Construction method for deeply-buried oil cylinder casing pipe of casting well

Abstract

The invention discloses a construction method for a deeply-buried oil cylinder casing pipe of a casting well. The construction method is based on an adjusting platform and a construction device whichare erected at the top of an open caisson and comprises the steps that 1, a design center is determined, a well is excavated with the design center as the center, and a protective cylinder is mountedin the mode of being attached to the inner wall of the well; 2, the bottom center of the well is determined through a plumb aligner with the design center as the starting point, a limiting ring is mounted with the bottom center as the center, and bottom sealing is conducted on the bottom of the protective cylinder manually through concrete; 3, after bottom sealing and curing of the concrete are conducted, the oil cylinder casing pipe is put down into the limiting ring through the construction equipment, and by adjusting a steel pipe jacking arranged between the upper end of the oil cylinder casing pipe and the well wall of the open caisson, the top face center of the oil cylinder casing pipe coincides with the design center, and the oil cylinder casing pipe is fixed; and 4, intermittent grouting is conducted between the oil cylinder casing pipe and the protective cylinder, and thus construction is completed. The construction method is suitable for mounting construction of the oil cylinder casing pipe with the high precision requirement, the mounting operation steps are simple, convenient and controllable, pointing is accurate, and the construction cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering installation, in particular to a construction method for deep-buried oil cylinder casings in casting wells. Background technique [0002] With the further optimization of the industrial structure of my country's aluminum industry, the aluminum alloy round ingot workshop has entered the model of refined production. The casting well is the core unit for the production of aluminum rods. The installation accuracy of the casting well oil cylinder directly affects the product quality of aluminum rods; the cylinder liner The pipe weighs several tons, and its bottom end is often buried in the soil more than ten meters below the ground. The depth of burial is deep, and the requirements for the position, elevation and verticality of the casing are high. The installation of oil cylinder casing has become a construction problem. [0003] The current method of installing oil cylinder casing in casting...

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Problems solved by technology

[0003] The current method of installing oil cylinder casing in casting wells is to lift the oil cylinder casing into the hole after drilling with a drilling rig, and then adjust the top plane position of the oil cylinder casing by relying on its own weight to be vertical. Inevitable inclination and rotation after the caisson, there is often a deviation between the position behind the caisson and the design position. If the hole is formed in advance, it may cause a large deviation between the center of the top surface of the cylinder liner and the center of the caisson axis, which cannot meet the use requirements; if the caisson is constructed After the completion, install the casing of the oil cylinder. Since the internal width of the caisson is only 2-3m, the existing drilling rig cannot meet the construction size requirements in terms of the volume of the installation hole for the casing of the oil cylinder in the caisson.

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