Method for correcting offset of base

A basic and deviation correction technology, applied in the field of basic deviation correction, to achieve the effect of easy implementation, simple structure and processing method, and large practical scope

Inactive Publication Date: 2009-09-30
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is a method of using jacking and high-pressure rotary spraying to deal with the deviation of large-scale equipment foundations caused by uneven subsidence of the foundation.

Method used

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  • Method for correcting offset of base
  • Method for correcting offset of base

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Experimental program
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Embodiment

[0010] Embodiment: in the direction of large-scale equipment foundation 1 offset, according to the calculation (load value: equipment and foundation self-weight), determine the number of required drilling 2, and at the same time excavate the foundation trench 6 at the same direction as the position of the drilling hole 2, the foundation trench 6 After the excavation is completed, the soil layer at the bottom of the foundation trench 6 is compacted, leveled with fine stone concrete, the thickness of the leveling layer is 150mm, and the steel plate 5 is laid on the top of the leveling layer. When ready, insert the section steel 3 at the drill hole 2, use the jack 4 to support the other end of the section steel 3 and start jacking up to the normal elevation of the large-scale equipment foundation 1. When the large equipment foundation 1 is adjusted in place, see figure 2 , on both sides of the large-scale equipment foundation 1, use single-pipe high-pressure rotary grouting equi...

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Abstract

The invention provides a method for correcting the offset of a base, which comprises the following steps: firstly, drilling a hole (2) along an offset direction of the base (1), at the same time, digging a below base groove (6) near the base (1) and additionally padding a steel plate (5) after the bottom of the base groove (6) is tamped and leveled; secondly, inserting a profiled bar (3) in the drill hole (2) and jacking up the profiled bar (3) so as to ensure that the offset base (1) is jacked up to a normal standard height; thirdly, injecting slurry into a foundation for reinforcing and then removing a jacking device; and finally, infilling the drill hole (2) of the base (1) with high-grade fine gravel concrete without contraction. Under the condition that large equipment does not need to be moved, the method can correct the offset of the base of the large equipment and has simple structure and processing method, easy implementation and larger practical range.

Description

technical field [0001] The invention relates to a basic deviation correction method. Background technique [0002] In industrial buildings such as electrolytic aluminum plants, alumina plants, and sponge titanium plants, there are a large number of large-scale equipment foundations. Due to the influence of bad geology, uneven foundation settlement often occurs during equipment installation or production and use, causing foundation The offset has a great impact on the installation of equipment and production, and some even directly cause production stoppage. The commonly used method is to remove the equipment or lift the equipment, use the method of adding concrete pads or steel pads to correct it, and then move the equipment back to install. Using this method, the first part of the shutdown will be caused. Second, standby equipment needs to be activated, which requires a long processing period and inevitably causes certain damage to the equipment. Especially in high collap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D35/00E02D3/12E02D27/44
Inventor 刘建军吴长华刘芸
Owner GUIYANG AL-MG DESIGN & RES INST
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