ROADWAY OR TUNNEL SURROUNDING ROCK SHIELDING PROTECTION STRUCTURE AND METHOD

摘要

Disclosed in the present invention are a roadway or tunnel surrounding rock shielding protection structure and method. Under the action of ground pressure, a bare surrounding rock is formed after a roadway or tunnel is formed by tunneling. The present invention provides a multilayer combined shielding protection structure and method. A special shielding layer is constructed by spraying a special shielding material; a fine bamboo concrete layer is constructed by pouring fine bamboo concrete; and energy absorption controllers are provided to construct an energy absorption control layer and a bracket in a shape of Chinese character "亚" constructed by a steel pipe bracket is erected. The roadway or tunnel surrounding rock shielding protection structure constructed by a multilayer protection structure achieves a good supporting protection effect on the bare surrounding rock of the roadway or tunnel, can effectively shield the damage from impact stress waves, and achieves a remarkable toughness and energy absorption effect on impact energy. The energy absorption controllers and the bracket in the shape of Chinese character "亚" can further absorb residual energy to prevent the roadway or tunnel from being damaged by impact, so that the safety of the roadway or tunnel can be effectively protected.