Experimental Study on Anti-Explosion Performance of the Different Types of Structures in Rock under the Condition of Plane Charge Explosion Loading

In this paper, the straight-wall-arch structure in rock medium is taken as research object, and high-pressure plane charge loading test technology adopted to study anti-explosion performance of different types structures under explosion loading. Three structures, which are individually built with high-performance reinforced concrete, C30 concrete a foam backfill layer well, tested, dynamic responses damage characteristics these investigated. The results show that condition same loading, vault section appears through-tensile crack largest transverse relative displacement between two straight walls, composite only shows an intermittent at arch foot, represents slight mode. Meanwhile spring suffers through-compression shear failure vertical floor, moderate Therefore, adopting layer, can effectively decrease degree structures. Compared improve resistance by improving structural strength strengthening its capacity absorb waves energy dissipation, significantly reduce lateral free surface peak stress inner layer. be excellent property.