Tunnel structure with hoop heat preservation rubble french drain

The utility model discloses a be applicable to the tunnel structure with hoop heat preservation rubble french drain in cold and severe cold area, to the tunnel that has set up the heat preservation between preliminary bracing and the moulded lining, take directly to increase the mode of hoop heat preservation rubble french drain. To the tunnel that does not set up the heat preservation between preliminary bracing and the moulded lining, take to permeate water the blind pipe at the hoop and be close to the polyurethane insulation board that the 2m width was add to the moulded lining side, for strengthening drainage effect, increase the mode of hoop heat preservation rubble french drain simultaneously. The utility model discloses tunnel structure with hoop heat preservation rubble french drain fully considers the construction difficulty that the cutting of traditional tunnel hoop heat preservation blind pipe buried deeply, adopts not cutting, sets up the construction process of heat preservation, convenient construction, and the antifreezing property is good, and the drainage scheme is equitable, and the investment increases lessly, and solution cold that can be fine and severe cold area moulded lining be frozen swelling problem behind one's back, guarantees that the tunnel builds up drainage, the decompression at back lining cutting back, and guarantee tunnel drainage is unblocked, and application prospect is wide.