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Blast furnace slag replacement method for high-fill steel slag foundation

A blast furnace slag, high fill technology, applied in fill, soil protection, infrastructure engineering and other directions, can solve the problem of uneven floor, affecting the safety of equipment use, etc., to solve the lateral pressure and horizontal thermal expansion, reduce The direct cost of the project and the effect of speeding up the construction period

Active Publication Date: 2012-06-27
PANGANG GRP ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Steel slag itself has a certain degree of expansibility and decomposition, and the infiltration of ground rainwater and production and domestic water will also cause further hydration of the slag body. The increase in temperature will easily vaporize the water in the slag body and transfer heat to a larger Spatial transmission increases the temperature of the slag body and causes thermal expansion of the slag body, resulting in uneven floor of the existing vanadium nitride workshop, which affects the safety of equipment

Method used

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  • Blast furnace slag replacement method for high-fill steel slag foundation
  • Blast furnace slag replacement method for high-fill steel slag foundation

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Embodiment Construction

[0017] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0018] The invention is mainly used to solve the problem of thermal expansion caused by the temperature rise of steel slag. After the factory building is completed, the temperature of the furnace placed in it is generally 200 degrees. While blast furnace slag is produced at a temperature of 1400-1600 degrees during blast furnace smelting, it has reached the upper limit of expansion. It produces thermal expansion and can completely solve a series of problems caused by the heat transfer of slag. Therefore, the present invention selects the combination of blast furnace slag and sandstone for replacement.

[0019] figure 1 It is a cross-sectional schematic diagram of the blast furnace slag replacement foundation. Such as figure 1 As shown, the replacement foundation includes a first blast furnace slag cushion layer 1 , a graded sandston...

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Abstract

The invention discloses a blast furnace slag replacement method for high-fill steel slag foundation, which comprises the following steps of: superimposing a first blast furnace slag cushion layer (1), a graded gravel cushion layer (2) and a second blast furnace slag cushion layer (3) sequentially from bottom to top in a steel slag foundation pit, respectively compacting the first blast furnace slag cushion layer, the graded gravel cushion layer and the second blast furnace slag cushion layer, setting up a through groove around the first blast furnace slag cushion layer, the graded gravel cushion layer and the second blast furnace slag cushion layer, and filling blast furnace slag into the groove. By adopting the blast furnace slag replacement method, the problem of thermal expansion of the high-fill steel slag foundation can be solved. The invention has the advantages that the method can be easily mastered and has practicality, the quality requirements can be satisfied, the construction period can be shortened, and the construction cost can be reduced. Therefore, the method has good promotion prospects.

Description

technical field [0001] The invention relates to a foundation replacement method, in particular to a blast furnace slag replacement method for high-fill steel slag foundations. Background technique [0002] In the construction project where the metallurgical furnace is installed above, foundation construction is a key link. Taking the construction of a vanadium nitride workshop in a steel factory as an example, the basic geological conditions of the original building of the vanadium nitride workshop are spoil yards, and the lower part is a high-fill steel slag foundation with a depth of 20m. According to the analysis of the engineering geological environment where the proposed project is located, after the plant is completed and put into use in the future, the temperature of the steel slag body will increase and thermal expansion will occur. There are two main reasons for this: ①The heat conduction of the higher temperature of the furnace above the ground; ② Heat accumulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D17/18
Inventor 段炼江泽平周旭刘俊何小龙李兵何君
Owner PANGANG GRP ENG TECH
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