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Plugging drainage device for dewatering well and construction method

A construction method and technology for drainage devices, which are applied in infrastructure engineering, construction, etc., can solve the problems of complex plugging procedures for dewatering wells, difficult to guarantee construction quality, and increase construction costs, so as to reduce groundwater seepage, save construction efficiency, The effect of strengthening the compressive capacity

Pending Publication Date: 2022-07-05
CHINA CONSTR EIGHTH ENG DIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For construction projects with a high groundwater level, the number of dewatering wells is not only large, but the water level of a single dewatering well is relatively high. For construction projects with a large number and high water level at the construction site, the plugging process of the dewatering well is complicated and lasts for a long time. , the amount of rework will be large, the construction quality will be difficult to guarantee, the construction period will be delayed, and the construction cost will be increased.

Method used

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  • Plugging drainage device for dewatering well and construction method
  • Plugging drainage device for dewatering well and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The embodiment of the present invention discloses a construction method for plugging drainage of a dewatering well, comprising the following construction steps:

[0043] Step 1: Backfill in the dewatering well and extract excess groundwater;

[0044] Step 2: Install the plugging sleeve 1 on the top of the dewatering well, and the plugging sleeve 1 is connected and fixed with the pouring belt through the water stop ring 11;

[0045] Step 3: install the first plugging steel plate 3 in the installed plugging sleeve 1, and continuously pump water into the dewatering well by the pumping pump 2 during the process of installing the first plugging steel plate 3;

[0046] Step 4: After installing the first plugging steel plate 3, remove the water pump 2, pour concrete in the upper area of ​​the first plugging steel plate 3, and install the second plugging steel plate 4 on the top of the plugging sleeve 1;

[0047] Step 5: Check the air tightness of the bottom of the dewatering ...

Embodiment 2

[0049] On the basis of Example 1, increase:

[0050] The backfilling layer of the step 1 includes two layers, from bottom to top, the sandstone backfilling layer and the concrete pouring layer are respectively.

[0051] When installing the first sealing steel plate 3 in step 3, adjust the position and angle of the first sealing steel plate 3 through the adjusting rod 31 on the first sealing steel plate 3, and connect the first sealing steel plate 3 to the sealing steel plate 3 by spot welding. The plug sleeve 1 is connected and fixed.

[0052] In step 3, when the water pump 2 is continuously pumping water in the dewatering well, the air pressure inside and outside the dewatering well is balanced by opening the exhaust pipe 32 on the first blocking steel plate 3 .

[0053] After the first blocking steel plate 3 is installed in step 4, the tightness between the first blocking steel plate 3 and the blocking sleeve 1 is tested first.

[0054] In step 4, concrete is poured in the...

Embodiment 3

[0056] This embodiment provides a drainage well plugging and drainage device, refer to figure 1 and 2, including a plugging sleeve 1, which is characterized in that: a first plugging steel plate 3 is horizontally arranged in the plugging sleeve 1, a water stop ring 11 is arranged on the outer side of the plugging sleeve 1, and the A plugging steel plate 3 blocks the interior of the plugging sleeve 1 into a sealing area at the bottom and a filling area at the top. The sealing area is connected to the suction pump 2 through a water suction pipe 21, and the water suction pipe 21 is controlled by a water discharge valve 22 to open and block, An adjusting rod 31 is provided on the first blocking steel plate 3 .

[0057] The first blocking steel plate 3 is provided with an exhaust pipe 32 , and the exhaust pipe 32 is controlled by a vent valve 33 to open and resist.

[0058] A filter screen 23 is provided at one end of the water suction pipe 21 close to the sealing area.

[0059]...

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Abstract

The invention relates to the technical field of dewatering construction, in particular to a dewatering well plugging drainage device and a construction method. The construction method comprises the following construction steps that backfilling is conducted in the precipitation well, redundant underground water is pumped, a plugging sleeve is installed at the top of the precipitation well, the plugging sleeve is fixedly connected with a pouring belt through a water stop ring, and a first plugging steel plate is installed in the plugging sleeve; in the process of installing the first plugging steel plate, water is continuously pumped in the dewatering well through a water pump, the water pump is removed, concrete is poured in the upper side area of the first plugging steel plate, a second plugging steel plate is installed at the top of the plugging sleeve, and the airtightness of plugging of the bottom of the dewatering well is detected. According to the construction method, plane operation is changed into three-dimensional operation, the problems of urgent surge in the precipitation well plugging process and underground water leakage in the later period are reduced, the quality of the plugged precipitation well is improved, and it can be guaranteed that engineering construction is completed on schedule during various emergency construction periods and basement three-dimensional operation.

Description

technical field [0001] The invention relates to the technical field of dewatering construction, in particular to a dewatering well plugging drainage device and a construction method. Background technique [0002] At present, in the process of building construction, high-rise buildings are becoming more and more popular. With the birth of high-rise buildings, deep foundation pits and high water level precipitation operations are important steps in building foundation construction, which ensures the stability of building foundations and is a key factor in building construction safety. important part. [0003] For construction projects with high groundwater level, the number of dewatering wells is not only large, but also the water level of a single dewatering well is relatively high. Therefore, the plugging process of dewatering wells is cautious. For foundation pit dewatering construction, large-diameter dewatering wells are used. , For construction projects with a large num...

Claims

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Application Information

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IPC IPC(8): E02D19/06E02D19/12E02D19/16E02D19/10
CPCE02D19/06E02D19/12E02D19/16E02D19/10E02D2300/002E02D2300/0029
Inventor 杨珂珂张金山闫磊马子栋祁军志刁伟王重
Owner CHINA CONSTR EIGHTH ENG DIV
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