Mounting and construction method of U-shaped tunnel pipelines

A technology of pipeline installation and construction method, applied in the direction of pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve the problems of high safety hazard, difficult to guarantee installation quality, long construction period, etc., to improve work efficiency and reduce The effect of working time and shortening construction period

CN101813214BActive Publication Date: 2011-09-07中石化石油工程技术服务有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-09-07

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Abstract

The invention discloses a mounting and construction method of U-shaped tunnel pipelines. The method comprises the following steps of: mounting pipelines of a left inclined shaft section firstly and meanwhile, carrying out pipeline transportation and distribution of a level section; after the pipeline transportation and distribution of the level section is finished, mounting pipelines of a right inclined shaft section; and finally, connecting the heads on the level section to run through, wherein the pipeline mounting of the inclined shaft sections comprises the following steps of: laying a light rail through the whole course at the bottom of the tunnel; then embedding a ground anchor, fixing a winding machine and beginning to excavate a working pit; mounting a hoop and a sled on a pipeline; connecting a pulley block with the ground anchor, the pipeline, the loop and the winding machine; ensuring that the pipeline downwards slides along the light rail through the sled until the upper port of the pipeline arrives at the working pit; then continuing to mount another pipeline; and repeating in such a way until the inclined shaft pipelines and the level pipelines are butt jointed. In the construction method, the operations of welding, flaw detecting and joint repairing aiming at the inclined shaft pipelines are all finished outside the port of the tunnel, thereby avoiding the construction in the tunnel, improving the construction safety, reducing the labor intensity and being beneficial to improving the welding quality, shortening the construction period and saving the construction cost.
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Description

technical field

[0001] The invention relates to an installation and construction method of a large-diameter pipeline, in particular to a U-shaped tunnel pipeline installation and construction method with a long inclined shaft section. Background technique

[0002] At present, for the installation of pipelines in U-shaped tunnels, the construction method of installing them from bottom to top is usually adopted in the tunnel. Disadvantages: (1) The construction personnel will install the pipeline in the tunnel throughout the whole process, which has a great potential safety hazard. Once there is poor ventilation, foreign objects or landslides, safety accidents will occur. The construction safety problems of the bare tunnel section and the initial branch section are particularly prominent. ; (2) The humidity in the tunnel is relatively high, which greatly affects the quality of welding and patching; (3) Due to space constraints in the tunnel, mechanical equipment cannot be used...

Examples

Embodiment Construction

[0012] The U-shaped tunnel includes left inclined shaft section, level road section and right inclined shaft section. like figure 1 , figure 2 As shown in the figure, the U-shaped tunnel pipeline installation and construction method of the present invention includes the following steps: firstly, the pipeline installation of the left-inclined well section is carried out, and at the same time, the pipeline transportation and distribution of the roadway section is carried out. The pipelines in the right inclined well section are installed and finally connected at the level road section.

[0013] The pipeline installation steps of the inclined shaft section are as follows: (1) Lay a light rail at the bottom of the tunnel inclined shaft 4 as a guide device for the pipeline to slide down; (2) bury a ground anchor 1 capable of carrying the pipeline slide load in front of the tunnel mouth 4a, and at the bottom of the tunnel 4a. Fix the hoist in a proper position; (3) excavate the w...