Transportation construction method for in-tunnel pressure steel tube

Abstract

The invention discloses a transportation construction method for an in-tunnel pressure steel tube, and aims to provide a transportation construction method, capable of improving transportation efficiency, for the in-tunnel pressure steel tube. The transportation construction method comprises the following steps: (1) laying a transportation platform and a transportation rail and arranging a traction system; (3) mounting steel supporting legs and brake shoes; and (3) lifting and transporting the pressure steel tube. According to the transportation construction method, the transportation platform and the transportation rail are laid, the steel supporting legs and the brake shoes are mounted in the pressure steel tube, so that under action of traction force, the pressure steel tube slides on a rail with lubricating oil, and is transported to a to-be-mounted position. The transportation construction method solves the problems that large lifting machinery cannot be lifted in a tunnel and a transport vehicle cannot be used for transporting in the tunnel, so that the safety risks are reduced.

Description

technical field [0001] The invention relates to the technical field of hydropower station construction, in particular to a method for transporting and constructing penstock steel pipes in a cave. Background technique [0002] The water diversion system of the underground powerhouse of large, medium and small hydropower stations generally adopts a steel-lined structure. The construction passage is narrow and the steel lining itself is large in size and weight. General hoisting machinery and transportation machinery in the cave cannot be used for construction, and the construction period is long. [0003] With the existing construction method, before the excavation and support of the civil penstock hole, a large number of deep and strong anchor hooks must be specially arranged above the hole for lifting and position adjustment of the penstock during transportation. After completion, it will take a lot of labor and construction time to carry out the pull-out test of the anchor ...

AI Technical Summary

Problems solved by technology

[0002] The water diversion system of the underground powerhouse of large, medium and small hydropower stations generally adopts a steel-lined structure. The construction passage is narrow and the steel lining itself is large in size and weight. General hoisting machinery and transportation machinery in the cave cannot be used for construction, and the construction period is long

[0003] With the existing construction method, before the excavation and support of the civil penstock hole, a large number of deep and strong anchor hooks must be specially arranged above the hole for lifting and position adjustment of the penstock during transportation. After it is completed, it will take a lot of labor and construction time to carry out the pull-out test of the anchor hook to calculate the tensile force of the anchor hook, and there are certain safety hazards in the repeated use of the anchor hook

[0004] With the existing construction method, the penstock needs to be hoisted outside the tunnel using mechanical equipment, transported to the tunnel for unloading, and the unloading location is generally far away from the installation location, requiring manual secondary transportation. If it is not reinforced firmly, the pipe joint will turn over and roll under the condition of the hoist traction, posing a safety risk; the second transportation to the installation location requires a large adjustment work, which prolongs the construction period

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