Large -span roof waterproof layer impermeability test device

The utility model provides a large -span roof waterproof layer impermeability test device, includes that the bottom surveys layer (1), intermediate test layer (3) and top barosphere (6), flashing position, the structure that can simulate large -span roof waterproof layer pierce through with surface of the work such as seam crossing, the waterproof layer adopts and plans using identical waterproofmaterial, structure and the construction process of waterproof layer, more the correspond to reality requirement of engineering of messenger analogue test, passing through the force pump when experimental and pressurizeing in to sealed container, the least favorable operating condition of the pressure size simulation waterproof layer that steerable waterproof layer bore satisfies the impervious performance, the waterproof structure of inspection and the construction quality's that detect waterproof material engineering demand. 种大跨度屋面防水层抗渗试验装置，包括底部观测层(1)、中间试验层(3)和顶部气压层(6)，可模拟大跨度屋面防水层的泛水部位、结构穿透和接缝处等工作表面，防水层采用与拟应用防水层完全相同