock.  
However, most of the existing studies on perimeter rock support are aimed at shallow roads. Influenced by traditional concepts, deep roadway support always adopts the engineering analogy method and empirical method, which leads to the uncertainty of rationality and excessive or insufficient support intensity of the surrounding rock control methods and technical parameters. The disadvantage of the former is that it wastes the support material and increases the support cost, while the latter brings great hidden danger to safety production.  
Based on the above, in view of the mining characteristics of the middle zone of Makeng Iron Ore Mine, the distribution law of geostress, the deformation and damage characteristics of the deep roadway, and the peripheral rock support characteristics of the roadway, this study determines the reasonable support process and support design parameters through on-site measurements, theoretical analyses, numerical simulations, and on-site industrial tests and develops the support effect checking inspection standards to meet the specification requirements, so as to form a set of mine-based actual support control methods of the crushed rock body. This study is a reference for the support technology of this kind of broken rock body.