The invention discloses a TBM double-track tunnel trackless transportation cross-line bypassing
cushion layer
rapid construction method, and belongs to the technical field of
tunnel construction. According to the method, a construction area is divided into a plurality of construction sections in the longitudinal direction of a tunnel, construction and transport vehicle framing and side alternate operation is organized, and parallel
cushion layer pouring and trackless transport are achieved; the method comprises the following steps of: performing
radar detection and scabbling treatment on the top surface of an inverted arch block during construction preparation; installing a steel plate
water stop belt, and penetrating through the ground beam and the drainage blind
pipe; a detachable steel
pipe is adopted for shaping and constructing a
cushion drainage ditch; after a reinforcing mesh is laid, concrete pouring, multi-pass
surface finishing, steam and heat preservation curing and temperature and
humidity monitoring are conducted; by optimizing the construction organization and technology, the problems that transportation is interrupted, the construction period is long and
cracking is prone to occurring in a traditional method are solved, efficient, high-quality and low-interference cushion layer construction is achieved, optimal construction parameters can be scientifically screened by setting a contrast test section, and adaptability is high.