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根据大断面机头硐室工程地质条件及其工程岩体力学分析，确定了围岩变形力学机制类型，提出了对策支护设计与过程支护步序，采用锚杆、锚索复合支护技术，在关键支护时段内恰到好处地及时地控制了围岩灾害性变形，收到了较好效果。
According to the engineering geological conditions of large section headstock chamber and the mechanical analysis of engineering rock mass, the mechanics mechanism of surrounding rock deformation was determined, and the countermeasures of support design and process support steps were put forward. Using bolt and anchor cable composite support technology During the period of key support, it just controlled the disaster deformation of surrounding rock in a timely manner and received good results.