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Novel construction technology of waterproof curtain

A technology of water-stop curtain and construction technology, which is applied in the direction of infrastructure engineering, construction, etc., and can solve problems such as construction troubles, soil particles falling, and soil instability around foundation pits, etc., and achieve rapid construction results

Inactive Publication Date: 2014-05-21
BEIJING NO 4 MUNICIPAL CONSTR ENG
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  • Abstract
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Problems solved by technology

[0002] In the prior art, it is usually necessary to excavate a complete foundation pit before the water-stop curtain is formed. During the excavation process, the soil around the foundation pit is likely to be unstable, and the poured concrete is not firm.
[0003] When the foundation pit is excavated below the groundwater level, soil particles will usually fall from the edge of the foundation pit continuously, which will cause troubles to the construction and eventually affect the quality of the water-stop curtain pouring

Method used

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  • Novel construction technology of waterproof curtain

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Embodiment Construction

[0019] Please refer to the attached figure 1 Shown, the present invention is a kind of construction technique of novel water-stop curtain, and it comprises following process steps:

[0020] 1), measurement and positioning: use theodolite and level to measure the positioning, and confirm the position of the rotary nozzle hole after the second inspection, and mark the hole position;

[0021] 2), put the pilot hole drill in place according to the marked position and drill the hole, wherein the inclination of the drill hole must not be greater than 1.5%;

[0022] 3), after the drilling is completed, the hole is cleaned, and the pilot hole drilling machine is moved to the next hole position, and step 2) and step 3) are repeated;

[0023] 4), configure cement slurry, wherein, the material of described cement slurry is pure cement slurry, and cement adopts P.C.32.5 composite Portland cement; The water-cement ratio of cement slurry is 1.0, and the slurry density is 1.49kg / L; Its cons...

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Abstract

The invention relates to a novel construction technology of a waterproof curtain. The novel construction technology includes the following processing steps: (1) carrying out measurement positioning, (2) enabling a hole leading drilling machine to be in place according to the marked position to carry out hole drilling, (3) cleaning a hole after hole drilling is completed, moving the hole leading drilling machine to a next hole position, and repeating the step (2) and the step (3), (4) preparing cement paste, (5) inserting a high-pressure spraying pipe into the hole, meanwhile, starting an air compressor to supply air, and starting a high-pressure water pump to supply water, (6) carrying out high-pressure jet grouting operation: forming the waterproof curtain by pumping the cement paste, and enabling the high-pressure spraying pipe to be lifted in a rotary mode, (7) carrying out recharging to enable the hole to be filled with the paste, and (8) carrying out movement: moving the high-pressure spraying pipe to the next hole position, repeating the step (5), the step (6) and the step (7), and finally completing construction of the whole waterproof curtain. The novel construction technology of the waterproof curtain has the advantages of being rapid in construction, good in waterproof effect, capable of keeping a soil layer structure stable and the like.

Description

【Technical field】 [0001] The invention relates to a building construction method, in particular to a construction technique of a novel water-stop curtain. 【Background technique】 [0002] In the prior art, it is usually necessary to excavate a complete foundation pit before the water-stop curtain is formed. During the excavation, the soil around the foundation pit is likely to be unstable, and the poured concrete is not firm. [0003] When the foundation pit is excavated below the groundwater level, soil particles will usually fall from the edge of the foundation pit continuously, which will cause troubles to the construction and eventually affect the quality of the water-stop curtain pouring. [0004] Therefore, in order to solve the above-mentioned technical problems, it is really necessary to provide a construction technology of a novel waterproof curtain with an improved technology, so as to overcome the defects in the prior art. 【Content of invention】 [0005] In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18
Inventor 刘其铎陈希林姜雪强卢常亘郭彩霞史亚军史磊磊胡建军
Owner BEIJING NO 4 MUNICIPAL CONSTR ENG
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