Integral casting process for reinforced concrete wastewater tank in predrilling engineering

A technology of reinforced concrete and monolithic pouring, which is applied in the direction of construction, building structure, and building material processing. It can solve the problems of affecting structural strength and durability, many stepped construction sections, and easy-to-distort formwork, and achieves easy construction time. Control and ensure the pouring size of the structure and enhance the effect of out-of-plane rigidity

Active Publication Date: 2013-04-03
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

This technology also has the following problems in practical application: The operation sections are short, there are many vertical layers, and there are many step-shaped construction sections. The construction time of stubble is not easy to control, and construction joints are prone to appear, which affects the impermeability of the pool; In this method, "the first layer starts from the bottom of the pool, pour the inner and outer bottoms of the construction section to the design elevation and vibrate until the slurry no longer flows, and then pour the second layer (that is, the pool wall)", the vibration time of the first layer If it is too long, it is easy to cause concrete segregation, cement and stone separation, sand to sink to the bottom and cement to be fully vibrated to the top, resulting in uneven and dense concrete structure, affecting structural strength and durability; The steel formwork is used and iron parts are not allowed to penetrate the pool wall, and the supporting steel bars in the formwork have no place to take root, so it is difficult to fix and the formwork is easy to skew

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  • Integral casting process for reinforced concrete wastewater tank in predrilling engineering
  • Integral casting process for reinforced concrete wastewater tank in predrilling engineering

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Embodiment 1

[0038] An integral pouring process for reinforced concrete wastewater pools in pre-drilling engineering, comprising the following steps:

[0039] a. Foundation and cushion construction: Excavate the foundation pit, confirm that the bearing capacity of the foundation meets the design requirements, and pour the concrete cushion;

[0040] b. Manufacture and installation of steel bars: For production and installation on site, the overlapping length of steel bars should not be less than 40 times the diameter (mm) of steel bars, and the overlapping area of ​​steel bars of the same section should not exceed 50% of the total area;

[0041] c. Formwork support: Bind the formwork into the shape of the concrete pool bottom and pool wall;

[0042] d. Concrete pouring: After completing the construction of steel bars and formwork, carry out concrete pouring construction. First pour the concrete at the bottom of the pool and the wall of the pool below 1m. The top of the pool wall is level an...

Embodiment 2

[0053] The invention first carries out the construction of the cushion layer of the wastewater pool, and then manufactures and installs steel bars for the pool bottom and the pool wall, forms and pours them.

[0054] The specific construction sequence is: measurement and setting-out, foundation and cushion construction → measurement and setting-out, bottom plate and pool wall (including water stop sheet) installation → supporting formwork → pouring waste water pool bottom plate and pool wall concrete with a height below 1.0m → at the After the initial setting of the first pouring concrete, immediately pour the rest of the pool wall concrete→remove the formwork→cure.

[0055] The second part of concrete pouring is generally carried out about 1 hour after the first pouring is completed, that is, before the final setting of the first part of concrete. The bottom of the pool and the wall of the pool are formed at one time. The time interval between the two parts of concrete pourin...

Embodiment 3

[0064] This embodiment is mainly to describe in detail the wooden formwork system and supporting formwork in the present invention.

[0065] The wooden formwork 1 is provided with a tie hole 3, and the double tension screw 5 with the water stop sheet 4 passes through the tie hole 3 through the wood formwork on one side of the wall 2, the wall 2 and the other side of the wall 2 in turn. The wooden formwork is fixed on the steel pipe.

[0066] The process of setting up the formwork is as follows:

[0067] Wood formwork construction is carried out in two steps. The first is the vertical formwork. At this time, attention should be paid to the position and fixation of the wooden formwork to ensure the structural size and the protective thickness of the concrete. In order to enhance the out-of-plane rigidity of the wooden formwork, prevent the thickness of the concrete wall from being deformed and meet the higher anti-seepage requirements, the wooden formwork on both sides of the ...

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Abstract

The invention discloses an integral casting process for a reinforced concrete wastewater tank in predrilling engineering. The integral casting process comprises the following steps of a, construction of a foundation and a bedding layer, digging a foundation pit, and casting the concrete bedding layer after determining that the foundation bearing force meets the design requirements; b, manufacturing and installation of reinforced bars, manufacturing and installing on site, wherein the overlapping length of the reinforced bars should not be less than 40 times of the diameter (mm) of each reinforced bar, and the overlapping area of the reinforced bars same in cross section should not be more than 50% of the total area; c, supporting of die plates, binding the die plates into the shapes of the bottom and the wall of a concrete tank; d, casting of concrete, after completing the construction of the reinforced bars and the die plates, carrying out the casting construction of concrete, firstly casting the bottom of the concrete tank and the wall with the height less than 1m, leveling the top of the wall of the concrete tank, and reserving no step to complete the first time of casing; casting the residual wall of the concrete tank in at least one hour after completing the first time of casting; and e, removal of the die plates, removing the die plates when the strength of the cast concrete being more than 1.2MPa. The integral casting process has the advantages that the construction time of the wastewater tank in the predrilling engineering is reduced, the construction period of the whole predrilling engineering is shortened, the condition of drilling machines not waiting for well fields is ensured, the construction seams are not reserved in the construction, and the leakage problem caused by the construction seams is avoided.

Description

technical field [0001] The invention relates to an integral pouring process for a pre-drilling engineering reinforced concrete wastewater pool, and belongs to the technical field of construction of a pre-drilling engineering wastewater pool. Background technique [0002] The pre-drilling project is an essential and important link in oil exploration and mining. The wastewater pool is an important facility for storing, treating, and purifying wastewater generated during oil exploration and mining operations. During the construction of the pre-drilling project and the use of drilling operations appear to be very important. [0003] In the existing pre-drilling projects, most of the wastewater pools are designed in two forms: stone masonry and reinforced concrete pouring. In recent years, with the continuous improvement of environmental protection requirements, more stringent control has been adopted on strip mining operations that damage the ecology. Many places have completel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/02
Inventor 王遂泸龚成周洲刘颖
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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