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Construction method for rapid water passage in vertical jacking pipe without underwater cutting

A construction method and technology of jacking pipes, which are applied in drainage, earthwork drilling, hydroelectric power generation, etc., can solve problems such as high risk factor, difficult construction safety, and long filling time, so as to simplify the construction process and reduce construction costs. Process, the effect of speeding up the construction

Active Publication Date: 2022-07-08
SHANGHAI FOUND ENG GRP
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Problems solved by technology

This method requires underwater fixed-point cutting by divers, and the construction safety is difficult, the risk factor is high, and it takes a long time for the entire tunnel to be filled with water

Method used

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  • Construction method for rapid water passage in vertical jacking pipe without underwater cutting

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Embodiment 1

[0018] refer to figure 1 , the construction method for fast water passage in vertical jacking pipe without underwater cutting proposed by the present invention comprises the following steps:

[0019] S1: Construction preparation, according to the structural drawings of the top cover plate of the vertical jacking, combined with the normal excavation of the shield tunnel and the use of the assembling equipment, select the position of the preset water hole;

[0020] S2: Determine the size and arrangement quantity of the water holes according to the selected positions of the water holes, and determine whether the force requirements during shield tunneling and vertical jacking are met according to the above review of the stress of the structure;

[0021] S3: After all the above are determined, when the shield vertical jacking segment is processed, the water hole opening, tapping, rust prevention treatment, etc. are completed. After the anti-rust, waterproof and lubricating treatme...

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Abstract

The invention relates to a construction method for fast water passage in a vertical jacking pipe without cutting under water. , select the position of the preset water hole; according to the selected position of the water hole, determine the size and arrangement number of the water hole, and determine whether it meets the requirements of the shield tunneling period, Requirements for force during vertical jacking; start construction, complete the water hole opening, tapping, and anti-rust treatment when the shield vertical jacking segment is processed, and cover the outer side of the cover plate with a hexagonal protruding bulky head; normal operation Tunnel construction and subsequent vertical jacking construction; finally, according to the requirements of water flow, the slightly protruding hexagonal bulkhead at the top cover plate of each vertical jacking pipe is removed to meet the needs of water flow inside the tunnel. The construction device of the invention simplifies the construction steps and procedures, speeds up the construction speed, and reduces the safety risk level.

Description

technical field [0001] The invention relates to a construction method for a vertical jacking pipe, in particular to a construction method for quickly passing water through the vertical jacking pipe without cutting underwater. Background technique [0002] The vertical jacking process is a water intake and drainage construction process innovatively invented by engineers and technicians in Shanghai in the 1970s and 1980s. In this process, a jacking port is reserved on the upper part of the horizontal tunnel that has been constructed, and the riser is jacked up section by section through the soil layer with hydraulic equipment. [0003] The application of vertical jacking technology in soft soil strata has the following features: ① Construction is less affected by natural conditions such as climate change, wind and waves, tides, etc.; ② Fast construction speed; ③ Low demand for marine machinery and equipment, which can avoid a lot of water excavation and lifting ; ④ The constr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F16/02
CPCE21F16/02Y02E10/20
Inventor 蔡树灿黄江川王鑫宋伟斌杨振业
Owner SHANGHAI FOUND ENG GRP
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