Method for quickly judging construction quality of waterproof curtain

A technology of water-stop curtain and construction quality, which is applied in basic structure engineering, basic structure testing, construction and other directions, can solve problems such as affecting engineering construction efficiency, a large number of drilling projects, and a large amount of drilling time, saving drilling time and improving Effectiveness of construction efficiency, ensuring timeliness and accuracy

Inactive Publication Date: 2019-04-12
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the need for a large number of drilling projects and a large amount of drilling time when performing quality inspection on the water-stop curtain in the prior art, as well as the time for detecti...

Method used

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  • Method for quickly judging construction quality of waterproof curtain
  • Method for quickly judging construction quality of waterproof curtain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] combine figure 1 and figure 2 As shown, a method for quickly judging the construction quality of water-stop curtains includes the following steps:

[0032] Step 1. According to the construction drawings of engineering piles, drill each inner water level observation well 11 and corresponding outer water level observation well 12 at the inner and outer sides of the rectangular water-stop curtain pile 10 at equal intervals respectively; each inner water level observation The diameters of the well 11 and the outer water level observation well 12 are both 200mm, and the inner water level observation well 11 and the outer water level observation well 12 are all located below the confined water layer and less than the effective pile length of the water-stop curtain pile 10; each outer water level observation well The angle between 12 and the vertical direction is 0.4°; each inner water level observation well 11 needs to avoid the layout point of engineering piles in the draw...

Embodiment 2

[0038] The difference with embodiment 1 is:

[0039] Step 4. When the water level readings of the inner water level observation well 11 and the corresponding outer water level observation well 12 do not conform to the law of internal drop and external drop, and the water level difference is greater than 150mm, no marking is required, and the position is marked during subsequent accurate detection. The inner water level observation well 11 and the adjacent inner water level observation well 11 take the center point for accurate detection.

[0040] The method for quickly judging the construction quality of the water-stop curtain proposed by the present invention has strong adaptability to site conditions, is safe and reliable, saves a lot of construction time, investment in mechanical equipment and personnel, and reduces construction costs. By dividing the water-stop curtain into multiple partial ranges for detection, and providing a targeted detection range for subsequent accur...

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Abstract

The invention discloses a method for quickly judging the construction quality of a waterproof curtain, and belongs to the field of building construction. According to the method for quickly judging the construction quality of the waterproof curtain, inner water level observation wells and outer water level observation wells are drilled at equal intervals on the inner and outer sides of a water-stop curtain pile, the inner part of the waterproof curtain pile is cleaned, a pipeline is placed under the waterproof curtain pile, sand and gravel filter materials are put into the waterproof curtain pile for filtering, and finally backfilling and tamping are carried out on the outer part of the pipeline; the water level difference between the inner water level observation wells and the outer waterlevel observation wells is detected by performing constant flow pumping, whether the rule that the water level of each inner water level observation well and the water level of each outer water levelobservation well are simultaneously lowered and the water level difference is greater than 150mm is met or not is judged, if the rule is met, the water level observation well at the position is marked for subsequent accurate detection to perform key detection with expanded scope conveniently. If the rule is not met, only the inner water level observation wells and the adjacent inner water level observation wells and the central point need to be detected.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a method for quickly judging the construction quality of a water-stop curtain. Background technique [0002] The buried depth of building foundations is generally getting deeper and deeper, and the groundwater is becoming more and more abundant. In the underground space construction, the impact of the confined water layer on the foundation pit requires water blocking and drainage measures for the foundation pit, and water-stop curtains are usually set up to block water, thereby reducing the impact of the confined water layer on the foundation pit , and finally carry out precipitation operations inside the water-stop curtain enclosure structure. [0003] At present, the commonly used water-stop curtains are high-pressure rotary grouting piles. After the construction is completed, the integrity and permeability of the water-stop curtain piles need to be tested for ...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02D19/18
CPCE02D19/18E02D33/00
Inventor 冯耀宗
Owner CHINA MCC17 GRP
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